UPSA Object Registry
Registry · exoplanet

GJ 876 d

Exoplanet
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
22h 53m 17.75s
Declination
−14° 15′ 59.7″
Galactic l, b
52.003, -59.64
Magnitude V
10.16
Distance
4.6752 pc

Planet

NASA Exoplanet Archive, composite parameters
Host starGJ 876 · M2.5V
DiscoveryRadial Velocity, 2005 · W. M. Keck Observatory
Orbital period1.93778 d
Semi-major axis0.020807 au
Eccentricity0.207
Radius2.51 R⊕ · 0.224 R♃
Mass6.83 M⊕ · 0.021 M♃
Density2.37 g/cm³
Equilibrium temperature603.09 K
System distance4.6752 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 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
5.848043 M_earth ± 0.5085 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
8.061437 M_earth ± 0.315 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
7.49 M_earth ± 0.43 Radial Velocity NASA Exoplanet Archive Nelson et al. 2016 2016
5.85 M_earth ± 0.39 Radial Velocity NASA Exoplanet Archive Kammer et al. 2014 2014
7.4 M_earth Radial Velocity NASA Exoplanet Archive Correia et al. 2010 2010
6.83 M_earth ± 0.4 Radial Velocity NASA Exoplanet Archive Rivera et al. 2010 2010
7.53 M_earth ± 0.7 Radial Velocity NASA Exoplanet Archive Rivera et al. 2005 2005

Orbital period 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.937916 d ± 2.70e-05 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
1.938 d ± 0.001 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
1.937848 d ± 2.40e-05 Radial Velocity NASA Exoplanet Archive Nelson et al. 2016 2016
1.93778 d ± 2.00e-05 Radial Velocity NASA Exoplanet Archive Kammer et al. 2014 2014
1.93785 d ± 2.00e-05 Radial Velocity NASA Exoplanet Archive Correia et al. 2010 2010
1.93778 d ± 2.00e-05 Radial Velocity NASA Exoplanet Archive Rivera et al. 2010 2010
1.93774 d ± 6.00e-05 Radial Velocity NASA Exoplanet Archive Rivera et al. 2005 2005

Semi-major axis 6 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.02183 au ± 0.00018 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
0.021 au ± 0.001 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
0.02183911 au ± 1.90e-07 Radial Velocity NASA Exoplanet Archive Nelson et al. 2016 2016
0.021 au Radial Velocity NASA Exoplanet Archive Correia et al. 2010 2010
0.02080665 au ± 1.50e-07 Radial Velocity NASA Exoplanet Archive Rivera et al. 2010 2010
0.0208067 au ± 4.00e-07 Radial Velocity NASA Exoplanet Archive Rivera et al. 2005 2005

Eccentricity 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.273 ± 0.093 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
0.082 ± 0.043 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
0.119 ± 0.05 Radial Velocity NASA Exoplanet Archive Nelson et al. 2016 2016
0.207 ± 0.055 Radial Velocity NASA Exoplanet Archive Kammer et al. 2014 2014
0.124 ± 0.032 Radial Velocity NASA Exoplanet Archive Correia et al. 2010 2010
0.207 ± 0.055 Radial Velocity NASA Exoplanet Archive Rivera et al. 2010 2010
0 Radial Velocity NASA Exoplanet Archive Rivera et al. 2005 2005

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
GJ 876 b Exoplanet 0″ 10.16
GJ 876 Star 0″ —
GJ 876 e Exoplanet 0″ 10.16
GJ 876 c Exoplanet 0″ 10.16
BD-15 6290e Planet 18.15″ —
BD-15 6290c Planet 18.15″ —
BD-15 6290d Planet 18.15″ —
BD-15 6290 ** 18.15″ 10.19
BD-15 6290b Planet 18.15″ —
TYC 5819-1046-1 HighPM* 366.1″ 11.02
UCAC2 26801731 Star 478.1″ 11.44

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/gj-876-d · Registry entry updated 2026-08-14.