Registry · exoplanet

61 Vir 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: 13h 18m 23.15s
Declination: −18° 18′ 56.8″
Galactic l, b: 311.85, 44.09
Magnitude V: 4.696
Distance: 8.5033 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	61 Vir · G5 V
Discovery	Radial Velocity, 2009 · Multiple Observatories
Orbital period	123.01 d
Semi-major axis	0.476 au
Eccentricity	0.35
Radius	5.11 R⊕ · 0.456 R♃
Mass	22.9 M⊕ · 0.072 M♃
Density	0.943 g/cm³
Equilibrium temperature	382.51 K
System distance	8.5033 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 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
10.92	M_earth	± 1	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
22.9	M_earth	± 2.6	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2010	2010

Orbital period 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
123.15	d	± 0.15	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
123.01	d	± 0.55	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2010	2010

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.4677	au	± 0.0068	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.476	au	± 0.001	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2010	2010

Eccentricity 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.105		± 0.1	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.35		± 0.09	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2010	2010

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
61 Vir c	Exoplanet	0″	4.696
61 Vir	Star	0″	—
61 Vir b	Exoplanet	0″	4.696
* 61 Vir c	Planet	23.39″	—
* 61 Vir	HighPM*	23.39″	4.74
* 61 Vir b	Planet	23.39″	—
* 61 Vir d	Planet	23.39″	—
HD 115559	**	216.6″	9.2
TYC 6116-386-1	Star	388.2″	10.65

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/61-vir-d · Registry entry updated 2026-08-14.