results
WASP-31 b
Total Reductions to Date: 3
Date Processed: 12/03/2023 at 00:07:36 (PST)
Exoplanet Watch Ephemeris
| Parameter | Value | Uncertainty |
|---|---|---|
| Orbital Period (Days) | 3.405887656886167 | 2.2993719117592722e-07 |
| Ephemeris (BJD_TDB) | 2460066.51423373 | 0.00026179142229445997 |
| Time saved (hours) | 0.0016 |
Assumed Priors
| Parameter | Value | Uncertainty | Units | Reference |
|---|---|---|---|---|
| RA | 169.4388603 | decimal | ||
| DEC | -19.0547781 | decimal | ||
| Host Star Metallicity | -0.2 | 0.09 | Bonomo et al. 2017 | |
| Host Star log(g) | 4.31 | 0.07 | Log10(cgs) | ExoFOP-TESS TOI |
| Host Star Radius [R_Sun] | 1.25 | 0.03 | Sol | Patel & Espinoza 2022 |
| Host Star Effective Temperature [K] | 6302.0 | 102.0 | K | Patel & Espinoza 2022 |
| a/Rs | 8.16 | 0.24 | Patel & Espinoza 2022 | |
| eccentricity | 0.047 | Bonomo et al. 2017 | ||
| inclination [degrees] | 84.41 | 0.22 | deg | Bonomo et al. 2017 |
| omega [degrees] | 0.0 | deg | Patel & Espinoza 2022 | |
| orbital period [days] | 3.4059095 | 4.7e-06 | day | Patel & Espinoza 2022 |
| Rp | 16.88 | 0.75 | R_Earth | ExoFOP-TESS TOI |
| Rp/Rs | 0.1288 | 0 | ExoFOP-TESS TOI | |
| ephemeris [JD] | 2458554.30005 | 0.00026 | BJD | Patel & Espinoza 2022 |
Previously Published Mid-Transit Times
| Value | Uncertainty | Units | Reference |
|---|---|---|---|
| 2458554.30005 | 0.00026 | BJD | Patel & Espinoza 2022 |
| 2456371.12617 | 0.00014 | BJD-TDB | Ivshina & Winn 2022 |
| 2456183.80208 | 0.0002 | BJD-TDB | Kokori et al. 2022 |
| 2459303.595258 | 0.000307 | BJD | ExoFOP-TESS TOI |
| 2455873.86662 | 0.00011 | BJD-TDB | Bonomo et al. 2017 |
| 2455192.6887 | 0.0003 | HJD | Anderson et al. 2011 |
Observations
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.056 | 0.017 |
| Am2 | -0.0199 | 0.0063 |
| a/Rs | 7.69 | 0.47 |
| Rp/Rs | 0.159 | 0.022 |
| ephemeris [JD] | 2460001.807 | 0.0052 |
| eccentricity | 0.047 | |
| inclination [degrees] | 84.41 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.4059095 | |
| u0 | 2.126133805067968 | |
| u1 | -3.803811047348316 | |
| u2 | 4.263325216087627 | |
| u3 | -1.5856479102787828 | |
| duration | 0.126 | 0.014 |
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 | FMAA (collaborate/publish) | MOBS |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.42 | 0.013 |
| Am2 | -0.146 | 0.019 |
| a/Rs | 7.31 | 0.71 |
| Rp/Rs | 0.155 | 0.068 |
| ephemeris [JD] | 2460001.807 | 0.012 |
| eccentricity | 0.047 | |
| inclination [degrees] | 84.41 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.4059095 | |
| u0 | 2.1257960975789745 | |
| u1 | -3.802541367368322 | |
| u2 | 4.261725420946548 | |
| u3 | -1.5849800876525428 | |
| duration | 0.135 | 0.022 |
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 | KMUA (collaborate/publish) | MOBS |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.0354 | 0.0033 |
| Am2 | -0.033 | 0.014 |
| a/Rs | 8.13 | 0.14 |
| Rp/Rs | 0.1308 | 0.0042 |
| ephemeris [JD] | 2460066.5192 | 0.002 |
| eccentricity | 0.047 | |
| inclination [degrees] | 84.41 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.4059095 | |
| u0 | 2.524839401836154 | |
| u1 | -4.465882549309922 | |
| u2 | 4.554084512659571 | |
| u3 | -1.6130412973246568 | |
| duration | 0.1083 | 0.0034 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| RJ | Johnson R | 590.0 nm | 810.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | PNIF (collaborate/publish) |
