results

Kepler-554 b

Total Reductions to Date: 2

Date Processed: 09/06/2025 at 07:00:04 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) - -
Ephemeris (BJD_TDB) - -
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 296.4068982 decimal
DEC 51.3581938 decimal
Host Star Metallicity 0.34 0.04 Fulton & Petigura 2018
Host Star log(g) 4.38559 0.06 Log10(cgs) Gajdoš et al. 2019
Host Star Radius [R_Sun] 1.0189 0.027 Sol Gajdoš et al. 2019
Host Star Effective Temperature [K] 5344.0 122.0 K Gajdoš et al. 2019
a/Rs 6.881 0.151 Q1-Q17 DR25 KOI Table
eccentricity 0.0 Q1-Q17 DR25 KOI Table
inclination [degrees] 89.03 deg Q1-Q17 DR25 KOI Table
omega [degrees] 0.0 deg Gajdoš et al. 2019
orbital period [days] 1.90220773 3.5e-07 day Gajdoš et al. 2019
Rp 4.56 0.13 R_Earth Fulton & Petigura 2018
Rp/Rs 0.0484 0 Q1-Q17 DR25 KOI Table
ephemeris [JD] 2455003.44985 0.00014023 BJD Gajdoš et al. 2019

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454965.405711 0.000192 BJD Holczer et al. 2016
2455003.4496355 0.00017577875 BJD, JD Gajdoš et al. 2019, Q1-Q17 DR25 Supplemental KOI Table, Q1-Q17 DR25 KOI Table, Morton et al. 2016, Q1-Q17 DR24 KOI Table, Q1-Q16 KOI Table, Q1-Q12 KOI Table, Q1-Q8 KOI Table

Observations

Light curve chart for 0004242
Parameter Value Uncertainty
Am1 1.004 0.012
Am2 -0.002 0.014
a/Rs 7.63 0.44
Rp/Rs 0.082 0.026
ephemeris [JD] 2460169.848 0.011
eccentricity 0.0
inclination [degrees] 89.03
omega [degrees] 0.0
orbital period [days] 1.90220773
u0 2.4741611497163243
u1 -4.316962735327717
u2 4.334386488118872
u3 -1.4915848379200867
duration 0.0855 0.0056
Not 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
AAVSO LPAC (collaborate/publish)
Light curve chart for 0004564
Parameter Value Uncertainty
Am1 1.031 0.012
Am2 -0.028 0.027
a/Rs 6.84 0.43
Rp/Rs 0.0 0.01
ephemeris [JD] 2460194.557 0.012
eccentricity 0.0
inclination [degrees] 89.03
omega [degrees] 0.0
orbital period [days] 1.90220773
u0 2.6888989717394747
u1 -4.685991856211397
u2 4.550109233742004
u3 -1.55301628146817
duration 0.0879 0.007
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Clear with blue-blocking 500.0 nm 2000.0 nm
Organization Observer Code Secondary Observers
AAVSO SGEO (collaborate/publish)