47 Ursae Majoris d

47 Ursae Majoris d
Parent star
Exoplanet		List of exoplanets
Star		47 Ursae Majoris
Constellation		Ursa Major
Right ascension	(α)	10^h 59^m 28.0^s
Declination	(δ)	+40° 25′ 49″
Apparent magnitude	(m_V)	5.03
Distance		45.9 ly (14.06 pc)
Spectral type		G1V
Mass	(m)	1.08 M_☉
Radius	(r)	1.172 ± 0.111 R_☉
Temperature	(T)	5887 ± 3.8 K
Metallicity	[Fe/H]	0.04
Age		6.03 Gyr
Orbital elements
Semi-major axis	(a)	11.6+2.1 −2.9AU (~1730 Gm)
		~82.4 mas
Periastron	(q)	9.7+4.1 −3.2 AU (~1460 Gm)
Apastron	(Q)	13.4+3.7 −4.7 AU (~2010 Gm)
Eccentricity	(e)	0.16+0.09 −0.16
Orbital period	(P)	14002+4018 −5095d (~38.33 y)
Orbital speed	(υ)	9.0+7.8 −3.7 km/s
Argument of periastron	(ω)	110+132 −160°
Time of periastron	(T₀)	2,451,736+6783 −5051JD
Physical characteristics
Minimum mass	(m sin i)	1.64+0.29 −0.48M_J
Stellar flux	(F_⊙)	0.0082 - 0.0157 ⊕
Temperature	(T)	85
Discovery information
Discovery date		6 March 2010
Discoverer(s)		Gregory and Fischer
Discovery method		Doppler spectroscopy (Bayesian Kepler periodogram)
Discovery site		United States
Discovery status		Confirmed
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data
Exoplanet Archive		data
Open Exoplanet Catalogue		data

47 Ursae Majoris d (sometimes abbreviated 47 Uma d) is an extrasolar planet approximately 46 light-years away in the constellation of Ursa Major. The planet was discovered located in a long-period orbit (38 years) around the star 47 Ursae Majoris. As of 2011, it is the outermost of three known planets in its planetary system. It has a mass of at least 1.64 times that of Jupiter. It is the longest-period planet detected by Doppler spectroscopy. The evidence of this planet was found by Bayesian Kepler periodogram in March 2010.