Registry · deep sky

HD 191939

MainSequence* SIMBAD MS* G0 66 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: 20h 08m 05.76s
Declination: +66° 51′ 02.1″
Galactic l, b: 99.987, 17.72
Parallax: 18.697 mas
Redshift z: -3.091e-05
Radial velocity: -9.266 km/s
Proper motion: 150.2, -63.99 mas/yr

Also known as

19 identifiers

2MASS J20080574+6651019AG+66 944ASCC 92847BD+66 1273Gaia DR1 2248126310977227520Gaia DR2 2248126315275354496Gaia DR3 2248126315275354496GC 27984GSC 04244-00964HD 191939HIC 99175HIP 99175LSPM J2008+6651PPM 22001SAO 18731TIC 269701147TYC 4244-964-1TOI-1339USNO-B1.0 1568-00210024

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 5 values

Value	Unit	Uncertainty	Source	Reference	Year
0.81	M_sun	± 0.04	NASA Exoplanet Archive	Lubin et al. 2024	2024
0.8222	M_sun	± 0.0268	NASA Exoplanet Archive	MacDougall et al. 2023	2023
0.81	M_sun	± 0.04	NASA Exoplanet Archive	Lubin et al. 2022	2022
0.95	M_sun	± 0.1385	NASA Exoplanet Archive	TICv8	2021
0.92	M_sun	± 0.06	NASA Exoplanet Archive	Badenas-Agusti et al. 2020	2020

Radius 7 values

Value	Unit	Uncertainty	Source	Reference	Year
0.94	R_sun	± 0.02	NASA Exoplanet Archive	Lubin et al. 2024	2024
0.934	R_sun	± 0.0161	NASA Exoplanet Archive	MacDougall et al. 2023	2023
0.94	R_sun	± 0.02	NASA Exoplanet Archive	Lubin et al. 2022	2022
0.920435	R_sun	± 0.05065	NASA Exoplanet Archive	TICv8	2021
0.92	R_sun	± 0.05	NASA Exoplanet Archive	ExoFOP	2020
0.945	R_sun	± 0.021	NASA Exoplanet Archive	Badenas-Agusti et al. 2020	2020
0.920435	R_sun	± 0.04631	NASA Exoplanet Archive	ExoFOP	2020

Effective temperature 6 values

Value	Unit	Uncertainty	Source	Reference	Year
5,348	K	± 100	NASA Exoplanet Archive	Lubin et al. 2024	2024
5,385	K	± 69	NASA Exoplanet Archive	MacDougall et al. 2023	2023
5,348	K	± 100	NASA Exoplanet Archive	Lubin et al. 2022	2022
5,461	K	± 109.6	NASA Exoplanet Archive	TICv8	2021
5,555.7	K	± 313.7	NASA Exoplanet Archive	ExoFOP	2020
5,427	K	± 50	NASA Exoplanet Archive	Badenas-Agusti et al. 2020	2020

Related objects

Object	Type	Relation
HD 191939 b	Exoplanet	host
HD 191939 c	Exoplanet	host
HD 191939 d	Exoplanet	host
HD 191939 e	Exoplanet	host
HD 191939 f	Exoplanet	host
HD 191939 g	Exoplanet	host

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
TOI-1339.03	Planet Candidate	0″	—
HD 191939 d	Exoplanet	2.53″	8.97
HD 191939 e	Exoplanet	2.53″	8.97
HD 191939 f	Exoplanet	2.53″	8.97
HD 191939 g	Exoplanet	2.53″	8.97
HD 191939 b	Exoplanet	2.53″	8.97
HD 191939 c	Exoplanet	2.53″	8.97
ZTF J200713.43+665234.9	RRLyrae	322″	—

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-191939-263461 · Registry entry updated 2026-08-14.