UPSA Object Registry
Registry · exoplanet

GJ 581 e

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
15h 19m 25.55s
Declination
−07° 43′ 21.7″
Galactic l, b
354.07, 40.02
Magnitude V
10.57
Distance
6.2981 pc

Planet

NASA Exoplanet Archive, composite parameters
Host starGJ 581 · M3.0 V
DiscoveryRadial Velocity, 2009 · La Silla Observatory
Orbital period3.1481 d
Semi-major axis0.02799 au
Eccentricity0.012
Radius1.38 R⊕ · 0.123 R♃
Mass2.48 M⊕ · 0.007803 M♃
Density5.19 g/cm³
Equilibrium temperature554.37 K
System distance6.2981 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
2.48 M_earth ± 0.7 Radial Velocity NASA Exoplanet Archive von Stauffenberg et al. 2024 2024
1.657 M_earth ± 0.24 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
1.7 M_earth ± 0.2 Radial Velocity NASA Exoplanet Archive Robertson et al. 2014 2014
1.7 M_earth ± 0.2 Radial Velocity NASA Exoplanet Archive Vogt et al. 2010 2010
1.94 M_earth Radial Velocity NASA Exoplanet Archive Mayor et al. 2009 2009

Orbital period 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3.1481 d ± 0.0004 Radial Velocity NASA Exoplanet Archive von Stauffenberg et al. 2024 2024
3.153 d ± 0.001 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
3.149 d ± 0.0002 Radial Velocity NASA Exoplanet Archive Robertson et al. 2014 2014
3.14867 d ± 0.00039 Radial Velocity NASA Exoplanet Archive Vogt et al. 2010 2010
3.14942 d ± 0.00045 Radial Velocity NASA Exoplanet Archive Mayor et al. 2009 2009

Semi-major axis 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.02799 au ± 0.0003 Radial Velocity NASA Exoplanet Archive von Stauffenberg et al. 2024 2024
0.029 au ± 0.001 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
0.02815 au ± 6.00e-05 Radial Velocity NASA Exoplanet Archive Robertson et al. 2014 2014
0.0284533 au ± 2.30e-06 Radial Velocity NASA Exoplanet Archive Vogt et al. 2010 2010
0.03 au Radial Velocity NASA Exoplanet Archive Mayor et al. 2009 2009

Eccentricity 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.012 ± 0.015 Radial Velocity NASA Exoplanet Archive von Stauffenberg et al. 2024 2024
0.125 ± 0.078 Radial Velocity NASA Exoplanet Archive Trifonov et al. 2018 2018
0 ± 0.06 Radial Velocity NASA Exoplanet Archive Robertson et al. 2014 2014
0 Radial Velocity NASA Exoplanet Archive Vogt et al. 2010 2010
0 Radial Velocity NASA Exoplanet Archive Mayor et al. 2009 2009

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
GJ 581 b Exoplanet 0″ 10.57
GJ 581 Star 0″ —
GJ 581 c Exoplanet 0″ 10.57
BD-07 4003c Planet 18.99″ —
BD-07 4003d Planet 18.99″ —
BD-07 4003g Planet Candidate 18.99″ —
BD-07 4003e Planet 18.99″ —
BD-07 4003f Planet Candidate 18.99″ —
BD-07 4003 BYDraV* 18.99″ 10.56
BD-07 4003b Planet 18.99″ —
LP 682-27 HighPM* 349.5″ 13.24

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-581-e · Registry entry updated 2026-08-14.