| Discovery | |
|---|---|
| Discovered by | Bakos et al. |
| Discovery site |  United States |
| Discovery date | 21 July 2009 |
| Detection method | Radial velocity |
| Orbital characteristics | |
| Apastron | 2.006 AU (300,100,000 km) |
| Periastron | 0.366 AU (54,800,000 km) |
| Semi-major axis | 1.186 −0.033 AU |
| Eccentricity | 0.691 ± 0.018 |
| Orbital period (sidereal) | 428.5 ± 3 d 1.173 ± 0.008 y |
| Time of periastron | 2454890.05 ± 0.48 |
| Argument of periastron | 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. With a mass at least 15.2 times that of Jupiter, it may be a massive planet or a small brown dwarf. 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.
References
- Szabó, Gy. M.; et al. (2010). "A multi-site campaign to detect the transit of the second planet in HAT-P-13". Astronomy and Astrophysics. 523. A84. arXiv:1009.3598. Bibcode:2010A&A...523A..84S. doi:10.1051/0004-6361/201015172. S2CID 118739793.
- Bakos, G. Á.; et al. (2009). "HAT-P-13b,c: A Transiting Hot Jupiter with a Massive Outer Companion on an Eccentric Orbit". The Astrophysical Journal. 707 (1): 446–456. arXiv:0907.3525. Bibcode:2009ApJ...707..446B. doi:10.1088/0004-637X/707/1/446. S2CID 7591731.
- ATYGIN K., BODENHEIMER P. & LAUGHLIN G., 2009 "Determination of the Interior Structure of Transiting Planets in Multiple-Planet Systems" ApJ. Letters 2009 preprint
External links
- JPL PlanetQuest search
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