Registry · exoplanet

Kepler-37 c

Exoplanet

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 18h 56m 14.22s
Declination: +44° 31′ 06.1″
Galactic l, b: 74.437, 17.84
Magnitude V: 9.77
Distance: 63.921 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	Kepler-37
Discovery	Transit, 2013 · Kepler
Orbital period	21.3018 d
Semi-major axis	0.139 au
Eccentricity	0.099
Radius	0.755 R⊕ · 0.06736 R♃
Mass	1.3 M⊕ · 0.00409 M♃
Density	15 g/cm³
Equilibrium temperature	615 K
System distance	63.921 pc

Published measurements

6 quantities measured more than once

One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.3	M_earth		Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
12	M_earth		Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014

Radius 13 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.718	R_earth	± 0.024	Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.755	R_earth	± 0.033	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
0.718	R_earth	± 0.024	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
0.725	R_earth	± 0.04	Transit	NASA Exoplanet Archive	Berger et al. 2018	2018
0.68	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
0.705	R_earth	± 0.012	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
0.75	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014
0.72	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2013
0.742	R_earth	± 0.065	Transit	NASA Exoplanet Archive	Barclay et al. 2013	2013
0.71	R_earth	± 0.02	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2013
0.71	R_earth	± 0.02	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2013
0.75	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2013

Show the remaining 1

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.71	R_earth	± 0.02	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2013

Orbital period 15 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
21.30199	d		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
21.30185	d	± 1.80e-05	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
21.30185	d	± 1.81e-05	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2019	2019
21.30199	d	± 5.43e-05	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
21.30191	d	± 2.45e-06	Transit	NASA Exoplanet Archive	Holczer et al. 2016	2016
21.30199	d	± 5.43e-05	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
21.30207	d	± 9.20e-05	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
21.302	d		Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014
21.30182	d	± 7.80e-05	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2013
21.30189	d	± 4.60e-05	Transit	NASA Exoplanet Archive	Barclay et al. 2013	2013
21.30199	d	± 5.43e-05	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2013
21.30199	d	± 5.43e-05	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2013

Show the remaining 3

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
21.30182	d	± 7.80e-05	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 Supplemental KOI Table	2013
21.302	d	± 0.00013	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2013
21.30199	d	± 5.43e-05	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2013

Semi-major axis 9 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.1388497	au		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.139	au	± 0.002	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
0.13892	au	± 0.00196	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
0.1413	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2013
0.1368	au	± 0.0011	Transit	NASA Exoplanet Archive	Barclay et al. 2013	2013
0.1398	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2013
0.1398	au		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2013
0.137	au		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2013
0.1398	au		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2013

Eccentricity 8 values

Value	Uncertainty	Band / method	Source	Reference	Year
0		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.099		Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
0.09	± 0.18	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2013
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2013
0		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2013
0		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2013
0		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2013

Equilibrium temperature 6 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
615	K	± 9	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
564	K		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2013
562	K		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2013
562	K		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2013
538	K		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2013
562	K		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2013

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Kepler-37	Star	0″	—
Kepler-37 d	Exoplanet	0″	9.77
Kepler-37 e	Exoplanet	0″	9.77
Kepler-37 b	Exoplanet	0″	9.77
BD+44 3020b	Planet	1.202″	—
BD+44 3020e	Planet	1.202″	—
BD+44 3020d	Planet	1.202″	—
BD+44 3020c	Planet	1.202″	—
BD+44 3020	EmLine*	1.202″	9.77
2MASS J18561549+4430150	RGB*	52.88″	—
KOI-3251	Star	151.2″	—

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/kepler-37-c · Registry entry updated 2026-08-14.