Registry · exoplanet

HD 197037 b

Exoplanet 13 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 39m 32.87s
Declination: +42° 14′ 51.3″
Galactic l, b: 81.676, 0.4125
Magnitude V: 6.823
Distance: 33.194 pc

Also known as

1 identifiers

HD 197037b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 197037 · G0
Discovery	Radial Velocity, 2012 · McDonald Observatory
Orbital period	1,035.7 d
Semi-major axis	2.07 au
Eccentricity	0.22
Radius	13.9 R⊕ · 1.24 R♃
Mass	251 M⊕ · 0.79 M♃
Density	0.514 g/cm³
Equilibrium temperature	216.67 K
System distance	33.194 pc

Recorded parameters

4 quantities with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Mass	251	M_earth	± 16	Radial Velocity	NASA Exoplanet Archive	Robertson et al. 2012
Orbital period	1,035.7	d	± 13	Radial Velocity	NASA Exoplanet Archive	Robertson et al. 2012
Semi-major axis	2.07	au	± 0.05	Radial Velocity	NASA Exoplanet Archive	Robertson et al. 2012
Eccentricity	0.22		± 0.07	Radial Velocity	NASA Exoplanet Archive	Robertson et al. 2012

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 197037B	HighPM*	0.7288″	—
HD 197037	HighPM*	3.578″	—
2MASS J20393215+4216468	YSO Candidate	115.8″	—
2MASS J20392395+4216348	YSO	143″	—
ZTF J203919.82+421308.2	LongPeriodV*	177.8″	—
2MASS J20391672+4216090	YSO	195.4″	—
BGPS G081.620+00.454	mmRad	250.2″	—
JCMTSF J203910.8+421442	smmRad	253.2″	—
2MASS J20391194+4216360	YSO	254.9″	—
2MASS J20390833+4215449	YSO	277.6″	—
BGPS G081.641+00.482	mmRad	282.3″	—

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-197037-b · Registry entry updated 2026-08-14.