Registry · exoplanet

HD 219134 c

Exoplanet 75 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: 23h 13m 20.93s
Declination: +57° 10′ 10.7″
Galactic l, b: 109.91, -3.201
Magnitude V: 5.569
Distance: 6.5313 pc

Also known as

1 identifiers

HD 219134c

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 219134 · K3V
Discovery	Radial Velocity, 2015 · Roque de los Muchachos Observatory
Orbital period	6.76458 d
Semi-major axis	0.0653 au
Eccentricity	0.062
Radius	1.511 R⊕ · 0.1348 R♃
Mass	4.36 M⊕ · 0.01372 M♃
Density	6.95 g/cm³
Equilibrium temperature	782 K
System distance	6.5313 pc

Published measurements

6 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

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.12	M_earth	± 0.42	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
3.559678	M_earth	± 0.445	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
4.36	M_earth	± 0.22	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
2.78	M_earth	± 0.61	Radial Velocity	NASA Exoplanet Archive	Motalebi et al. 2015	2015
3.49613	M_earth	± 0.6357	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2015	2015

Radius 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.507	R_earth	± 0.074	Radial Velocity	NASA Exoplanet Archive	Seager et al. 2021	2021
1.511	R_earth	± 0.047	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
1.39215	R_earth	± 0.1128	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2015

Orbital period 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
6.76379	d	± 0.00059	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
6.765149	d	± 3.30e-05	Radial Velocity	NASA Exoplanet Archive	Seager et al. 2021	2021
6.76406	d	± 0.00093	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
6.76458	d	± 0.00033	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
6.767	d	± 0.004	Radial Velocity	NASA Exoplanet Archive	Motalebi et al. 2015	2015
6.7635	d	± 0.0006	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2015	2015
6.76504	d	± 7.40e-06	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2015

Semi-major axis 6 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.0618	au	± 0.0015	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.0652	au	± 0.001	Radial Velocity	NASA Exoplanet Archive	Seager et al. 2021	2021
0.06466	au	± 0.00074	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.0653	au	± 0.0008	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
0.064	au	± 0.001	Radial Velocity	NASA Exoplanet Archive	Motalebi et al. 2015	2015
0.064816	au	± 4.00e-06	Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2015	2015

Eccentricity 5 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.18	± 0.13	Radial Velocity	NASA Exoplanet Archive	Harada et al. 2025	2025
0.16	± 0.12	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.062	± 0.039	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
0.08	± 0.45	Radial Velocity	NASA Exoplanet Archive	Motalebi et al. 2015	2015
0		Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2015	2015

Equilibrium temperature 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
715.9	K	± 5.8	Radial Velocity	NASA Exoplanet Archive	Seager et al. 2021	2021
782	K	± 6	Radial Velocity	NASA Exoplanet Archive	Gillon et al. 2017	2017
789	K		Radial Velocity	NASA Exoplanet Archive	ExoFOP	2015

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 219134 b	Exoplanet	0″	5.569
HD 219134 f	Exoplanet	0″	5.569
HD 219134 g	Exoplanet	0″	5.569
HD 219134 d	Exoplanet	0″	5.569
HD 219134 h	Exoplanet	0″	5.569
HD 219134	HighPM*	32.48″	5.57
HD 219134e	Planet	32.48″	—
NSV 14464	AGB* Candidate	271.4″	10.86
BD+56 2967	Star	297.6″	9.78
2MASS J23122809+5705518	HorBranch*	501.9″	—

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-219134-c · Registry entry updated 2026-08-14.