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GJ 1214 b

View target in exoplanet catalog
chart

Total Reductions to Date: 6

Date Processed: 09/18/2023 at 00:07:19 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.580404676134895 5.1850097297294084e-08
Ephemeris (BJD_TDB) 2460134.4483435694 0.00015521248174034713
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 258.8313991 decimal
DEC 4.9606795 decimal
Host Star Metallicity 0.29 0.12 Cloutier et al. 2021
Host Star log(g) 4.99 0.03 Log10(cgs) Kokori et al. 2022
Host Star Radius [R_Sun] 0.21 0.01 Sol Kokori et al. 2022
Host Star Effective Temperature [K] 3026.0 130.0 K Kokori et al. 2022
a/Rs 14.85 0.16 Cloutier et al. 2021
eccentricity 0.063 Cloutier et al. 2021
inclination [degrees] 88.7 0.1 deg Cloutier et al. 2021
omega [degrees] 0.0 deg Cáceres et al. 2014
orbital period [days] 1.58040454 4e-08 day Kokori et al. 2022
Rp 2.746 0.045 R_Earth Cloutier et al. 2021
Rp/Rs 0.1199 0 Kokori et al. 2022
ephemeris [JD] 2455881.57931 2.2e-05 BJD-TDB Kokori et al. 2022

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
2454980.748864 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
2455881.57931 2.2e-05 BJD-TDB Kokori et al. 2022

Observations

Light curve chart for 0000907
Parameter Value Uncertainty
Am1 0.33 0.08
Am2 0.99 0.27
a/Rs 14.23 0.46
Rp/Rs 0.237 0.071
ephemeris [JD] 2459402.74 0.011
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 0.985018626537732
u1 0.12709105909743276
u2 -0.16375873282476183
u3 0.05164904962979236
duration 0.0418 0.0034
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 1.711 0.061
Am2 -0.46 0.34
a/Rs 14.14 0.47
Rp/Rs 0.134 0.039
ephemeris [JD] 2459710.92 0.012
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 1.4993512194174279
u1 -0.9001603731481018
u2 0.5534751259892668
u3 -0.15266596401117083
duration 0.0385 0.0024
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 0.873 0.017
Am2 0.079 0.045
a/Rs 14.35 0.45
Rp/Rs 0.238 0.068
ephemeris [JD] 2459726.6901 0.0087
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 1.4993869911316824
u1 -0.9000506826352336
u2 0.5532349005446568
u3 -0.15257120079726316
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 1.0318 0.01
Am2 -0.0178 0.008
a/Rs 14.4 0.47
Rp/Rs 0.125 0.025
ephemeris [JD] 2460072.8169 0.0049
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 1.1300161958582948
u1 0.02662067870153761
u2 -0.2609632896991019
u3 0.10432641902792544
duration 0.0376 0.0016
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 1.0126 0.0016
Am2 -0.0074 0.005
a/Rs 14.06 0.28
Rp/Rs 0.1065 0.0041
ephemeris [JD] 2460134.45135 0.00056
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 0.7720028486551083
u1 0.061850234014005745
u2 0.31984314872805386
u3 -0.15369622663113353
duration 0.03787 0.00084
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 1.063 0.016
Am2 -0.051 0.051
a/Rs 14.06 0.46
Rp/Rs 0.113 0.023
ephemeris [JD] 2460140.7747 0.0042
eccentricity 0.063
inclination [degrees] 88.7
omega [degrees] 0.0
orbital period [days] 1.58040454
u0 0.7696357265492921
u1 0.07140418723778963
u2 0.3081925109822118
u3 -0.14923242017686728
duration 0.0381 0.0016
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)

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