Registry · exoplanet

Kepler-25 c

Exoplanet 104 papers

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: 19h 06m 33.21s
Declination: +39° 29′ 16.5″
Galactic l, b: 70.35, 14.16
Magnitude V: 10.77
Distance: 243.25 pc

Also known as

1 identifiers

Kepler-25c

Planet

NASA Exoplanet Archive, composite parameters

Host star	Kepler-25 · F6
Discovery	Transit, 2011 · Kepler
Orbital period	12.7207 d
Semi-major axis	0.1117 au
Eccentricity	0.0061
Radius	5.217 R⊕ · 0.4654 R♃
Mass	15.2 M⊕ · 0.0479 M♃
Density	0.588 g/cm³
Equilibrium temperature	934 K
System distance	243.25 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 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.34531	M_earth		Transit	NASA Exoplanet Archive	Ofir et al. 2025	2025
24.06546	M_earth	± 4.032	Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
15.22398	M_earth	± 1.621	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
15.2	M_earth	± 1.3	Transit	NASA Exoplanet Archive	Mills et al. 2019	2019
24.6	M_earth	± 5.7	Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014
14.3	M_earth	± 2.7	Transit	NASA Exoplanet Archive	Hadden et al. 2014	2014
1,322.12	M_earth		Transit	NASA Exoplanet Archive	Steffen et al. 2012	2012

Radius 15 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
4.627	R_earth	± 0.102	Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
5.217	R_earth	± 0.07	Transit	NASA Exoplanet Archive	Mills et al. 2019	2019
4.627	R_earth	± 0.102	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
5.095	R_earth	± 0.215	Transit	NASA Exoplanet Archive	Berger et al. 2018	2018
4.59	R_earth	± 0.1	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
5.154	R_earth	± 0.06	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
5.2	R_earth	± 0.09	Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014
4.5	R_earth	± 0.08	Transit	NASA Exoplanet Archive	Hadden et al. 2014	2014
4.5	R_earth		Transit	NASA Exoplanet Archive	Steffen et al. 2012	2012
4.51	R_earth	± 0.08	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2011
4.51	R_earth	± 0.08	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2011
4.96046	R_earth	± 0.3945	Transit	NASA Exoplanet Archive	ExoFOP	2011

Show the remaining 3

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
6.51	R_earth	± 0.89	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2011
4.75	R_earth	± 0.28	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2011
4.51	R_earth	± 0.08	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2011

Orbital period 20 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
12.72037	d	± 2.30e-06	Transit	NASA Exoplanet Archive	Ofir et al. 2025	2025
12.72037	d		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
12.72037	d	± 1.70e-06	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
12.7207	d	± 0.00011	Transit	NASA Exoplanet Archive	Mills et al. 2019	2019
12.72037	d	± 1.16e-06	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2019	2019
12.72037	d	± 2.12e-06	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
12.72037	d	± 2.12e-06	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
12.72037	d	± 2.90e-07	Transit	NASA Exoplanet Archive	Holczer et al. 2016	2016
12.72037	d	± 3.50e-06	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
12.7204	d		Transit	NASA Exoplanet Archive	Marcy et al. 2014	2014
12.72	d		Transit	NASA Exoplanet Archive	Hadden et al. 2014	2014
12.72037	d	± 1.40e-06	Transit	NASA Exoplanet Archive	Benomar et al. 2014	2014

Show the remaining 8

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
12.7204	d		Transit	NASA Exoplanet Archive	Steffen et al. 2012	2012
12.72037	d	± 2.12e-06	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2011
12.72037	d	± 2.28e-06	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 Supplemental KOI Table	2011
12.72037	d	± 2.12e-06	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2011
12.72038	d	± 0.0001319	Transit	NASA Exoplanet Archive	ExoFOP	2011
12.72036	d	± 7.10e-06	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2011
12.72037	d	± 2.28e-06	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2011
12.72037	d	± 2.12e-06	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2011

Semi-major axis 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.1116659	au		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.1117	au	± 0.00111	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
0.11	au		Transit	NASA Exoplanet Archive	Steffen et al. 2012	2012
0.113	au		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2011
0.113	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2011
0.113	au		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2011
0.1101	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2011
0.113	au		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2011

Eccentricity 10 values

Value	Uncertainty	Band / method	Source	Reference	Year
0		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.0061	± 0.0049	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
0.0061	± 0.0049	Transit	NASA Exoplanet Archive	Mills et al. 2019	2019
0.01	± 0.07	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
0		Transit	NASA Exoplanet Archive	Benomar et al. 2014	2014
0		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2011
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2011
0		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2011
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2011
0		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2011

Equilibrium temperature 6 values

Value	Unit	Band / method	Source	Reference	Year
941	K	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2011
941	K	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2011
705	K	Transit	NASA Exoplanet Archive	ExoFOP	2011
1,033	K	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2011
934	K	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2011
941	K	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2011

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Kepler-25 d	Exoplanet	0″	10.77
Kepler-25 b	Exoplanet	0″	10.77
Kepler-25	EmLine*	0.09503″	10.62
KOI-1803.01	Planet Candidate	8.39″	—
KOI-1803	Star	8.39″	—
KOI-1803.02	Inexistent	8.425″	—
2MASS J19063429+3927482	Star	89.14″	—
2MASS J19063537+3927170	EclBin	122″	—
2MASS J19062859+3931236	Star	137.8″	—
2MASS J19064275+3927257	C* Candidate	156.4″	—
2MASS J19064526+3931060	Star	177.4″	—

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-25-c · Registry entry updated 2026-08-14.