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XO-1 b

View target in exoplanet catalog
Timing Plot
Global Light Curve
Lomb-Scargle Periodogram

Total Reductions to Date: 23

Date Processed: 09/24/2023 at 00:07:22 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.9415045131242636 1.2341935673515964e-07
Ephemeris (BJD_TDB) 2459717.233183133 0.00012655673456843245
Time saved (hours) 0.0041  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 240.5492745 decimal
DEC 28.1696248 decimal
Host Star Metallicity 0.02 0.08 Patel & Espinoza 2022
Host Star log(g) 4.51 0.02 Log10(cgs) Patel & Espinoza 2022
Host Star Radius [R_Sun] 0.88 0.05 Sol Patel & Espinoza 2022
Host Star Effective Temperature [K] 5750.0 75.0 K Patel & Espinoza 2022
a/Rs 11.04 0.28 Patel & Espinoza 2022
eccentricity 0.019 Bonomo et al. 2017
inclination [degrees] 88.81 0.7 deg Bonomo et al. 2017
omega [degrees] 0.0 deg Patel & Espinoza 2022
orbital period [days] 3.941516 2.3e-05 day Patel & Espinoza 2022
Rp 13.83 0.59 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.146 0 ExoFOP-TESS TOI
ephemeris [JD] 2458968.34713 0.00014 BJD Patel & Espinoza 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2453150.6849 0.0018 HJD Wilson et al. 2006
2453808.9169566664 0.00044 HJD Caceres et al. 2009, Raetz et al. 2009, McCullough et al. 2006
2453887.7474233336 0.00020333333333333336 BJD-TDB, BJD-TT, HJD Bonomo et al. 2017, Burke et al. 2010, Holman et al. 2006
2455385.51978 5e-05 BJD-TDB Kokori et al. 2022
2456055.57566 0.00016 BJD-TDB Ivshina & Winn 2022
2458968.34713 0.00014 BJD Patel & Espinoza 2022
2459713.291648 0.000309 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0002425
Parameter Value Uncertainty
Am1 0.52 0.17
Am2 0.359 0.07
a/Rs 10.55 0.81
Rp/Rs 0.291 0.087
ephemeris [JD] 2458191.889 0.012
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 1.7597255865966623
u1 -3.0935926797155724
u2 3.752788169643492
u3 -1.4189210206036802
duration 0.152 0.015
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 GMAJ (collaborate/publish) MOBS
Light curve chart for 0001668
Parameter Value Uncertainty
Am1 1.148 0.014
Am2 -0.06 0.028
a/Rs 9.75 0.8
Rp/Rs 0.228 0.045
ephemeris [JD] 2458187.9359 0.0053
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026152264009993
u1 -3.7095460742716817
u2 4.261829104604889
u3 -1.5784352308369973
duration 0.0651 0.008
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001670
Parameter Value Uncertainty
Am1 1.061 0.011
Am2 -0.0081 0.0091
a/Rs 10.21 0.79
Rp/Rs 0.192 0.055
ephemeris [JD] 2458195.8137 0.008
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.0268755712274875
u1 -3.711494408203338
u2 4.26420246362135
u3 -1.5795835631039314
duration 0.0918 0.0041
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001671
Parameter Value Uncertainty
Am1 1.0167 0.0057
Am2 -0.013 0.012
a/Rs 11.98 0.74
Rp/Rs 0.126 0.012
ephemeris [JD] 2458258.8805 0.0039
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026209244077654
u1 -3.709194539769511
u2 4.261335022695507
u3 -1.5783496635048095
duration 0.1145 0.0078
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001674
Parameter Value Uncertainty
Am1 1.0265 0.0073
Am2 -0.025 0.026
a/Rs 10.26 0.8
Rp/Rs 0.144 0.058
ephemeris [JD] 2458262.8146 0.0079
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.0262677682692303
u1 -3.7092778071698245
u2 4.2613544444477345
u3 -1.5783443420480108
duration 0 0
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001665
Parameter Value Uncertainty
Am1 1.0231 0.0056
Am2 -0.006 0.019
a/Rs 10.81 0.81
Rp/Rs 0.116 0.051
ephemeris [JD] 2458270.704 0.011
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026593832273546
u1 -3.710468266348706
u2 4.262830772812043
u3 -1.5789562752157553
duration 0.0694 0.0044
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0004249
Parameter Value Uncertainty
Am1 1.1224 0.0074
Am2 -0.113 0.036
a/Rs 9.64 0.4
Rp/Rs 0.1447 0.0065
ephemeris [JD] 2458597.8376 0.0051
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 1.7599917524554374
u1 -3.0941374177791263
u2 3.753534974838045
u3 -1.4193892535823265
duration 0.1332 0.0062
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 SJEH (collaborate/publish) MOBS
Light curve chart for 0001675
Parameter Value Uncertainty
Am1 1.0591 0.0083
Am2 -0.034 0.018
a/Rs 11.62 0.69
Rp/Rs 0.194 0.019
ephemeris [JD] 2458601.7882 0.0029
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026155956832689
u1 -3.709383923533963
u2 4.261594960394549
u3 -1.5783669301905618
duration 0.1118 0.005
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0002563
Parameter Value Uncertainty
Am1 0.9848 0.0043
Am2 0.0127 0.0019
a/Rs 11.47 0.24
Rp/Rs 0.1343 0.0029
ephemeris [JD] 2458932.8737 0.0011
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 1.7596868783204214
u1 -3.0934589936727748
u2 3.752717719146204
u3 -1.4189455478739994
duration 0.1217 0.0028
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 RDUA (collaborate/publish) MOBS
Light curve chart for 0004018
Parameter Value Uncertainty
Am1 1.029 0.011
Am2 -0.024 0.044
a/Rs 10.58 0.54
Rp/Rs 0.148 0.015
ephemeris [JD] 2459007.759 0.0025
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026320975552734
u1 -3.7095695889842575
u2 4.261748174148609
u3 -1.5784994972120896
duration 0.1343 0.0071
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 YNEA (collaborate/publish) MOBS
Light curve chart for 0000597
Parameter Value Uncertainty
Am1 1.1465 0.0069
Am2 -0.1307 0.0096
a/Rs 10.65 0.54
Rp/Rs 0.1247 0.0086
ephemeris [JD] 2459271.8388 0.0036
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.0264556478170594
u1 -3.7103170027976278
u2 4.262786869617918
u3 -1.5789254511168758
duration 0.1299 0.007
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 SGEO (collaborate/publish)
Light curve chart for 0001667
Parameter Value Uncertainty
Am1 1.2921 0.0081
Am2 -0.155 0.037
a/Rs 12.15 0.8
Rp/Rs 0.082 0.069
ephemeris [JD] 2459342.812 0.012
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.0261135552172567
u1 -3.709907452880487
u2 4.262297471259987
u3 -1.578503510083574
duration 0 0
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001669
Parameter Value Uncertainty
Am1 0.7844 0.0084
Am2 0.24 0.15
a/Rs 12.4 0.79
Rp/Rs 0.186 0.022
ephemeris [JD] 2459409.7856 0.005
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.026037422028231
u1 -3.7091646614983453
u2 4.261209456162069
u3 -1.5780821531949853
duration 0.0636 0.0067
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 BTSB (collaborate/publish) MOBS
Light curve chart for 0001353
Parameter Value Uncertainty
Am1 1.0 0.0052
Am2 -0.0004 0.0017
a/Rs 11.6 0.32
Rp/Rs 0.1314 0.0047
ephemeris [JD] 2459677.8205 0.0014
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.208469185448212
u1 -3.8875561705108366
u2 4.2050750283761795
u3 -1.525987980653054
duration 0.1195 0.0036
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
NA Custom 615.0 nm 690.0 nm
Organization Observer Code Secondary Observers
AAVSO LDJC (collaborate/publish)
Light curve chart for 0001355
Parameter Value Uncertainty
Am1 1.0 0.0019
Am2 0.0005 0.0048
a/Rs 11.25 0.31
Rp/Rs 0.1302 0.0036
ephemeris [JD] 2459677.8182 0.0017
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.0817055978847776
u1 -3.652952494533812
u2 4.0627389247233285
u3 -1.491491967534766
duration 0.1233 0.0036
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
SR Sloan r 553.1 nm 693.1 nm
Organization Observer Code Secondary Observers
AAVSO HHJA (collaborate/publish)
Light curve chart for 39aedbe1c828e74fc65e8702f4593c4c
Parameter Value Uncertainty
Am1 0.9997 0.0015
Am2 0
a/Rs 11.24 0.18
Rp/Rs 0.1283 0.002
ephemeris [JD] 2458960.4644 0.00084
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.6881771007290007
u1 -4.896602900977836
u2 4.953432614877809
u3 -1.7450067408170762
duration 0.1235 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 11457a58d3188600aaa5dd408055f2d7
Parameter Value Uncertainty
Am1 0.9994 0.0016
Am2 0
a/Rs 11.21 0.21
Rp/Rs 0.1287 0.0024
ephemeris [JD] 2458972.28909 0.00096
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.6886769684214986
u1 -4.897997758228341
u2 4.955023979129428
u3 -1.7457031154869753
duration 0.1241 0.0024
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for c178dcf5b5bea800eb41b97d887a160e
Parameter Value Uncertainty
Am1 0.9998 0.0015
Am2 0
a/Rs 11.34 0.17
Rp/Rs 0.1298 0.002
ephemeris [JD] 2458980.17177 0.00081
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.688636514149595
u1 -4.898214454105764
u2 4.955504955172121
u3 -1.7459269413731744
duration 0.1226 0.0019
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for a1eb3a12bd16f13e645e9b198cac72dc
Parameter Value Uncertainty
Am1 1.0 0.0014
Am2 0
a/Rs 11.27 0.18
Rp/Rs 0.1295 0.002
ephemeris [JD] 2458976.22992 0.00084
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.6894757507347085
u1 -4.899982074604301
u2 4.957143342406218
u3 -1.7466369446694343
duration 0.1235 0.002
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 8c35a4ea060c15b6c2ad3402ae00a2f1
Parameter Value Uncertainty
Am1 1.0016 0.0014
Am2 0
a/Rs 11.22 0.19
Rp/Rs 0.1281 0.002
ephemeris [JD] 2459713.29185 0.00088
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.688427076862214
u1 -4.896979966201083
u2 4.953715334669593
u3 -1.7451623715146138
duration 0.1235 0.0022
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for a2178667aeb030218351610d0da54037
Parameter Value Uncertainty
Am1 0.9997 0.0014
Am2 0
a/Rs 11.24 0.18
Rp/Rs 0.1297 0.002
ephemeris [JD] 2459701.46738 0.00083
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.6882917145265997
u1 -4.896488102482173
u2 4.953105627456507
u3 -1.7449091656939086
duration 0.1239 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for c8b9000255dc65006c3efecaee88f281
Parameter Value Uncertainty
Am1 0.9994 0.0014
Am2 0
a/Rs 11.26 0.18
Rp/Rs 0.1289 0.002
ephemeris [JD] 2459717.23316 0.00081
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.688537272805288
u1 -4.897062175039345
u2 4.953666213163174
u3 -1.7451412371137387
duration 0.1235 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 599b6a0003067db42c2c1e13f8f22876
Parameter Value Uncertainty
Am1 0.9999 0.0019
Am2 0
a/Rs 11.47 0.19
Rp/Rs 0.1312 0.0021
ephemeris [JD] 2458964.40615 0.00087
eccentricity 0.019
inclination [degrees] 88.81
omega [degrees] 0.0
orbital period [days] 3.941516
u0 2.688235802978014
u1 -4.896991008117848
u2 4.953984098990694
u3 -1.7452288200307442
duration 0.1213 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)

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