Registry · exoplanet

HD 46375 b

Exoplanet 77 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: 06h 33m 12.74s
Declination: +05° 27′ 45.0″
Galactic l, b: 205.99, -1.546
Magnitude V: 7.91
Distance: 29.553 pc

Also known as

1 identifiers

HD 46375b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 46375 · G9V
Discovery	Radial Velocity, 2000 · W. M. Keck Observatory
Orbital period	3.02357 d
Semi-major axis	0.0398 au
Eccentricity	0.063
Radius	10 R⊕ · 0.894 R♃
Mass	71.8 M⊕ · 0.226 M♃
Density	0.395 g/cm³
Equilibrium temperature	1,221.4 K
System distance	29.553 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 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
72.01992	M_earth	± 2.829	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
71.8	M_earth	± 6	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006
79.1	M_earth	± 10	Radial Velocity	NASA Exoplanet Archive	Marcy et al. 2000	2000

Orbital period 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.023495	d	± 1.30e-05	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
3.023573	d	± 6.50e-05	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006
3.024	d	± 0.0005	Radial Velocity	NASA Exoplanet Archive	Marcy et al. 2000	2000

Semi-major axis 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.03998	au	± 0.00059	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.0398	au	± 0.0023	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006
0.041	au		Radial Velocity	NASA Exoplanet Archive	Marcy et al. 2000	2000

Eccentricity 3 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.063	± 0.024	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.063	± 0.026	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006
0.04	± 0.04	Radial Velocity	NASA Exoplanet Archive	Marcy et al. 2000	2000

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 46375	HighPM*	2.292″	7.84
HD 46375B	HighPM*	12.65″	11.8
HD 46324	Star	353.8″	7.96
UCAC4 478-022392	Star	419.2″	—
2MASS J06330036+0534475	RGB*	461.1″	—
2MASS J06325835+0534593	RGB*	484.5″	—

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/hd-46375-b · Registry entry updated 2026-08-14.