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GJ 1214 b

View target in exoplanet catalog
Timing Plot
Global Light Curve

Total Reductions to Date: 8

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.5804045000859988 3.4659324632060173e-09
Ephemeris (BJD_TDB) 2460159.734340697 3.4695762202216036e-06

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 0.325 0.079
Am2 1.0 0.28
a/Rs 15.346 0.056
Rp/Rs 0.23 0.068
ephemeris [JD] 2459402.74 0.011
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.1259251292599626
u1 -0.2922483629517725
u2 0.26663326454301967
u3 -0.1003100268780645
duration 0.0398 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 1.701 0.061
Am2 -0.46 0.34
a/Rs 15.176 0.059
Rp/Rs 0.14 0.041
ephemeris [JD] 2459710.92 0.012
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.6061134008782558
u1 -1.2094244801958518
u2 0.8624932578828972
u3 -0.2591821657131501
duration 0.0372 0.0019
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 0.889 0.017
Am2 0.068 0.043
a/Rs 15.274 0.058
Rp/Rs 0.232 0.066
ephemeris [JD] 2459726.6899 0.009
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.6041408859726696
u1 -1.2042708962231774
u2 0.8577594127015193
u3 -0.2576293896694003
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 -0.0195 0.0075
a/Rs 15.175 0.056
Rp/Rs 0.122 0.024
ephemeris [JD] 2460072.8171 0.0048
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 1.2556690412111777
u1 -0.33002576558890107
u2 0.09034631688427686
u3 -0.015989591160288488
duration 0.03671 0.00084
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 1.0106 0.0016
Am2 -0.0061 0.0063
a/Rs 15.174 0.057
Rp/Rs 0.1054 0.0053
ephemeris [JD] 2460134.45166 0.0007
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8373248696861209
u1 -0.11759745229515989
u2 0.4947314769865585
u3 -0.21445888700544602
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 1.033 0.015
Am2 -0.029 0.051
a/Rs 15.189 0.057
Rp/Rs 0.112 0.023
ephemeris [JD] 2460140.7755 0.0041
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8597319404963563
u1 -0.1952005661774565
u2 0.5829993109961621
u3 -0.24753067662769512
duration 0.03641 0.00081
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 1.0232 0.0046
Am2 -0.018 0.011
a/Rs 15.368 0.058
Rp/Rs 0.0965 0.0057
ephemeris [JD] 2460140.76979 0.00072
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8317279255469241
u1 -0.10696167199381836
u2 0.48736027872706433
u3 -0.21212652501793605
duration 0.03544 0.00024
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 1.0201 0.005
Am2 -0.015 0.022
a/Rs 15.36 0.057
Rp/Rs 0.134 0.007
ephemeris [JD] 2460159.73072 0.00058
eccentricity 0.0
inclination [degrees] 89.32
omega [degrees] 90.0
orbital period [days] 1.580404341
u0 0.8383634544329833
u1 -0.11838753873166163
u2 0.4945047471070608
u3 -0.21448065543968753
duration 0.0366 0.0003
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)

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