Astronomy:11 Ursae Minoris b
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Short description: Extrasolar planet
| Discovery | |
|---|---|
| Discovered by | Döllinger et al. |
| Discovery site | TLS |
| Discovery date | August 12, 2009 |
| Radial velocity | |
| Orbital characteristics | |
| 1.54 ± 0.07 AU (230,000,000 ± 10,000,000 km) | |
| Eccentricity | 0.08 ± 0.03 |
| Orbital period | 516.22 ± 3.25 d 1.4133 ± 0.0089 y |
| astron|astron|helion}} | 2452861.05 ± 2.06 |
| 117.63 ± 21.06 | |
| Star | 11 Ursae Minoris |
| Proper orbital elements | |
| Proper semi-major axis | Template:Value AU |
| Proper eccentricity | Template:Value |
| Physical characteristics | |
| Mass | Template:Value |♃|J}}}}}}[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 |♃|J}}}}}}. 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
- ↑ "11 UMi". Open Exoplanet Catalogue. http://www.openexoplanetcatalogue.com/planet/11%20UMi%20b/. Retrieved January 23, 2022.
- ↑ 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. doi:10.1051/0004-6361/200911702. Bibcode: 2009A&A...505.1311D. http://www.aanda.org/articles/aa/full_html/2009/39/aa11702-09/aa11702-09.html.
- Jean Schneider (2011). "Notes for Planet 11 Umi b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/11_umi_b--575/.
Coordinates: 
15h 17m 05.8886s, +71° 49′ 26.044″
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