HAT-P-7b
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| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HAT-P-7 | |
| Constellation | Cygnus | |
| Right ascension | (α) | 19h 28m 59s |
| Declination | (δ) | +47° 58′ 10″ |
| Distance | 1044+163−130 ly (320+50−40 pc) | |
| Spectral type | F8 | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.0377 ± 0.0005 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 2.2047299 (± 4×10-6) d |
| Inclination | (i) | 85.7+3.5−3.1° |
| Angular distance | (θ) | 0.12 mas |
| Time of transit | (Tt) | 2453790.2593±0.001 JD |
| Physical characteristics | ||
| Mass | (m) | 1.776+0.077−0.049 MJ |
| Radius | (r) | 1.363+0.195−0.087 RJ |
| Density | (ρ) | 930 kg/m3 |
| Surface gravity | (g) | 24.75 m/s² (2.524 g) |
| Temperature | (T) | 2730+150−100 K |
| Discovery information | ||
| Discovery date | March 6, 2008 | |
| Discoverer(s) | HATNet Project | |
| Detection method | Transit | |
| Discovery status | Published | |
HAT-P-7b is an extrasolar planet discovered in 2008. It orbits very close to its star and is larger than Jupiter due to the extreme heat it receives from its star. The dayside temperature is predicted to be 2730+150−100 K.[1]
[edit] References
- ^ Pal, A.; G. A. Bakos, G. Torres, R. W. Noyes, D. W. Latham, Geza Kovacs, G. W. Marcy, D. A. Fischer, R. P. Butler, D. D. Sasselov, B. Sipocz, G. A. Esquerdo, Gabor Kovacs, R. Stefanik, J. Lazar, I. Papp, P. Sari (2008). "HAT-P-7b: An Extremely Hot Massive Planet Transiting a Bright Star in the Kepler Field". ApJ. arXiv:0803.0746.
[edit] External links
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