Registry · exoplanet

Kepler-197 e

Exoplanet 27 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 40m 54.35s
Declination: +50° 33′ 33.2″
Galactic l, b: 83.304, 13.36
Magnitude V: 11.78
Distance: 330.57 pc

Also known as

1 identifiers

Kepler-197e

Planet

NASA Exoplanet Archive, composite parameters

Host star	Kepler-197 · F5
Discovery	Transit, 2014 · Kepler
Orbital period	25.2097 d
Semi-major axis	0.164 au
Eccentricity	0.38
Radius	0.91 R⊕ · 0.081 R♃
Mass	0.693 M⊕ · 0.00218 M♃
Density	5.05 g/cm³
Equilibrium temperature	691 K
System distance	330.57 pc

Published measurements

5 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.

Radius 11 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.927	R_earth	± 0.114	Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
1.005	R_earth	± 0.253	Transit	NASA Exoplanet Archive	Berger et al. 2018	2018
0.927	R_earth	± 0.114	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
0.9	R_earth	± 0.18	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
0.983	R_earth	± 0.048	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
1.12	R_earth	± 0.15	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2014
0.89	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2014
0.89	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2014
0.95	R_earth	± 0.04	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2014
0.89	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2014
0.91	R_earth	± 0.04	Transit	NASA Exoplanet Archive	Rowe et al. 2014	2014

Orbital period 13 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
25.20998	d		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
25.21031	d	± 0.0001592	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2019	2019
25.20998	d	± 0.0002362	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
25.21086	d	± 2.71e-05	Transit	NASA Exoplanet Archive	Holczer et al. 2016	2016
25.20998	d	± 0.0002362	Transit	NASA Exoplanet Archive	Morton et al. 2016	2016
25.2097	d	± 0.0014	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
25.20971	d	± 0.00035	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2014
25.20998	d	± 0.0002362	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2014
25.20998	d	± 0.0002362	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2014
25.21001	d	± 0.0002037	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2014
25.20998	d	± 0.0002362	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2014
25.20971	d	± 0.000387	Transit	NASA Exoplanet Archive	Rowe et al. 2014	2014

Show the remaining 1

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
25.21001	d	± 0.0002037	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 Supplemental KOI Table	2014

Semi-major axis 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.1598264	au		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.15986	au	± 0.00133	Transit	NASA Exoplanet Archive	Fulton & Petigura 2018	2018
0.16	au		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2014
0.1638	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2014
0.1638	au		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2014
0.1626	au		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2014
0.1638	au		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2014
0.164	au		Transit	NASA Exoplanet Archive	Rowe et al. 2014	2014

Eccentricity 7 values

Value	Uncertainty	Band / method	Source	Reference	Year
0		Transit	NASA Exoplanet Archive	Weiss et al. 2024	2024
0.38	± 0.25	Transit	NASA Exoplanet Archive	Van Eylen & Albrecht 2015	2015
0		Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2014
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2014
0		Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2014
0		Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2014
0		Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2014

Equilibrium temperature 5 values

Value	Unit	Band / method	Source	Reference	Year
703	K	Transit	NASA Exoplanet Archive	Q1-Q8 KOI Table	2014
693	K	Transit	NASA Exoplanet Archive	Q1-Q17 DR24 KOI Table	2014
693	K	Transit	NASA Exoplanet Archive	Q1-Q12 KOI Table	2014
691	K	Transit	NASA Exoplanet Archive	Q1-Q17 DR25 KOI Table	2014
693	K	Transit	NASA Exoplanet Archive	Q1-Q16 KOI Table	2014

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Kepler-197 d	Exoplanet	0.004347″	11.78
Kepler-197 b	Exoplanet	0.004347″	11.78
Kepler-197 c	Exoplanet	0.004347″	11.78
Kepler-197	HighPM*	0.8324″	11.78
Kepler-197B	HighPM*	6.433″	11.85
2MASS J19405341+5033216	Star	14.54″	—
2MASS J19405650+5033312	Star	20.51″	—
2MASS J19410148+5032042	Star	111.8″	—
TYC 3564-2971-1	Star	177″	10.81
2MASS J19405938+5036388	Star	191.6″	—
TYC 3564-2949-1	**	197.4″	10.63

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-197-e · Registry entry updated 2026-08-14.