UPSA Object Registry
Registry · exoplanet

HD 82943 b

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
09h 34m 50.74s
Declination
−12° 07′ 49.1″
Galactic l, b
245.84, 28.25
Magnitude V
6.55
Distance
27.59 pc

Also known as

1 identifiers

HD 82943b

Planet

NASA Exoplanet Archive, composite parameters
Host starHD 82943 · F9VFe+0.5
DiscoveryRadial Velocity, 2003 · La Silla Observatory
Orbital period441.47 d
Semi-major axis1.1831 au
Eccentricity0.162
Radius13.5 R⊕ · 1.2 R♃
Mass534.25 M⊕ · 1.681 M♃
Density1.19 g/cm³
Equilibrium temperature286.13 K
System distance27.59 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 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
489.1379 M_earth ± 16.84 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
476.725 M_earth ± 21.61 Radial Velocity NASA Exoplanet Archive Liu et al. 2014 2014
534.25 M_earth ± 8.899 Radial Velocity NASA Exoplanet Archive Baluev & Beaugé 2014 2014
556 M_earth ± 0 Radial Velocity NASA Exoplanet Archive Lee et al. 2006 2006
584.8072 M_earth Radial Velocity NASA Exoplanet Archive Mayor et al. 2004 2004

Orbital period 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
441.93 d ± 0.43 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
442.4 d ± 3.1 Radial Velocity NASA Exoplanet Archive Liu et al. 2014 2014
441.47 d ± 0.35 Radial Velocity NASA Exoplanet Archive Baluev & Beaugé 2014 2014
441.2 d Radial Velocity NASA Exoplanet Archive Lee et al. 2006 2006
435.1 d ± 1.4 Radial Velocity NASA Exoplanet Archive Mayor et al. 2004 2004

Semi-major axis 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.189 au ± 0.017 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
1.151 au ± 0.0064 Radial Velocity NASA Exoplanet Archive Liu et al. 2014 2014
1.18306 au ± 0.00062 Radial Velocity NASA Exoplanet Archive Baluev & Beaugé 2014 2014
1.18 au Radial Velocity NASA Exoplanet Archive Lee et al. 2006 2006
1.18 au Radial Velocity NASA Exoplanet Archive Mayor et al. 2004 2004

Eccentricity 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.142 ± 0.042 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
0.203 ± 0.052 Radial Velocity NASA Exoplanet Archive Liu et al. 2014 2014
0.162 ± 0.036 Radial Velocity NASA Exoplanet Archive Baluev & Beaugé 2014 2014
0.219 Radial Velocity NASA Exoplanet Archive Lee et al. 2006 2006
0.18 ± 0.04 Radial Velocity NASA Exoplanet Archive Mayor et al. 2004 2004

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
HD 82943 c Exoplanet 0.003074″ 6.55
HD 82943 HighPM* 2.702″ 6.53
HD 82943d Planet Candidate 2.702″ —
HD 82974A Star 217.9″ 10.54
WT 1651 WhiteDwarf 343.5″ 16.8
TYC 5468-464-1 Star 376.9″ 10.95
HD 83009 Star 398″ 10.34

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/hd-82943-b · Registry entry updated 2026-08-14.