Registry · exoplanet

HD 97658 b

Exoplanet 242 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: 11h 14m 33.04s
Declination: +25° 42′ 38.1″
Galactic l, b: 211.16, 68.29
Magnitude V: 7.76
Distance: 21.562 pc

Also known as

1 identifiers

HD 97658b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 97658 · K1V
Discovery	Radial Velocity, 2010 · W. M. Keck Observatory
Orbital period	9.48971 d
Semi-major axis	0.0805 au
Eccentricity	0.05
Radius	2.12 R⊕ · 0.1891 R♃
Mass	8.3 M⊕ · 0.02611 M♃
Density	4.8 g/cm³
Equilibrium temperature	751 K
System distance	21.562 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 9 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
7.62	M_earth	± 0.42	Radial Velocity	NASA Exoplanet Archive	Maxted et al. 2022	2022
8.3	M_earth	± 1.1	Radial Velocity	NASA Exoplanet Archive	Ellis et al. 2021	2021
7.850362	M_earth	± 0.5721	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
7.81	M_earth	± 0.55	Radial Velocity	NASA Exoplanet Archive	Guo et al. 2020	2020
8.882627	M_earth	± 1.231	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
7.55	M_earth	± 0.83	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
8.2	M_earth	± 1.2	Radial Velocity	NASA Exoplanet Archive	Kammer et al. 2014	2014
7.86	M_earth	± 0.73	Radial Velocity	NASA Exoplanet Archive	Dragomir et al. 2013	2013
8.26323	M_earth	± 1.271	Radial Velocity	NASA Exoplanet Archive	Howard et al. 2011	2011

Radius 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.293	R_earth	± 0.07	Radial Velocity	NASA Exoplanet Archive	Maxted et al. 2022	2022
2.12	R_earth	± 0.06	Radial Velocity	NASA Exoplanet Archive	Ellis et al. 2021	2021
2.303	R_earth	± 0.052	Radial Velocity	NASA Exoplanet Archive	Guo et al. 2020	2020
2.35389	R_earth	± 0.1121	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
2.247	R_earth	± 0.098	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
2.341	R_earth	± 0.17	Radial Velocity	NASA Exoplanet Archive	Dragomir et al. 2013	2013
2.4304	R_earth	± 0.1472	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2010

Orbital period 13 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
9.489304	d	± 1.60e-06	Radial Velocity	NASA Exoplanet Archive	Kokori et al. 2023	2023
9.489307	d	± 4.80e-06	Radial Velocity	NASA Exoplanet Archive	Ivshina & Winn 2022	2022
9.489295	d		Radial Velocity	NASA Exoplanet Archive	Maxted et al. 2022	2022
9.489712	d	± 8.00e-07	Radial Velocity	NASA Exoplanet Archive	Ellis et al. 2021	2021
9.48908	d	± 0.00071	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
9.489295	d	± 5.00e-06	Radial Velocity	NASA Exoplanet Archive	Guo et al. 2020	2020
9.4909	d	± 0.0016	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
9.4903	d	± 0.0016	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
9.4957	d	± 0.0022	Radial Velocity	NASA Exoplanet Archive	Kammer et al. 2014	2014
9.489264	d	± 6.40e-05	Radial Velocity	NASA Exoplanet Archive	Knutson et al. 2014	2014
9.4909	d	± 0.0016	Radial Velocity	NASA Exoplanet Archive	Dragomir et al. 2013	2013
9.494	d	± 0.005	Radial Velocity	NASA Exoplanet Archive	Howard et al. 2011	2011

Show the remaining 1

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
9.489323	d	± 3.57e-05	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2010

Semi-major axis 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.0805	au	± 0.001	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.08	au	± 0.0017	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
0.0796	au	± 0.0011	Radial Velocity	NASA Exoplanet Archive	Dragomir et al. 2013	2013
0.0831	au	± 0.0011	Radial Velocity	NASA Exoplanet Archive	Howard et al. 2011	2011

Eccentricity 7 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.05	± 0.04	Radial Velocity	NASA Exoplanet Archive	Ellis et al. 2021	2021
0.063	± 0.061	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.03	± 0.034	Radial Velocity	NASA Exoplanet Archive	Guo et al. 2020	2020
0.06	± 0.05	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
0.078	± 0.057	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
0.13	± 0.07	Radial Velocity	NASA Exoplanet Archive	Kammer et al. 2014	2014
0.063	± 0.059	Radial Velocity	NASA Exoplanet Archive	Dragomir et al. 2013	2013

Equilibrium temperature 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
751	K	± 12	Radial Velocity	NASA Exoplanet Archive	Ellis et al. 2021	2021
809	K	± 103	Radial Velocity	NASA Exoplanet Archive	Guo et al. 2020	2020
757	K	± 12	Radial Velocity	NASA Exoplanet Archive	Van Grootel et al. 2014	2014
708	K		Radial Velocity	NASA Exoplanet Archive	ExoFOP	2010

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 97658	HighPM*	1.829″	7.714
LEDA 1746956	Galaxy	235.4″	—
LEDA 1747312	Galaxy	407.8″	—
GALEX J111432.6+253548	WhiteDwarf	409″	—
SDSS J111439.52+255100.8	QSO	510.3″	—

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/hd-97658-b · Registry entry updated 2026-08-14.