Registry · deep sky

51 Eri

Star F0 IV

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: 04h 37m 36.18s
Declination: −02° 28′ 25.8″
Galactic l, b: 198.61, -30.66
Distance: 29.758 pc

Published measurements

3 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 4 values

Value	Unit	Uncertainty	Source	Reference	Year
1.55	M_sun	± 0.006	NASA Exoplanet Archive	Elliott et al. 2024	2024
1.75	M_sun	± 0.05	NASA Exoplanet Archive	Dupuy et al. 2022	2022
1.65	M_sun	± 0.3569	NASA Exoplanet Archive	TICv8	2019
1.75	M_sun	± 0.05	NASA Exoplanet Archive	Macintosh et al. 2015	2015

Radius 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.45	R_sun	± 0.02		NASA Exoplanet Archive	Elliott et al. 2024	2024
1.48726	R_sun	± 0.04543		NASA Exoplanet Archive	TICv8	2019

Effective temperature 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
7,422	K	± 58		NASA Exoplanet Archive	Elliott et al. 2024	2024
7,295	K	± 120.1		NASA Exoplanet Archive	TICv8	2019

Related objects

Object	Type	Relation
51 Eri b	Exoplanet	host

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
51 Eri b	Exoplanet	0″	5.211
* 51 Eri	HighPM*	1.205″	5.209
* 51 Eri b	Planet	1.205″	—
UCAC2 30947523	Star	28.69″	11.8
StKM 1-497	TTauri*	66.02″	10.59
BD-02 961	Star	235.5″	8.89
UCAC2 30947529	Variable*	259.1″	12.42
Z 393-51	Seyfert2	532.6″	—

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/51-eri · Registry entry updated 2026-08-14.