TRAPPIST-1

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
TRAPPIST-1
TRAPPIST-1 b	1.51 d	1.12 R_⨁	Transit	2016	Gillon et al. 2016	Confirmed Planet
TRAPPIST-1 c	2.42 d	1.1 R_⨁	Transit	2016	Gillon et al. 2016	Confirmed Planet
TRAPPIST-1 d	4.05 d	0.79 R_⨁	Transit	2016	Gillon et al. 2016	Confirmed Planet
TRAPPIST-1 e	6.1 d	0.92 R_⨁	Transit	2017	Gillon et al. 2017	Confirmed Planet
TRAPPIST-1 f	9.21 d	1.05 R_⨁	Transit	2017	Gillon et al. 2017	Confirmed Planet
TRAPPIST-1 g	12.35 d	1.13 R_⨁	Transit	2017	Gillon et al. 2017	Confirmed Planet
TRAPPIST-1 h	18.77 d	0.76 R_⨁	Transit	2017	Gillon et al. 2017	Confirmed Planet

Exoplanet Archive Notes (3)

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TRAPPIST-1

Original planet parameters for planet 'd' retracted by Gillon et al. (2017) owing to incorrect period. (Gillon et al. 2016)

TRAPPIST-1 d

Omitted semi-major axis, irradiation, equilibrium temperature, ratio of distance to stellar radius (ranges of discrete values given for set of possible periods). See Table 1 of ref. (Gillon et al. 2016)
Original planet parameters for planet 'd' retracted by Gillon et al. (2017) owing to incorrect period. (Gillon et al. 2017)

TRAPPIST-1 Stellar Parameters (10 Solutions)

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RA: 23h06m30.33s

Dec: -05d02m36.46s

Distance: 12.429888806540756±0.018706614394702 pc

Parallax: 80.451242610777669±0.121076736607856 mas

Ecliptic Latitude: .62982 deg

Ecliptic Longitude: 345.73298 deg

Galactic Latitude: -56.64891 deg

Galactic Longitude: 69.71519 deg

Total Proper Motion: 1026.5792712±8.0000000 mas/yr

Proper Motion (RA): 901.0±8.0 mas/yr

Proper Motion (Dec): -492.0±8.0 mas/yr

Photometry: m_V
17.02±0.20; m_TESS
13.8529000±0.0112926; m_J
11.354±0.022; m_H
10.718±0.021; m_Ks
10.296±0.023; m_Kep
12.917; m_Ic
14.0±0.1; m_Gaia
15.645100±0.001448; m_g
19.6235000±0.0155229; m_i
15.092300±0.004339; m_r
17.996300±0.007352; m_u
23.305600±0.803622; m_z
13.4342000±0.0040633

Mission: K2 : Observed in Campaign 12

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; TOI; K2 Names; K2 Planets and Candidates; K2 Targets; Stellar Hosts; K2 Time Series

Source	Piaulet-Ghorayeb et al. 2025	Agol et al. 2021	Ducrot et al. 2020	Hirano et al. 2020	TICv8	Gaia DR2	Grimm et al. 2018	Gillon et al. 2017	Gillon et al. 2016	ExoFOP
T_eff (K)	2566±26	2566±26	2520±39	---	---	3352.3333+103.6670-61.8333	---	2559±50	2550±55	5780
L_✶ (log₁₀(L_⦿))	-3.26+0.01-0.02	-3.26+0.01-0.02	-3.26+0.01-0.01	---	---	---	---	-3.28+0.03-0.03	-3.28+0.03-0.03	---
Metallicity (dex)	0.0520±0.0730 [Fe/H]	---	0.05350±0.08800 [Fe/H]	---	---	---	---	0.040±0.080 [Fe/H]	0.040±0.080 [Fe/H]	---
Age (Gyr)	7.6±2.2	---	---	---	---	---	---	---	>0.5	---
ρ_✶ (g/cm³)	---	75.05+1.02-1.66	67.64±5.50	---	84.5307882±11.2901428	---	---	71.5+1.7-3.1	70.9+8.0-4.6	---
M_✶ (M_⦿)	0.0898±0.0023	0.0898±0.0023	0.0898±0.0023	---	0.09077820±0.02000690	---	0.089±0.007	0.0802±0.0073	0.080±0.009	---
R_✶ (R_⦿)	0.1192±0.0013	0.1192±0.0013	0.1234±0.0033	---	0.1148270±0.0033573	---	---	0.1170±0.0036	0.117±0.004	0.114826999604702±0.003357280000000
P_rot (days)	3.30±0.14	---	---	---	---	---	---	---	1.40±0.05	---
log g (log₁₀(cm/s²))	5.2396+0.0056-0.0073	5.2396+0.0056-0.0073	---	---	5.2759600±0.0719093	---	---	---	---	5.2759600±0.0719093
v sin i (km/s)	---	---	---	2.04+0.18-0.16	---	---	---	---	---	---
Sp. T	M8.0 V	---	---	---	---	---	---	---	---	---

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TRAPPIST-1 b Planetary Parameters (9 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; TOI; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Rathcke et al. 2025	Ducrot et al. 2020	Hirano et al. 2020	Grimm et al. 2018	Gillon et al. 2017	de Wit et al. 2016	Gillon et al. 2016	ExoFOP
T_eq (K)	---	---	397.6±3.8	---	---	400.1±7.7	366	400±9	802.860220389002
i (deg)	89.728±0.165	89.80+0.14-0.12	89.28±0.32	---	---	89.65+0.22-0.27	89.39±0.32	89.41±0.41	---
δ (%)	0.7378±0.0064	---	---	---	---	0.7266±0.0088	0.8015±0.0220	0.754±0.025	1.06934881603416±0.11801766000000
T₁₄ (hours)	0.6010±0.0018	---	0.60515±0.00155	---	---	0.6067±0.0028	0.6020±0.0077	0.6020±0.0077	0.640149871039871±0.125401200000000
T_C (days)	---	2460501.405464+0.000010-0.000011 (BJD-TDB)	2457322.514193±0.000003 (BJD-TDB)	2458362.0021+0.0016-0.0022 (BJD-TDB)	---	2457322.51736±0.00010 (BJD-TDB)	2457512.88646±0.00030 (BJD)	2457322.51765±0.00025 (BJD-TDB)	2460209.80835200±0.00109332 (BJD)
a/R_✶	20.843+0.094-0.155	20.802+0.052-0.078	20.13+0.46-0.55	---	---	20.50+0.16-0.31	---	20.45+0.43-0.81	---
b	0.0950+0.0650-0.0610	---	0.254+0.110-0.085	---	---	0.126+0.092-0.078	---	0.21±0.14	---
S (S_⨁)	4.153+0.161-0.159	---	4.15±0.16	---	---	4.25±0.33	---	4.25±0.38	98.1930529305747
M_p (M_⨁)	1.374±0.069	---	---	---	1.017+0.154-0.143	0.850±0.720	---	---	---
M_p (M_Jup)	0.004323±0.000217	---	---	---	0.003200+0.000485-0.000450	0.00267±0.00227	---	---	---
e	---	0	---	---	0.00622±0.00304	<0.081	---	0	---
P (days)	1.510826±0.000006	1.5108261±0.0000058	1.51088432±0.00000015	1.51087+0.00022-0.00017	---	1.51087081±0.00000060	---	1.510848±0.000019	1.51094471179194±0.00012604707000
ρ (g/cm³)	5.442+0.265-0.276	---	---	---	4.00+0.51-0.50	3.6±3.1	---	---	---
R_p (R_⨁)	1.116+0.014-0.012	---	---	---	1.121+0.031-0.032	1.086±0.035	---	1.113±0.044	1.20389171822242±0.23403676000000
R_p (R_Jup)	0.09956+0.00125-0.00107	---	---	---	0.1000+0.0028-0.0029	0.09689±0.00312	---	0.09930±0.00393	0.107404210110061±0.020879397178371
a (au)	0.01154±0.00010	---	0.011534+0.000099-0.000092	---	0.011547750±0.000000057	0.01111±0.00034	---	0.01111±0.00040	---
ω (deg)	---	90	---	---	336.86±34.24	---	---	---	---
R_p/R_✶	0.08590±0.00037	0.08507+0.00016-0.00017	---	---	---	---	---	---	---
λ (deg)	---	---	---	15+26-30	---	---	---	---	---

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TRAPPIST-1 c Planetary Parameters (7 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Rathcke et al. 2025	Ducrot et al. 2020	Grimm et al. 2018	Gillon et al. 2017	de Wit et al. 2016	Gillon et al. 2016
T_eq (K)	---	---	339.7±3.3	---	341.9±6.6	315	342±8
i (deg)	89.778±0.118	89.83761834+0.09000000-0.08000000	89.47±0.24	---	89.67±0.17	89.58±0.11	89.50±0.31
δ (%)	0.7123±0.0064	---	---	---	0.687±0.010	0.7290±0.0240	0.672±0.042
T₁₄ (hours)	0.7005±0.0022	---	0.707±0.002	---	0.7062±0.0037	0.6963±0.0135	0.6963±0.0135
T_C (days)	---	2460501.385348+0.000011-0.000012 (BJD-TDB)	2457282.8113871±0.0000038 (BJD-TDB)	---	2457282.80728±0.00019 (BJD-TDB)	2457512.88019±0.00016 (BJD)	2457362.72618±0.00033 (BJD-TDB)
a/R_✶	28.549+0.129-0.212	28.422+0.073-0.111	27.57+0.62-0.76	---	28.08+0.22-0.42	---	28.0+0.6-1.1
b	0.109+0.059-0.061	---	0.254+0.110-0.087	---	0.161+0.076-0.084	---	0.25±0.15
S (S_⨁)	2.214+0.086-0.085	---	2.211±0.085	---	2.27±0.18	---	2.26±0.21
M_p (M_⨁)	1.308±0.056	---	---	1.156+0.142-0.131	1.38±0.61	---	---
M_p (M_Jup)	0.004115±0.000176	---	---	0.003637+0.000447-0.000412	0.00434±0.00192	---	---
e	---	0	---	0.00654±0.00188	<0.083	---	0
P (days)	2.421937±0.000018	2.4219371+0.0000180-0.0000179	2.42179346±0.00000023	---	2.4218233±0.0000017	---	2.421848±0.000028
ρ (g/cm³)	5.464+0.221-0.237	---	---	4.87+0.46-0.43	6.45±2.92	---	---
R_p (R_⨁)	1.097+0.014-0.012	---	---	1.095+0.030-0.031	1.056±0.035	---	1.049±0.050
R_p (R_Jup)	0.09787+0.00125-0.00107	---	---	0.09769+0.00268-0.00277	0.09421±0.00312	---	0.09359±0.00446
a (au)	0.01580±0.00013	---	0.01579+0.00014-0.00013	0.01581512±0.00000015	0.01521±0.00047	---	0.01522±0.00055
ω (deg)	---	90	---	282.45±17.10	---	---	---
R_p/R_✶	0.08440±0.00038	0.08453+0.00016-0.00017	---	---	---	---	---

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TRAPPIST-1 d Planetary Parameters (5 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Piaulet-Ghorayeb et al. 2025	Ducrot et al. 2020	Grimm et al. 2018	Gillon et al. 2017
a/R_✶	40.216+0.182-0.299	40.15±0.18	38.85+0.88-1.10	---	39.55+0.30-0.59
T_eq (K)	---	286±3	286.2±2.8	---	288.0±5.6
b	0.0630+0.0630-0.0430	0.060±0.050	0.235+0.120-0.094	---	0.17±0.11
S (S_⨁)	1.115±0.043	1.119+0.047-0.044	1.114±0.043	---	1.143±0.088
M_p (M_⨁)	0.388±0.012	0.388±0.012	---	0.297+0.039-0.035	0.41±0.27
M_p (M_Jup)	0.00122±0.00004	0.00122±0.00004	---	0.000934+0.000123-0.000110	0.0013±0.0008
e	---	---	---	0.00837±0.00093	<0.070
i (deg)	89.896±0.077	89.909+0.068-0.071	89.65±0.15	---	89.75±0.16
P (days)	4.049219±0.000026	4.049219±0.000026	4.04978035±0.00000266	---	4.049610±0.000063
ρ (g/cm³)	4.37+0.15-0.17	---	---	3.40+0.37-0.34	4.9±3.3
R_p (R_⨁)	0.788+0.011-0.010	0.804+0.014-0.012	---	0.784±0.023	0.772±0.030
R_p (R_Jup)	0.0703+0.0010-0.0009	0.0717+0.0012-0.0011	---	0.0699±0.0021	0.0689±0.0027
a (au)	0.02227±0.00019	0.0223±0.0003	0.02226+0.00019-0.00018	0.02228038±0.00000044	0.02144+0.00066-0.00063
δ (%)	0.3676±0.0063	---	---	---	0.367±0.017
T₁₄ (hours)	0.8145±0.0040	---	0.8228±0.0053	---	0.8188±0.0110
T_C (days)	---	---	2457670.1463014±0.0000184 (BJD-TDB)	---	2457670.14165±0.00035 (BJD-TDB)
ω (deg)	---	---	---	-8.73±6.17	---
R_p/R_✶	0.06063±0.00052	---	---	---	---

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TRAPPIST-1 e Planetary Parameters (5 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Ducrot et al. 2020	Hirano et al. 2020	Grimm et al. 2018	Gillon et al. 2017
a/R_✶	52.855+0.239-0.392	51.0+1.2-1.4	---	---	51.97+0.40-0.77
T_eq (K)	---	249.7±2.4	---	---	251.3±4.9
b	0.191±0.041	0.299+0.085-0.072	---	---	0.12+0.11-0.09
S (S_⨁)	0.646±0.025	0.645±0.025	---	---	0.662±0.051
M_p (M_⨁)	0.692±0.022	---	---	0.772+0.079-0.075	0.62±0.58
M_p (M_Jup)	0.00218±0.00007	---	---	0.00243+0.00025-0.00024	0.0020±0.0018
e	---	---	---	0.00510±0.00058	<0.085
i (deg)	89.793±0.048	89.663±0.092	---	---	89.86+0.10-0.12
P (days)	6.101013±0.000035	6.09956479±0.00000178	6.09705+0.00096-0.00093	---	6.099615±0.000011
ρ (g/cm³)	4.90+0.17-0.18	---	---	5.646+0.419-0.386	4.4±4.2
R_p (R_⨁)	0.920+0.013-0.012	---	---	0.910+0.026-0.027	0.918±0.039
R_p (R_Jup)	0.0821+0.0012-0.0011	---	---	0.0812+0.0023-0.0024	0.0819±0.0035
a (au)	0.02925±0.00250	0.02924+0.00025-0.00023	---	0.02928285±0.00000034	0.02817+0.00083-0.00087
δ (%)	0.5012±0.0078	---	---	---	0.519±0.026
T₁₄ (hours)	0.9293±0.0043	0.9385±0.0042	---	---	0.9535±0.0120
T_C (days)	---	2457660.3676621±0.0000143 (BJD-TDB)	2458361.8113+0.0028-0.0025 (BJD-TDB)	---	2457660.37859±0.00038 (BJD-TDB)
ω (deg)	---	---	---	108.37±8.47	---
R_p/R_✶	0.07079±0.00055	---	---	---	---
λ (deg)	---	---	9.0+45.0-51.0	---	---

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TRAPPIST-1 f Planetary Parameters (5 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Agol et al. 2021	Ducrot et al. 2020	Hirano et al. 2020	Grimm et al. 2018	Gillon et al. 2017
a/R_✶	69.543+0.314-0.516	67.10+1.15-1.90	---	---	68.4+0.5-1.0
T_eq (K)	---	217.7±2.1	---	---	219.0±4.2
b	0.312+0.023-0.018	0.391±0.056	---	---	0.382±0.035
S (S_⨁)	0.373+0.015-0.014	0.373±0.014	---	---	0.382±0.030
M_p (M_⨁)	1.039±0.031	---	---	0.9340+0.0800-0.0780	0.68±0.18
M_p (M_Jup)	0.003269±0.000098	---	---	0.002939+0.000252-0.000245	0.0021±0.0006
e	---	---	---	0.01007±0.00068	<0.063
i (deg)	89.740±0.019	89.666±0.059	---	---	89.680±0.034
P (days)	9.207540±0.000032	9.20659399±0.00000212	9.2129±0.0010	---	9.206690±0.000015
ρ (g/cm³)	5.02+0.14-0.16	---	---	4.50+0.21-0.20	3.30±0.94
R_p (R_⨁)	1.045+0.013-0.012	---	---	1.046+0.029-0.030	1.045±0.038
R_p (R_Jup)	0.09323+0.00116-0.00107	---	---	0.09332+0.00259-0.00268	0.09323±0.00339
a (au)	0.03849±0.00033	0.038774+0.000330-0.000310	---	0.03853361±0.00000048	0.0371±0.0011
δ (%)	0.6465±0.0076	---	---	---	0.673±0.023
T₁₄ (hours)	1.0480±0.0042	1.055±0.005	---	---	1.043±0.010
T_C (days)	---	2457671.3737299±0.0000157 (BJD-TDB)	2458361.8545±0.0018 (BJD-TDB)	---	2457671.39767±0.00023 (BJD-TDB)
ω (deg)	---	---	---	368.81±3.11	---
R_p/R_✶	0.08040±0.00047	---	---	---	---
λ (deg)	---	---	21±32	---	---

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TRAPPIST-1 g Planetary Parameters (4 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Ducrot et al. 2020	Grimm et al. 2018	Gillon et al. 2017
a/R_✶	84.591+0.382-0.628	81.7+1.8-2.3	---	83.2+0.6-1.2
b	0.379+0.018-0.014	0.430±0.049	---	0.421±0.031
S (S_⨁)	0.252±0.010	0.2520±0.0097	---	0.258±0.020
M_p (M_⨁)	1.321±0.038	---	1.148+0.098-0.095	1.34±0.88
M_p (M_Jup)	0.004156±0.000120	---	0.003612+0.000308-0.000299	0.00422±0.00277
i (deg)	89.742±0.012	89.698±0.044	---	89.710±0.025
P (days)	12.352446±0.000054	12.35355570±0.00000341	---	12.35294±0.00012
ρ (g/cm³)	5.06+0.14-0.16	---	4.18+0.19-0.18	5.2±3.5
R_p (R_⨁)	1.129+0.015-0.013	---	1.148+0.032-0.033	1.127±0.041
R_p (R_Jup)	0.1007+0.0013-0.0012	---	0.1024+0.0029-0.0029	0.1005±0.0037
R_p/R_✶	0.08692±0.00053	---	---	---
a (au)	0.04683±0.00040	0.04681528+0.00040000-0.00037000	0.04687692±0.00000032	0.0451±0.0014
δ (%)	0.7555±0.0092	---	---	0.782±0.027
T₁₄ (hours)	1.1370±0.0047	1.152±0.006	---	1.140±0.011
T_eq (K)	---	197.3±1.9	---	198.6±3.8
e	---	---	0.00208±0.00058	<0.061
T_C (days)	---	2457665.3628439±0.0000206 (BJD-TDB)	---	2457665.34937±0.00021 (BJD-TDB)
ω (deg)	---	---	191.34±13.83	---

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TRAPPIST-1 h Planetary Parameters (5 Solutions)

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Status: Confirmed Planet

Detected By: Transit Timing Variations, Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	Agol et al. 2021	Ducrot et al. 2020	Grimm et al. 2018	Luger et al. 2017	Gillon et al. 2017
a/R_✶	111.817+0.505-0.830	107.9+2.4-3.0	---	109±4	117+50-26
T_eq (K)	---	171.7±1.7	---	173±4	168+21-28
b	0.378+0.024-0.023	0.448±0.054	---	0.45+0.06-0.08	0.45+0.22-0.29
S (S_⨁)	0.144±0.006	0.1440±0.0055	---	0.165±0.025	0.131+0.081-0.067
i (deg)	89.805±0.013	89.763±0.037	---	89.76+0.05-0.04	89.80+0.10-0.05
P (days)	18.772866±0.000214	18.76727450±0.00001876	---	18.767+0.004-0.003	20+15-6
R_p (R_⨁)	0.755±0.014	---	0.773+0.026-0.027	0.752+0.032-0.031	0.755±0.034
R_p (R_Jup)	0.0674±0.0012	---	0.0690+0.0023-0.0024	0.0671+0.0029-0.0028	0.0674±0.0030
a (au)	0.06189±0.00053	0.0618656+0.0005300-0.0004900	0.06193488±0.00000080	---	0.063+0.027-0.013
δ (%)	0.3375±0.0101	---	---	0.346±0.018	0.3520±0.0326
T₁₄ (hours)	1.2690±0.0093	1.271±0.014	---	1.26±0.02	1.280+0.045-0.033
T_C (days)	---	2457662.5741486±0.0000913 (BJD-TDB)	---	2457662.55284±0.00037 (BJD-TDB)	2457662.55463±0.00056 (BJD-TDB)
ω (deg)	---	---	338.92±9.66	---	---
M_p (M_⨁)	0.326±0.020	---	0.331+0.056-0.049	---	---
M_p (M_Jup)	0.00103±0.00006	---	0.00104+0.00018-0.00015	---	---
e	---	---	0.00567±0.00121	---	---
ρ (g/cm³)	4.16+0.33-0.30	---	3.96+0.65-0.56	---	---
R_p/R_✶	0.05809±0.00087	---	---	0.0588±0.0016	---

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Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 7 Confirmed Planets; 1 K2 Targets; 1 2MASS Point Source Catalog

Data Files: 1 K2 Time Series; 7 Associated Literature Data

Bibliography (22 References)

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JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e
Espinoza et al. 2025 Reference Overview
Strict Limits on Potential Secondary Atmospheres on the Temperate Rocky Exo-Earth TRAPPIST-1 d
Piaulet-Ghorayeb et al. 2025 Reference Overview
Combined analysis of the 12.8 and 15 μm JWST/MIRI eclipse observations of TRAPPIST-1 b
Ducrot et al. 2025 Reference Overview
Stellar Contamination Correction Using Back-to-back Transits of TRAPPIST-1 b and c
Rathcke et al. 2025 Reference Overview
Promise and Peril: Stellar Contamination and Strict Limits on the Atmosphere Composition of TRAPPIST-1 c from JWST NIRISS Transmission Spectra
Radica et al. 2025 Reference Overview
No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c
Zieba et al. 2023 Reference Overview
Thermal emission from the Earth-sized exoplanet TRAPPIST-1 b using JWST
Greene et al. 2023 Reference Overview
Near-infrared transmission spectrum of TRAPPIST-1 h using Hubble WFC3 G141 observations
Gressier et al. 2022 Reference Overview
Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides
Agol et al. 2021 Reference Overview
TRAPPIST-1: Global results of the Spitzer Exploration Science Program Red Worlds
Ducrot et al. 2020 Reference Overview
Evidence for Spin-Orbit Alignment in the TRAPPIST-1 System
Hirano et al. 2020 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Disentangling the Planet from the Star in Late-Type M Dwarfs: A Case Study of TRAPPIST-1g
Wakeford et al. 2019 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
The nature of the TRAPPIST-1 exoplanets
Grimm et al. 2018 Reference Overview
ExoFOP TOI Table
ExoFOP
A seven-planet resonant chain in TRAPPIST-1
Luger et al. 2017 Reference Overview
Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
Gillon et al. 2017 Reference Overview
A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c
de Wit et al. 2016 Reference Overview
Temperate Earth-sized planets transiting a nearby ultracool dwarf star
Gillon et al. 2016 Reference Overview
The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
EPIC Catalog Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview

Legend

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System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
Search
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Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/7/TRAPPIST-1.json

Catalog Parameters

RA

ra

23h06m30.33s

Dec

dec

-05d02m36.46s

β

elat

.62982

λ

elon

345.73298

b

glat

-56.64891

l

glon

69.71519

m_V

sy_vmag

17.02±0.20

m_TESS

sy_tmag

13.8529000±0.0112926

m_J

sy_jmag

11.354±0.022

m_H

sy_hmag

10.718±0.021

m_Ks

sy_kmag

10.296±0.023

m_Kep

sy_kepmag

12.917

sy_w1mag

no_data

sy_w2mag

no_data

sy_w3mag

no_data

sy_w4mag

no_data

m_Ic

sy_icmag

14.0±0.1

m_Gaia

sy_gaiamag

15.645100±0.001448

sy_bmag

no_data

m_g

sy_gmag

19.6235000±0.0155229

m_i

sy_imag

15.092300±0.004339

m_r

sy_rmag

17.996300±0.007352

m_u

sy_umag

23.305600±0.803622

m_z

sy_zmag

13.4342000±0.0040633

μ

sy_pm

1026.5792712±8.0000000

μ_δ

sy_pmdec

-492.0±8.0

μ_α

sy_pmra

901.0±8.0

π

sy_plx

80.451242610777669±0.121076736607856

Distance

sy_dist

12.429888806540756±0.018706614394702

Set Parameters

R_✶

st_rad

0.117±0.004

T_eff

st_teff

3352.3333+103.6670-61.8333

TRAPPIST-1 Overview

TRAPPIST-1 Architecture & Discovery Information

TRAPPIST-1