Registry · exoplanet

HD 38529 c

Exoplanet 85 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: 05h 46m 34.83s
Declination: +01° 10′ 03.3″
Galactic l, b: 204.32, -13.84
Magnitude V: 5.928
Distance: 42.354 pc

Also known as

1 identifiers

HD 38529c

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 38529 · G8III/IV
Discovery	Radial Velocity, 2000 · Multiple Observatories
Orbital period	2,127.61 d
Semi-major axis	3.226 au
Eccentricity	0.357
Radius	12.5 R⊕ · 1.11 R♃
Mass	3,299.1 M⊕ · 10.38 M♃
Density	9.28 g/cm³
Equilibrium temperature	258.56 K
System distance	42.354 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 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3,299.059	M_earth	± 325.8	Radial Velocity	NASA Exoplanet Archive	Feng et al. 2022	2022
4,198.513	M_earth	± 31.78	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
5,720.911	M_earth	± 953.5	Radial Velocity	NASA Exoplanet Archive	Xuan et al. 2020	2020
4,128.612	M_earth	± 47.67	Radial Velocity	NASA Exoplanet Archive	Luhn et al. 2019	2019
4,204.891	M_earth	± 34.96	Radial Velocity	NASA Exoplanet Archive	Bryan et al. 2016	2016
4,252.39	M_earth	± 124	Radial Velocity	NASA Exoplanet Archive	Wittenmyer et al. 2009	2009
4,163.573	M_earth	± 349.6	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2009	2009
4,195.2	M_earth	± 349.6	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006

Orbital period 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2,127.606	d	± 1.494	Radial Velocity	NASA Exoplanet Archive	Feng et al. 2022	2022
2,133.3	d	± 1.5	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
2,135	d	± 2	Radial Velocity	NASA Exoplanet Archive	Xuan et al. 2020	2020
2,136.1	d	± 3.1	Radial Velocity	NASA Exoplanet Archive	Luhn et al. 2019	2019
2,132.4	d	± 3.2	Radial Velocity	NASA Exoplanet Archive	Bryan et al. 2016	2016
2,140.2	d	± 5.7	Radial Velocity	NASA Exoplanet Archive	Wittenmyer et al. 2009	2009
2,146.1	d	± 5.5	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2009	2009
2,165	d	± 14	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006

Semi-major axis 6 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.226	au	± 0.131	Radial Velocity	NASA Exoplanet Archive	Feng et al. 2022	2022
3.7365	au	± 0.0099	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
3.64	au	± 0.16	Radial Velocity	NASA Exoplanet Archive	Luhn et al. 2019	2019
3.712	au	± 0.048	Radial Velocity	NASA Exoplanet Archive	Wittenmyer et al. 2009	2009
3.72	au	± 0.21	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2009	2009
3.74	au	± 0.22	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006

Eccentricity 8 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.357	± 0.005	Radial Velocity	NASA Exoplanet Archive	Feng et al. 2022	2022
0.3545	± 0.0048	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.34	± 0.01	Radial Velocity	NASA Exoplanet Archive	Xuan et al. 2020	2020
0.3407	± 0.0069	Radial Velocity	NASA Exoplanet Archive	Luhn et al. 2019	2019
0.342	± 0.007	Radial Velocity	NASA Exoplanet Archive	Bryan et al. 2016	2016
0.341	± 0.005	Radial Velocity	NASA Exoplanet Archive	Wittenmyer et al. 2009	2009
0.3551	± 0.0074	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2009	2009
0.3506	± 0.0085	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2006	2006

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 38529 b	Exoplanet	0″	5.928
HD 38529	HighPM*	2.501″	—
UCAC2 32153128	Star	130.1″	—
2MASS J05464411+0106148	Star	267.5″	—
HD 38529B	HighPM*	283.9″	—
UCAC4 457-012392	HighPM*	292.2″	12.14
2MASS J05460691+0108169	Star	432″	—
2MASS J05470345+0112585	Star	463.6″	—
2MASS J05470702+0107147	Star	511.5″	—
2MASS J05470145+0115508	Star	529.2″	—

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-38529-c · Registry entry updated 2026-08-14.