Registry · exoplanet

47 UMa d

Exoplanet

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: 10h 59m 27.54s
Declination: +40° 25′ 49.8″
Galactic l, b: 175.78, 63.37
Magnitude V: 5.034
Distance: 13.797 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	47 UMa · G0V
Discovery	Radial Velocity, 2009 · Lick Observatory
Orbital period	14,002 d
Semi-major axis	11.6 au
Eccentricity	0.16
Radius	13.5 R⊕ · 1.2 R♃
Mass	521.22 M⊕ · 1.64 M♃
Density	1.16 g/cm³
Equilibrium temperature	91.58 K
System distance	13.797 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 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
479.9209	M_earth	± 69.92	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
521.22	M_earth	± 92.17	Radial Velocity	NASA Exoplanet Archive	Gregory & Fischer 2010	2010

Orbital period 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
19,000	d	± 1.1e+04	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
14,002	d	± 4,018	Radial Velocity	NASA Exoplanet Archive	Gregory & Fischer 2010	2010

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
13.8	au	± 4.8	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
11.6	au	± 2.1	Radial Velocity	NASA Exoplanet Archive	Gregory & Fischer 2010	2010

Eccentricity 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.38		± 0.16	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.16		± 0.09	Radial Velocity	NASA Exoplanet Archive	Gregory & Fischer 2010	2010

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
47 UMa b	Exoplanet	0″	5.034
47 UMa	Star	0″	—
47 UMa c	Exoplanet	0″	5.034
* 47 UMa d	Planet	4.985″	—
* 47 UMa b	Planet	4.985″	—
* 47 UMa c	Planet	4.985″	—
* 47 UMa	HighPM*	4.985″	—
2MASS J10595324+4020557	QSO	415.8″	—
SDSS J105847.97+402738.4	QSO	464.5″	—
SDSS J105946.85+403314.5	QSO	496.3″	—

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/47-uma-d · Registry entry updated 2026-08-14.