HAT-P-17
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 21h 38m 09s |
| Declination | +30° 29′ 19″ |
| Apparent magnitude (V) | 10.54 |
| Characteristics | |
| Spectral type | K |
| Astrometry | |
| Distance | 90 ± 3 pc |
| Details | |
| Mass | 0.857 ± 0.039 M☉ |
| Radius | 0.837 R☉ |
| Luminosity | 0.48 ± 0.04 L☉ |
| Temperature | 5246 ± 80 K |
| Metallicity | 0.00 (± 0.08) |
| Age | 7.8 (± 3.3) Gyr |
| Other designations | |
|
GSC 2717-00417
|
|
HAT-P-17 is a K-type main-sequence star about 90 ± 3 parsecs (290 ± 9.8 ly) away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b and HAT-P-17c, both discovered in 2010.[2][3]
References [edit]
- ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
- ^ Exoplanet.eu "HAT-P-17"
- ^ Howard, A. W. et al. (2012). "HAT-P-17b,c: A Transiting, Eccentric, Hot Saturn and a Long-period, Cold Jupiter". The Astrophysical Journal 749 (2). 134. arXiv:1008.3898. Bibcode:2012ApJ...749..134H. doi:10.1088/0004-637X/749/2/134.
Coordinates: 
21h 38m 09s, +30° 29′ 19″
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