| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Cygnus |
| 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.[1][2]