Registry · exoplanet

HD 69830 c

Exoplanet 67 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: 08h 18m 24.24s
Declination: −12° 38′ 11.1″
Galactic l, b: 234.57, 12.82
Magnitude V: 5.96
Distance: 12.559 pc

Also known as

1 identifiers

HD 69830c

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 69830 · G8:V
Discovery	Radial Velocity, 2006 · La Silla Observatory
Orbital period	31.56 d
Semi-major axis	0.186 au
Eccentricity	0.13
Radius	3.46 R⊕ · 0.309 R♃
Mass	11.8 M⊕ · 0.0371 M♃
Density	1.57 g/cm³
Equilibrium temperature	567.04 K
System distance	12.559 pc

Published measurements

4 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 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
11.65	M_earth	± 0.89	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
9.852681	M_earth	± 0.9853	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
11.8	M_earth		Radial Velocity	NASA Exoplanet Archive	Lovis et al. 2006	2006

Orbital period 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
31.6131	d	± 0.0088	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
31.613	d	± 0.013	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
31.56	d	± 0.04	Radial Velocity	NASA Exoplanet Archive	Lovis et al. 2006	2006

Semi-major axis 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.193	au	± 0.0033	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.1882	au	± 0.0029	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.186	au		Radial Velocity	NASA Exoplanet Archive	Lovis et al. 2006	2006

Eccentricity 3 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.052	± 0.058	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.114	± 0.096	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.13	± 0.06	Radial Velocity	NASA Exoplanet Archive	Lovis et al. 2006	2006

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 69830 d	Exoplanet	0″	5.96
HD 69830 b	Exoplanet	0″	5.96
HD 69830	HighPM*	15.91″	5.95
TYC 5435-1550-1	Star	66.82″	11.4
LEDA 948758	EmissionG	329.9″	—
2MASS J08175897-1242025	RGB*	436.2″	—

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/hd-69830-c · Registry entry updated 2026-08-14.