results

GJ 1214 b

Timing Plot

Total Reductions to Date: 8

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.5804045001021658 3.555268296332205e-09
Ephemeris (BJD_TDB) 2460159.7343406808 3.495700566058781e-06
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 258.8313991 decimal
DEC 4.9606795 decimal
Host Star Metallicity 0.24 0.11 Mahajan et al. 2024
Host Star log(g) 5.0286 0.0078 Log10(cgs) Mahajan et al. 2024
Host Star Radius [R_Sun] 0.2162 0.0025 Sol Mahajan et al. 2024
Host Star Effective Temperature [K] 3026.0 130.0 K Yalçınkaya et al. 2024
a/Rs 15.27 0.02 Schlawin et al. 2024
eccentricity 0.0 0.0079 Schlawin et al. 2024
inclination [degrees] 89.32 0.03 deg Schlawin et al. 2024
omega [degrees] 90.0 7.5 deg Schlawin et al. 2024
orbital period [days] 1.580404341 7.9e-08 day Schlawin et al. 2024
Rp 2.733 0.033 R_Earth Mahajan et al. 2024
Rp/Rs 0.1159 0 Mahajan et al. 2024
ephemeris [JD] 2460143.93029503 3.58e-06 BJD-TDB Schlawin et al. 2024

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454934.916934 2.7e-05 BJD Cáceres et al. 2014
2454964.944054 0.0002315 HJD, UTC-BJD Sada et al. 2010, Charbonneau et al. 2009
2454980.748863667 6.333333333333333e-05 BJD-TDB Gillon et al. 2014, Carter et al. 2011, Carter et al. 2011
2455320.535733 2.1e-05 BJD-TDB Harpsøe et al. 2013
2455701.413328 6.6e-05 BJD Cloutier et al. 2021
2455799.398485 1.9e-05 BJD-TDB Yalçınkaya et al. 2024
2455881.57931 2.2e-05 BJD-TDB Kokori et al. 2022
2455886.320526 2.3e-05 BJD-TDB Kokori et al. 2023
2459639.7812619 9e-06 BJD-TDB Mahajan et al. 2024
2460143.93029503 3.58e-06 BJD-TDB Schlawin et al. 2024

Observations

Light curve chart for 0000907
Parameter Value Uncertainty
Am1 0.327 0.079
Am2 1.0 0.28
a/Rs 15.313 0.057
Rp/Rs 0.231 0.066
ephemeris [JD] 2459402.741 0.011
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.121755357643097
u1 -0.2830759277573122
u2 0.2594454429842935
u3 -0.09812486900403988
duration 0.0397 0.0027
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CV Clear (unfiltered) reduced to V sequence 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0001451
Parameter Value Uncertainty
Am1 1.617 0.058
Am2 -0.41 0.34
a/Rs 15.258 0.058
Rp/Rs 0.141 0.039
ephemeris [JD] 2459710.92 0.012
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.604842581134086
u1 -1.2059716446596644
u2 0.8591947024502524
u3 -0.2580656261216753
duration 0.0371 0.002
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 0001503
Parameter Value Uncertainty
Am1 0.891 0.017
Am2 0.067 0.044
a/Rs 15.33 0.058
Rp/Rs 0.23 0.067
ephemeris [JD] 2459726.6901 0.0089
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.6049323863893319
u1 -1.20549884858692
u2 0.8582467542496146
u3 -0.2576802792631532
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)
Light curve chart for 0003459
Parameter Value Uncertainty
Am1 1.034 0.01
Am2 -0.0193 0.0078
a/Rs 15.192 0.058
Rp/Rs 0.123 0.024
ephemeris [JD] 2460072.8169 0.0049
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.2627018451805099
u1 -0.35049841907475265
u2 0.11122324547130988
u3 -0.023426669919711582
duration 0.03671 0.00083
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 0004015
Parameter Value Uncertainty
Am1 1.0109 0.0016
Am2 -0.0063 0.0065
a/Rs 15.177 0.057
Rp/Rs 0.1059 0.0055
ephemeris [JD] 2460134.45174 0.00075
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.862286287990681
u1 -0.19576415084719384
u2 0.5799357466885029
u3 -0.2464578751902739
duration 0.03625 0.00023
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO PJEF (collaborate/publish)
Light curve chart for 0004045
Parameter Value Uncertainty
Am1 1.049 0.016
Am2 -0.04 0.051
a/Rs 15.175 0.057
Rp/Rs 0.11 0.022
ephemeris [JD] 2460140.7755 0.0041
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8376545043074879
u1 -0.1188676811799616
u2 0.49606201515434667
u3 -0.21484883088997292
duration 0.03641 0.00073
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO CCHD (collaborate/publish)
Light curve chart for 0004594
Parameter Value Uncertainty
Am1 1.0221 0.0046
Am2 -0.018 0.011
a/Rs 15.37 0.057
Rp/Rs 0.0962 0.0057
ephemeris [JD] 2460140.76977 0.00072
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8586641573766184
u1 -0.19168594693188293
u2 0.5794776998454428
u3 -0.24645590165528763
duration 0.03544 0.00023
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO FTAC (collaborate/publish)
Light curve chart for 0004595
Parameter Value Uncertainty
Am1 1.0178 0.005
Am2 -0.014 0.022
a/Rs 15.34 0.057
Rp/Rs 0.1337 0.0072
ephemeris [JD] 2460159.73073 0.00057
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8599685652777211
u1 -0.19484307548908564
u2 0.581934051674921
u3 -0.24705953279206327
duration 0.03666 0.00031
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO FTAC (collaborate/publish)