results
WASP-39 b



Total Reductions to Date: 46
Date Processed: 05/06/2025 at 07:00:04 (PDT)
Exoplanet Watch Ephemeris
Parameter | Value | Uncertainty |
---|---|---|
Orbital Period (Days) | 4.0552803396189585 | 8.425897317058824e-08 |
Ephemeris (BJD_TDB) | 2460460.7333167554 | 1.6271322871317133e-05 |
Assumed Priors
Parameter | Value | Uncertainty | Units | Reference |
---|---|---|---|---|
RA | 217.3266477 | decimal | ||
DEC | -3.4444994 | decimal | ||
Host Star Metallicity | -0.03 | 0.1 | Panek et al. 2023 | |
Host Star log(g) | 4.38933 | 0.089088 | Log10(cgs) | Panek et al. 2023 |
Host Star Radius [R_Sun] | 1.01342 | 0.071232 | Sol | Panek et al. 2023 |
Host Star Effective Temperature [K] | 5326.6 | 154.53 | K | Panek et al. 2023 |
a/Rs | 11.39 | 0.012 | Carter et al. 2024 | |
eccentricity | 0.0 | Carter et al. 2024 | ||
inclination [degrees] | 87.7369 | 0.0024 | deg | Carter et al. 2024 |
omega [degrees] | 0.0 | deg | Ricci et al. 2015 | |
orbital period [days] | 4.0552842 | 3.5e-06 | day | Carter et al. 2024 |
Rp | 15.24 | 0.45 | R_Earth | Panek et al. 2023 |
Rp/Rs | 0.1522 | 0 | ExoFOP-TESS TOI | |
ephemeris [JD] | 2459783.5015 | 6.8e-06 | BJD-TDB | Carter et al. 2024 |
Previously Published Mid-Transit Times
Value | Uncertainty | Units | Reference |
---|---|---|---|
2455342.9695471167 | 0.00031316666666666667 | BJD-TDB, HJD | Mancini et al. 2018, Bonomo et al. 2017, Fischer et al. 2016, Maciejewski et al. 2016, Ricci et al. 2015, Faedi et al. 2011 |
2456401.39763 | 0.00013 | BJD-TDB | Ivshina & Winn 2022 |
2456888.031364 | 8e-05 | BJD-TDB | Kokori et al. 2023 |
2459694.285977 | 0.00080364 | BJD | ExoFOP-TESS TOI |
2459783.5015 | 6.8e-06 | BJD-TDB | Carter et al. 2024 |
Observations

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.316 | 0.011 |
Am2 | -0.146 | 0.019 |
a/Rs | 11.373 | 0.034 |
Rp/Rs | 0.163 | 0.041 |
ephemeris [JD] | 2455630.8927 | 0.0091 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6121094645093361 | |
u1 | -2.7550882993056804 | |
u2 | 3.392450127315308 | |
u3 | -1.2494712419675174 | |
duration | 0.1217 | 0.005 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | TABC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0822 | 0.0084 |
Am2 | -0.057 | 0.081 |
a/Rs | 11.449 | 0.034 |
Rp/Rs | 0.174 | 0.026 |
ephemeris [JD] | 2455634.9454 | 0.0026 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6111721874481335 | |
u1 | -2.753455857646958 | |
u2 | 3.391254810827485 | |
u3 | -1.2489710900950262 | |
duration | 0.1223 | 0.0031 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | OPAA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.985 | 0.013 |
Am2 | 0.0114 | 0.0028 |
a/Rs | 11.333 | 0.035 |
Rp/Rs | 0.136 | 0.011 |
ephemeris [JD] | 2455703.8855 | 0.0062 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6117669045944067 | |
u1 | -2.754270725846383 | |
u2 | 3.3917688852389967 | |
u3 | -1.2492650134457253 | |
duration | 0.1191 | 0.0016 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MJOU (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.504 | 0.082 |
Am2 | -0.218 | 0.071 |
a/Rs | 11.385 | 0.034 |
Rp/Rs | 0.055 | 0.088 |
ephemeris [JD] | 2455764.699 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6114574672532367 | |
u1 | -2.7536651691455916 | |
u2 | 3.3910735272862755 | |
u3 | -1.2488657748629874 | |
duration | 0.0521 | 0.0057 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | TRIC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9745 | 0.0098 |
Am2 | 0.0173 | 0.0038 |
a/Rs | 11.385 | 0.035 |
Rp/Rs | 0.159 | 0.015 |
ephemeris [JD] | 2455991.7979 | 0.0051 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6123717226155705 | |
u1 | -2.755249218822094 | |
u2 | 3.392220864910689 | |
u3 | -1.2493433181561353 | |
duration | 0.0931 | 0.0051 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | HTAB (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.016 | 0.01 |
Am2 | -0.013 | 0.016 |
a/Rs | 11.332 | 0.035 |
Rp/Rs | 0.169 | 0.012 |
ephemeris [JD] | 2455999.9279 | 0.0023 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.610343962199927 | |
u1 | -2.751483211290577 | |
u2 | 3.3893526842982644 | |
u3 | -1.2482133847023236 | |
duration | 0.1234 | 0.0016 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | DEDC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.068 | 0.014 |
Am2 | -0.053 | 0.044 |
a/Rs | 11.348 | 0.034 |
Rp/Rs | 0.133 | 0.026 |
ephemeris [JD] | 2456056.716 | 0.0054 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6119022616290444 | |
u1 | -2.754683109028831 | |
u2 | 3.3921679345626363 | |
u3 | -1.2493870366156083 | |
duration | 0.0851 | 0.0056 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | WGAC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.931 | 0.012 |
Am2 | 0.052 | 0.016 |
a/Rs | 11.333 | 0.035 |
Rp/Rs | 0.155 | 0.011 |
ephemeris [JD] | 2456060.7557 | 0.0024 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6118807652310556 | |
u1 | -2.7545937129656726 | |
u2 | 3.3917850429013714 | |
u3 | -1.249072044625219 | |
duration | 0.1215 | 0.0014 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | DJSA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.597 | 0.02 |
Am2 | -0.298 | 0.035 |
a/Rs | 11.402 | 0.035 |
Rp/Rs | 0.176 | 0.057 |
ephemeris [JD] | 2456064.802 | 0.01 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6112088411958114 | |
u1 | -2.752735828607387 | |
u2 | 3.3901549890332765 | |
u3 | -1.2486279511044551 | |
duration | 0.123 | 0.007 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | SDAU (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.995 | 0.014 |
Am2 | 0.0029 | 0.0023 |
a/Rs | 11.334 | 0.035 |
Rp/Rs | 0.174 | 0.01 |
ephemeris [JD] | 2456068.8531 | 0.0027 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6122541850815761 | |
u1 | -2.7554017262007298 | |
u2 | 3.392785616230426 | |
u3 | -1.2496380245548266 | |
duration | 0.124 | 0.0013 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | FBIA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.013 | 0.015 |
Am2 | -0.0098 | 0.0058 |
a/Rs | 11.332 | 0.034 |
Rp/Rs | 0.132 | 0.026 |
ephemeris [JD] | 2456360.8412 | 0.0076 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6099581181668035 | |
u1 | -2.751226502183606 | |
u2 | 3.3894997552010206 | |
u3 | -1.248231320676736 | |
duration | 0.1186 | 0.0033 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | SPIC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.211 | 0.017 |
Am2 | -0.127 | 0.016 |
a/Rs | 11.363 | 0.035 |
Rp/Rs | 0.158 | 0.025 |
ephemeris [JD] | 2456364.9073 | 0.0083 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6117607015499402 | |
u1 | -2.754539803928052 | |
u2 | 3.3922380549415854 | |
u3 | -1.2494589020151876 | |
duration | 0.1216 | 0.0031 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | KPRB (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.906 | 0.018 |
Am2 | 0.074 | 0.029 |
a/Rs | 11.431 | 0.035 |
Rp/Rs | 0.139 | 0.023 |
ephemeris [JD] | 2456429.7923 | 0.0073 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6119101487429808 | |
u1 | -2.7545223681587263 | |
u2 | 3.39202304753839 | |
u3 | -1.2494107775775625 | |
duration | 0.1182 | 0.0028 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | LIGA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.02 | 0.014 |
Am2 | -0.0092 | 0.0034 |
a/Rs | 11.447 | 0.035 |
Rp/Rs | 0.142 | 0.013 |
ephemeris [JD] | 2456433.8358 | 0.0036 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6122381332539117 | |
u1 | -2.754961171014357 | |
u2 | 3.3919025966985377 | |
u3 | -1.2491795083948047 | |
duration | 0.1186 | 0.0017 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | GBRG (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.12 | 0.68 |
Am2 | -0.002 | 0.055 |
a/Rs | 11.345 | 0.034 |
Rp/Rs | 0.001 | 0.086 |
ephemeris [JD] | 2456498.707 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.611494347643681 | |
u1 | -2.7542592418630854 | |
u2 | 3.39207901550198 | |
u3 | -1.2493140707366597 | |
duration | 0.1079 | 0.0067 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MRAE (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.208 | 0.037 |
Am2 | -0.154 | 0.042 |
a/Rs | 11.349 | 0.035 |
Rp/Rs | 0.216 | 0.039 |
ephemeris [JD] | 2456790.681 | 0.011 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.611196107474279 | |
u1 | -2.752597776035551 | |
u2 | 3.390031178039779 | |
u3 | -1.248629458963106 | |
duration | 0.108 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | DJSA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.37 | 0.58 |
Am2 | -0.36 | 0.46 |
a/Rs | 11.34 | 0.035 |
Rp/Rs | 0.304 | 0.073 |
ephemeris [JD] | 2456794.7778 | 0.0074 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6112887843640318 | |
u1 | -2.7533080211448526 | |
u2 | 3.390664165144573 | |
u3 | -1.2486448778389185 | |
duration | 0.1395 | 0.0087 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | DTEC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.075 | 0.018 |
Am2 | -0.051 | 0.014 |
a/Rs | 11.338 | 0.034 |
Rp/Rs | 0.168 | 0.013 |
ephemeris [JD] | 2457163.7946 | 0.0036 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6107058257221023 | |
u1 | -2.7525156839334515 | |
u2 | 3.390303696890526 | |
u3 | -1.2484937881597147 | |
duration | 0.1231 | 0.0017 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | SMAMA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0052 | 0.01 |
Am2 | -0.0032 | 0.0019 |
a/Rs | 11.333 | 0.034 |
Rp/Rs | 0.1206 | 0.0097 |
ephemeris [JD] | 2457459.8326 | 0.0032 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.610411713652898 | |
u1 | -2.7516087514177023 | |
u2 | 3.3891687987463155 | |
u3 | -1.2479717104789603 | |
duration | 0.1173 | 0.0013 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | SGDA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.981 | 0.015 |
Am2 | 0.0111 | 0.0023 |
a/Rs | 11.445 | 0.035 |
Rp/Rs | 0.162 | 0.0096 |
ephemeris [JD] | 2457463.8837 | 0.0032 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6116382252068782 | |
u1 | -2.753857280521013 | |
u2 | 3.391316360350127 | |
u3 | -1.2490972545014403 | |
duration | 0.121 | 0.0013 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | HSHA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.989 | 0.012 |
Am2 | 0.0094 | 0.0098 |
a/Rs | 11.449 | 0.035 |
Rp/Rs | 0.128 | 0.012 |
ephemeris [JD] | 2457467.9542 | 0.0027 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6107753238367026 | |
u1 | -2.7521307662887295 | |
u2 | 3.3896203185907168 | |
u3 | -1.2482648256294109 | |
duration | 0.1037 | 0.0029 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MJOU (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 2.71 | 1.35 |
Am2 | -0.7 | 0.22 |
a/Rs | 11.394 | 0.035 |
Rp/Rs | 0.003 | 0.082 |
ephemeris [JD] | 2457528.784 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6106896291640238 | |
u1 | -2.7522707411640814 | |
u2 | 3.3898984644812047 | |
u3 | -1.2483173019677238 | |
duration | 0.1084 | 0.0062 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MSPA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.962 | 0.015 |
Am2 | 0.026 | 0.015 |
a/Rs | 11.333 | 0.035 |
Rp/Rs | 0.073 | 0.03 |
ephemeris [JD] | 2457832.9013 | 0.0099 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6115498106354909 | |
u1 | -2.753590718253584 | |
u2 | 3.3909949285919403 | |
u3 | -1.2489539704440853 | |
duration | 0.1113 | 0.004 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | ZLNA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.276 | 0.013 |
Am2 | -0.176 | 0.041 |
a/Rs | 11.336 | 0.035 |
Rp/Rs | 0.169 | 0.015 |
ephemeris [JD] | 2457893.7404 | 0.0029 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6112236252137941 | |
u1 | -2.753200022106695 | |
u2 | 3.3908684327429253 | |
u3 | -1.2488919853221478 | |
duration | 0.1229 | 0.0019 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | SPIC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.173 | 0.016 |
Am2 | -0.114 | 0.019 |
a/Rs | 11.448 | 0.035 |
Rp/Rs | 0.12 | 0.021 |
ephemeris [JD] | 2458258.7156 | 0.0068 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6111383794707754 | |
u1 | -2.752661766345179 | |
u2 | 3.3897488284217956 | |
u3 | -1.2482253910361982 | |
duration | 0.1157 | 0.0026 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | CJOB (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.136 | 0.014 |
Am2 | 0.004 | 0.017 |
a/Rs | 11.398 | 0.034 |
Rp/Rs | 0.127 | 0.014 |
ephemeris [JD] | 2458262.7714 | 0.0041 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.8995176570661758 | |
u1 | -3.3476702630570405 | |
u2 | 3.823826075262837 | |
u3 | -1.3756734122925232 | |
duration | 0.1173 | 0.0018 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | FMAA (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.153 | 0.015 |
Am2 | -0.003 | 0.027 |
a/Rs | 11.447 | 0.035 |
Rp/Rs | 0.141 | 0.018 |
ephemeris [JD] | 2458627.7415 | 0.0034 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.8998398230383207 | |
u1 | -3.347845248196404 | |
u2 | 3.8235382713585158 | |
u3 | -1.3755327892252724 | |
duration | 0.1184 | 0.0023 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | FMAA (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.98 | 0.028 |
Am2 | 0.0049 | 0.0049 |
a/Rs | 11.336 | 0.035 |
Rp/Rs | 0.177 | 0.017 |
ephemeris [JD] | 2458635.8475 | 0.0081 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6120357005061832 | |
u1 | -2.7550111801929633 | |
u2 | 3.3926024720024626 | |
u3 | -1.2496269417619663 | |
duration | 0.1241 | 0.0022 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | PMLA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.1619 | 0.0096 |
Am2 | -0.026 | 0.015 |
a/Rs | 11.331 | 0.035 |
Rp/Rs | 0.1727 | 0.0072 |
ephemeris [JD] | 2458992.7232 | 0.0017 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.8996807877354607 | |
u1 | -3.3480873487965535 | |
u2 | 3.824047559641346 | |
u3 | -1.3756409415975037 | |
duration | 0.12376 | 0.00098 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | FMAA (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9508 | 0.0089 |
Am2 | 0.0378 | 0.0085 |
a/Rs | 11.449 | 0.034 |
Rp/Rs | 0.1527 | 0.0071 |
ephemeris [JD] | 2458996.7779 | 0.0023 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6098097952201817 | |
u1 | -2.750674063031716 | |
u2 | 3.388964311568479 | |
u3 | -1.2480999932574415 | |
duration | 0.11992 | 0.001 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | FSAF (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.45 | 0.2 |
Am2 | 0.74 | 0.23 |
a/Rs | 11.434 | 0.034 |
Rp/Rs | 0.303 | 0.086 |
ephemeris [JD] | 2459000.818 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6116839957598097 | |
u1 | -2.75409157121037 | |
u2 | 3.391415136802033 | |
u3 | -1.2490075108154493 | |
duration | 0.138 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | HDOD (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0037 | 0.0091 |
Am2 | -0.0028 | 0.0046 |
a/Rs | 11.333 | 0.034 |
Rp/Rs | 0.1482 | 0.0072 |
ephemeris [JD] | 2459296.8674 | 0.0024 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6106764742326394 | |
u1 | -2.7521026644154327 | |
u2 | 3.3897747713781534 | |
u3 | -1.24834853068378 | |
duration | 0.1208 | 0.001 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | EGRA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.4 | 0.17 |
Am2 | -0.21 | 0.33 |
a/Rs | 11.444 | 0.034 |
Rp/Rs | 0.298 | 0.084 |
ephemeris [JD] | 2459361.74 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6106371844183958 | |
u1 | -2.7516572241604287 | |
u2 | 3.3891987940632116 | |
u3 | -1.2481787038181809 | |
duration | 0.137 | 0.01 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | GJAM (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.009 | 0.027 |
Am2 | -0.0046 | 0.0091 |
a/Rs | 11.333 | 0.034 |
Rp/Rs | 0.225 | 0.014 |
ephemeris [JD] | 2459661.8545 | 0.0028 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.611970573923418 | |
u1 | -2.7546767241731316 | |
u2 | 3.392124612210327 | |
u3 | -1.2494184114140179 | |
duration | 0.1301 | 0.0018 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | CELD (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.95 | 0.014 |
Am2 | 0.033 | 0.028 |
a/Rs | 11.361 | 0.034 |
Rp/Rs | 0.181 | 0.014 |
ephemeris [JD] | 2459665.8989 | 0.0023 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.610777855906858 | |
u1 | -2.7525101797863103 | |
u2 | 3.3903973141913326 | |
u3 | -1.2486649397910234 | |
duration | 0.1245 | 0.0017 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MJAT (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.971 | 0.014 |
Am2 | 0.021 | 0.015 |
a/Rs | 11.334 | 0.034 |
Rp/Rs | 0.137 | 0.014 |
ephemeris [JD] | 2459669.9727 | 0.0062 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6115733058007606 | |
u1 | -2.753936366982082 | |
u2 | 3.391353374105573 | |
u3 | -1.2489902623891482 | |
duration | 0.1169 | 0.0047 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | ETFA (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.304 | 0.011 |
Am2 | -0.136 | 0.022 |
a/Rs | 11.446 | 0.034 |
Rp/Rs | 0.164 | 0.05 |
ephemeris [JD] | 2459730.7837 | 0.0081 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.612123762987012 | |
u1 | -2.7554338180402613 | |
u2 | 3.392854619765004 | |
u3 | -1.2495445141542811 | |
duration | 0.117 | 0.0067 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | CVIH (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9749 | 0.0088 |
Am2 | 0.0163 | 0.0071 |
a/Rs | 11.337 | 0.034 |
Rp/Rs | 0.1636 | 0.0069 |
ephemeris [JD] | 2460030.8722 | 0.0018 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6108445276689318 | |
u1 | -2.75218489829198 | |
u2 | 3.389588739384587 | |
u3 | -1.2482483182527306 | |
duration | 0.12263 | 0.00096 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | PAIB (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.25582 | 0.00099 |
Am2 | 1.0 | 0.49 |
a/Rs | 11.441 | 0.035 |
Rp/Rs | 0.218 | 0.088 |
ephemeris [JD] | 2460095.753 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.9001160964477557 | |
u1 | -3.3492621969393457 | |
u2 | 3.8256783824241816 | |
u3 | -1.3765322249255414 | |
duration | 0.129 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | MObs CV | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | TKVA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.973 | 0.016 |
Am2 | 0.018 | 0.028 |
a/Rs | 11.434 | 0.035 |
Rp/Rs | 0.151 | 0.021 |
ephemeris [JD] | 2460095.7677 | 0.0086 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.9006084878279481 | |
u1 | -3.3499209328041624 | |
u2 | 3.8258869946737373 | |
u3 | -1.3765744926873644 | |
duration | 0.1198 | 0.0027 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | MObs CV | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | KMUA (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.014 | 0.013 |
Am2 | 0.006 | 0.01 |
a/Rs | 11.334 | 0.034 |
Rp/Rs | 0.151 | 0.017 |
ephemeris [JD] | 2460099.8182 | 0.0039 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.899000538573074 | |
u1 | -3.3462915602016063 | |
u2 | 3.822243385437326 | |
u3 | -1.3749523068529284 | |
duration | 0.1168 | 0.0032 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | MObs CV | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | OAS (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.872 | 0.038 |
Am2 | 0.104 | 0.038 |
a/Rs | 11.332 | 0.034 |
Rp/Rs | 0.077 | 0.047 |
ephemeris [JD] | 2460395.859 | 0.012 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.6119127249145428 | |
u1 | -2.754297406171006 | |
u2 | 3.3914187644355342 | |
u3 | -1.2490340326429932 | |
duration | 0.1118 | 0.0055 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
V | Johnson V | 502.8 nm | 586.8 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MMCC (collaborate/publish) | MOBS |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9907 | 0.0042 |
Am2 | 0.0044 | 0.0018 |
a/Rs | 11.44 | 0.034 |
Rp/Rs | 0.1474 | 0.0058 |
ephemeris [JD] | 2460460.73 | 0.0018 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 1.8998031352456481 | |
u1 | -3.348053619633886 | |
u2 | 3.824086128806595 | |
u3 | -1.3758355874350334 | |
duration | 0.11921 | 0.00082 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | AAMF (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0013 | 0.0026 |
Am2 | 0 | |
a/Rs | 11.33 | 0.034 |
Rp/Rs | 0.1444 | 0.0023 |
ephemeris [JD] | 2459706.45025 | 0.00088 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 2.5103877341515224 | |
u1 | -4.411565050867529 | |
u2 | 4.439779485042786 | |
u3 | -1.538602102168909 | |
duration | 0.12012 | 0.00054 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0013 | 0.0024 |
Am2 | 0 | |
a/Rs | 11.333 | 0.034 |
Rp/Rs | 0.1445 | 0.0024 |
ephemeris [JD] | 2459714.56058 | 0.00094 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 2.5096387100557553 | |
u1 | -4.409381807119963 | |
u2 | 4.437507802737709 | |
u3 | -1.5377646395494828 | |
duration | 0.12012 | 0.00056 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0003 | 0.0024 |
Am2 | 0 | |
a/Rs | 11.445 | 0.034 |
Rp/Rs | 0.1439 | 0.0022 |
ephemeris [JD] | 2459702.39603 | 0.00091 |
eccentricity | 0.0 | |
inclination [degrees] | 87.7369 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0552842 | |
u0 | 2.5104974150566277 | |
u1 | -4.411744993593434 | |
u2 | 4.439926367455617 | |
u3 | -1.5386787227587528 | |
duration | 0.11878 | 0.00055 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |