Registry · deep sky

HD 209458

Star SIMBAD * F9V 1,200 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: 22h 03m 10.77s
Declination: +18° 53′ 03.5″
Galactic l, b: 76.753, -28.53
Magnitude V: 7.63
Parallax: 20.769 mas
Redshift z: -4.918e-05
Radial velocity: -14.743 km/s
Proper motion: 29.77, -17.98 mas/yr

Also known as

22 identifiers

2MASS J22031077+1853036AG+18 2243AGKR 19726BD+18 4917Gaia DR1 1779546753373081600Gaia DR2 1779546757669063552Gaia DR3 1779546757669063552GEN# +1.00209458GSC 01688-01821HD 209458HIC 108859HIP 108859PPM 141002SAO 107623SKY# 42008SPOCS 953TIC 420814525TYC 1688-1821-1uvby98 100209458V* V376 PegYZ 18 9012TOI-5972

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 12 values

Value	Unit	Uncertainty	Source	Reference	Year
1.069175	M_sun	± 0.04797	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
1.13	M_sun	± 0.1782	NASA Exoplanet Archive	TICv8	2017
1.23	M_sun	± 0.09	NASA Exoplanet Archive	Stassun et al. 2017	2017
1.119	M_sun	± 0.033	NASA Exoplanet Archive	Bonomo et al. 2017	2017
1.26	M_sun	± 0.15	NASA Exoplanet Archive	del Burgo & Allende Prieto 2016	2016
1	M_sun	± 0.22	NASA Exoplanet Archive	Boyajian et al. 2015	2015
1.148	M_sun	± 0.04	NASA Exoplanet Archive	Southworth 2010	2010
1.119	M_sun	± 0.033	NASA Exoplanet Archive	Torres et al. 2008	2008
1.101	M_sun	± 0.066	NASA Exoplanet Archive	Knutson et al. 2007	2007
1.06	M_sun	± 0.03	NASA Exoplanet Archive	Cody & Sasselov 2002	2002
1.1	M_sun		NASA Exoplanet Archive	Charbonneau et al. 2000	2000
1.03	M_sun		NASA Exoplanet Archive	Henry et al. 2000	2000

Radius 14 values

Value	Unit	Uncertainty	Source	Reference	Year
1.199976	R_sun	± 0.0282	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
1.18655	R_sun	± 0.04451	NASA Exoplanet Archive	TICv8	2017
1.19	R_sun	± 0.02	NASA Exoplanet Archive	Stassun et al. 2017	2017
1.155	R_sun	± 0.014	NASA Exoplanet Archive	Bonomo et al. 2017	2017
1.2	R_sun	± 0.05	NASA Exoplanet Archive	del Burgo & Allende Prieto 2016	2016
1.203	R_sun	± 0.061	NASA Exoplanet Archive	Boyajian et al. 2015	2015
1.162	R_sun	± 0.014	NASA Exoplanet Archive	Southworth 2010	2010
1.155	R_sun	± 0.014	NASA Exoplanet Archive	Torres et al. 2008	2008
1.125	R_sun	± 0.02	NASA Exoplanet Archive	Knutson et al. 2007	2007
1.18	R_sun	± 0.07	NASA Exoplanet Archive	Cody & Sasselov 2002	2002
1.146	R_sun	± 0.05	NASA Exoplanet Archive	Brown et al. 2001	2001
1.1	R_sun		NASA Exoplanet Archive	Charbonneau et al. 2000	2000

Show the remaining 2

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.15	R_sun			NASA Exoplanet Archive	Henry et al. 2000	2000
1.19	R_sun	± 0.05		NASA Exoplanet Archive	ExoFOP	1999

Effective temperature 12 values

Value	Unit	Uncertainty	Source	Reference	Year
6,026.35	K	± 96.9	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
6,052	K	± 102	NASA Exoplanet Archive	TICv8	2017
6,091	K	± 10	NASA Exoplanet Archive	Stassun et al. 2017	2017
6,065	K	± 50	NASA Exoplanet Archive	Bonomo et al. 2017	2017
6,071	K	± 20	NASA Exoplanet Archive	del Burgo & Allende Prieto 2016	2016
6,092	K	± 103	NASA Exoplanet Archive	Boyajian et al. 2015	2015
6,117	K	± 50	NASA Exoplanet Archive	Southworth 2010	2010
6,065	K	± 50	NASA Exoplanet Archive	Torres et al. 2008	2008
5,998	K	± 55	NASA Exoplanet Archive	Cody & Sasselov 2002	2002
6,000	K		NASA Exoplanet Archive	Charbonneau et al. 2000	2000
6,025	K		NASA Exoplanet Archive	Henry et al. 2000	2000
6,052	K	± 100.6	NASA Exoplanet Archive	ExoFOP	1999

Related objects

Object	Type	Relation
HD 209458 b	Exoplanet	host

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 209458	Star	0.539″	—
HD 209458 b	Exoplanet	0.539″	7.65
XBS J220320.8+184930	Seyfert1	258.2″	—
GALEX J220330.7+185250	WhiteDwarf	285.3″	—
BoRG 2203+1851 1061	Galaxy	359.5″	—
SDSS J220245.87+185032.0	QSO	384.5″	—
SDSS J220241.65+185458.3	QSO	428.9″	—
BD+18 4914	delSctV*	473.1″	10.63
SDSS J220340.63+184753.6	QSO	525.1″	—

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-209458-1470257 · Registry entry updated 2026-08-14.