results

K2-308 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 78.3391194 decimal
DEC 16.4141986 decimal
Host Star Metallicity -0.1 0.08 Rampalli et al. 2019
Host Star log(g) 3.94 0.44 Log10(cgs) Rampalli et al. 2019
Host Star Radius [R_Sun] 1.24 0.1 Sol Rampalli et al. 2019
Host Star Effective Temperature [K] 6100.0 263.0 K Rampalli et al. 2019
a/Rs 7.94 0.55 Rampalli et al. 2019
eccentricity 0.0 Rampalli et al. 2019
inclination [degrees] 88.44 1.09 deg Rampalli et al. 2019
omega [degrees] 0.0 deg Rampalli et al. 2019
orbital period [days] 3.38628 2e-05 day Rampalli et al. 2019
Rp 9.91 0.98 R_Earth Rampalli et al. 2019
Rp/Rs 0.0791 0 ExoFOP-TESS TOI
ephemeris [JD] 2457823.2233 0.0006 BJD Rampalli et al. 2019

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2457823.2233 0.0006 BJD Rampalli et al. 2019
2459174.356092 0.00308392 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001483
Parameter Value Uncertainty
Am1 1.037 0.018
Am2 -0.027 0.017
a/Rs 10.68 1.7
Rp/Rs 0.085 0.033
ephemeris [JD] 2459624.745 0.013
eccentricity 0.0
inclination [degrees] 88.44
omega [degrees] 0.0
orbital period [days] 3.38628
u0 2.088462269272778
u1 -3.414193554830103
u2 3.618198715969028
u3 -1.292467376496341
duration 0.099 0.016
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)
Light curve chart for 0002403
Parameter Value Uncertainty
Am1 1.186 0.03
Am2 -0.132 0.053
a/Rs 10.64 1.53
Rp/Rs 0.157 0.046
ephemeris [JD] 2459966.745 0.012
eccentricity 0.0
inclination [degrees] 88.44
omega [degrees] 0.0
orbital period [days] 3.38628
u0 2.659011902854316
u1 -4.836894225721116
u2 4.893033728738296
u3 -1.7151513329596124
duration 0.103 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
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)