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WASP-31 b

View target in exoplanet catalog
chart

Total Reductions to Date: 1

Date Processed: 09/18/2023 at 00:07:19 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.4058875782359648 2.406130171474956e-07
Ephemeris (BJD_TDB) 2460001.802278322 0.00026614111424048937
Time saved (hours) 0.0015  

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

Light curve chart for 0002835
Parameter Value Uncertainty
Am1 1.056 0.017
Am2 -0.02 0.0058
a/Rs 7.7 0.45
Rp/Rs 0.159 0.021
ephemeris [JD] 2460001.8069 0.0049
eccentricity 0.047
inclination [degrees] 84.41
omega [degrees] 0.0
orbital period [days] 3.4059095
u0 2.126746644745529
u1 -3.806295873595441
u2 4.266570378541301
u3 -1.5870210861145364
duration 0.125 0.014
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 FMAA (collaborate/publish) MOBS

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