Astronomy:47 Ursae Majoris d

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Short description: Extrasolar planet in the constellation Ursa Major
47 Ursae Majoris d
Jkv.47UMa.d.png
An artist's impression of 47 UMa d
Discovery
Discovered byGregory and Fischer
Discovery site United States
Discovery date6 March 2010
Doppler spectroscopy
(Bayesian Kepler periodogram)
Orbital characteristics
11.6+2.1−2.9[1] AU
Eccentricity0.16+0.09−0.16[1]
Orbital period14,002+4018−5095[1] d
~38.33 y
astron|astron|helion}}2,451,736+6783−5051[1]
110+132−160[1]
Star47 Ursae Majoris


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.[1]

Orbits of the 47 Ursae Majoris system planets. 47 UMa d is the outermost planet.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Gregory, Philip C.; Fischer, Debra A. (2010). "A Bayesian periodogram finds evidence for three planets in 47 Ursae Majoris". Monthly Notices of the Royal Astronomical Society 403 (2): 731–747. doi:10.1111/j.1365-2966.2009.16233.x. Bibcode: 2010MNRAS.403..731G. https://academic.oup.com/mnras/article/403/2/731/1181806. 

Coordinates: Sky map 10h 59m 28.0s, +40° 25′ 49″




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