| 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 |
| 516.22 ± 3.25 d 1.4133 ± 0.0089 y | |
| 2452861.05 ± 2.06 | |
| 117.63 ± 21.06 | |
| Star | 11 Ursae Minoris |
| Proper orbital elements | |
Proper semi-major axis | 1.54±0.07 AU |
Proper eccentricity | 0.08±0.03 |
| Physical characteristics | |
| Mass | 11.2±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]
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