results

K2-117 b

Timing Plot

Total Reductions to Date: 2

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.2916078758105194 1.0520732731858748e-06
Ephemeris (BJD_TDB) 2459635.5782718053 0.001792747938061958
Time saved (hours) 0.0323  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 133.8557342 decimal
DEC 10.4692176 decimal
Host Star Metallicity -0.05 0.13 Livingston et al. 2018
Host Star log(g) 4.75 0.01 Log10(cgs) Livingston et al. 2018
Host Star Radius [R_Sun] 0.4 0.07 Sol Kruse et al. 2019
Host Star Effective Temperature [K] 3778.0 53.0 K Livingston et al. 2018
a/Rs 8.18 2.61 Kruse et al. 2019
eccentricity 0.06 0.138304 Dressing et al. 2017
inclination [degrees] 88.36 1.14 deg Dressing et al. 2017
omega [degrees] -22.63 136.8295 deg Dressing et al. 2017
orbital period [days] 1.291605 1.8e-05 day Kruse et al. 2019
Rp 1.74 0.33 R_Earth Kruse et al. 2019
Rp/Rs 0.0426 0 Kruse et al. 2019
ephemeris [JD] 2457140.19095 0.00067 BJD Kruse et al. 2019

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2457138.90021 0.00082 BJD Hirano et al. 2018
2459230.014002 0.0015072 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001245
Parameter Value Uncertainty
Am1 1.0226 0.0097
Am2 -0.018 0.028
a/Rs 2.97 0.53
Rp/Rs 0.0851 0.0038
ephemeris [JD] 2459635.552 0.011
eccentricity 0.06
inclination [degrees] 88.36
omega [degrees] -22.63
orbital period [days] 1.291605
u0 2.186213995625793
u1 -2.9220580043083175
u2 2.5916373633547583
u3 -0.8557933160538278
duration 0.089 0.021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0001464
Parameter Value Uncertainty
Am1 0.473 0.019
Am2 0.45 0.11
a/Rs 5.54 7.47
Rp/Rs 0.079 0.025
ephemeris [JD] 2459710.467 0.012
eccentricity 0.06
inclination [degrees] 88.36
omega [degrees] -22.63
orbital period [days] 1.291605
u0 2.18642110253966
u1 -2.920707360202605
u2 2.5888348797081386
u3 -0.854548583468548
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
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)