11 URSAE MINORIS B Latitude and Longitude:

Sky map 15h 17m 05.8886s, +71° 49′ 26.044″
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11 Ursae Minoris b
Discovery
Discovered byDöllinger et al.
Discovery site TLS
Discovery dateAugust 12, 2009
Radial velocity
Orbital characteristics
1.54 ± 0.07 AU (230,000,000 ± 10,000,000 km)
Eccentricity0.08 ± 0.03
516.22 ± 3.25 d
1.4133 ± 0.0089 y
2452861.05 ± 2.06
117.63 ± 21.06
Proper orbital elements
1.54±0.07  AU
0.08±0.03
Physical characteristics
Mass11.2±0.2 MJ [1]

11 Ursae Minoris b is an extrasolar planet which orbits the K-type giant star 11 Ursae Minoris, located approximately 390 light years away in the constellation Ursa Minor. This planet has a minimum mass of 10.5  MJ. Since inclination is not known, the actual mass is unknown. This planet may actually be a brown dwarf if a true mass is over 13 times that of Jupiter. This planet takes 17 months to orbit the star at the average distance of 1.54 AU in a circular orbit. This superjovian planet was detected by radial velocity method on August 12, 2009. [2]

References

  1. ^ "11 UMi". Open Exoplanet Catalogue. Retrieved January 23, 2022.
  2. ^ Döllinger, P.; et al. (2009). "Planetary companions around the K giant stars 11 Ursae Minoris and HD 32518". Astronomy and Astrophysics. 505 (3): 1311–1317. arXiv: 0908.1753. Bibcode: 2009A&A...505.1311D. doi: 10.1051/0004-6361/200911702. S2CID  9686080.