| Discovery | |
|---|---|
| Discovered by | Bakos et al. |
| Discovery site |  United States |
| Discovery date | 21 July 2009 |
| Radial velocity | |
| Orbital characteristics | |
| Apastron | 2.006 AU (300,100,000 km) |
| Periastron | 0.366 AU (54,800,000 km) |
| 1.186+0.018 −0.033 AU | |
| Eccentricity | 0.691 ± 0.018 |
| 428.5 ± 3 d 1.173 ± 0.008 y | |
| 2454890.05 ± 0.48 | |
| 176.7 ± 0.5 | |
| Star | HAT-P-13 |
HAT-P-13c is a substellar object orbiting the star HAT-P-13 located 698 light years away from Earth in the constellation of Ursa Major. A search for transits was negative, however only 72% of the possible transit configurations could be ruled out.[1] With a mass at least 15.2 times that of Jupiter, it may be a massive planet or a small brown dwarf.[2] The gravitational effect of this object on the inner transiting planet HAT-P-13b may allow a precise determination of the inner planet's internal structure.[3]
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