HD 98219
HD 98219, also named Hunahpú, is a subgiant star in the constellation Crater. It has a confirmed exoplanet. At around 4 billion years old, it is a star around 1.3 times as massive as the Sun that has cooled and expanded to 4.5 times the Sun's diameter, brightening to be around 11 times as luminous. The International Astronomical Union (IAU) gave the opportunity to Honduras to name the star Hunahpú as part of NameExoWorlds. Hunahpú was one of the twin gods who became the Sun in K'iche' (Quiché) Mayan mythology.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Crater |
| Right ascension | 11h 17m 47.5531s |
| Declination | –23° 58′ 31.4952″ |
| Apparent magnitude (V) | +8.05 |
| Characteristics | |
| Spectral type | K0III/IV |
| Astrometry | |
| Radial velocity (Rv) | -10.30 km/s |
| Proper motion (μ) | RA: −130.770±0.068 mas/yr Dec.: −16.887±0.050 mas/yr |
| Parallax (π) | 8.7662 ± 0.0489 mas |
| Distance | 372 ± 2 ly (114.1 ± 0.6 pc) |
| Absolute magnitude (MV) | +2.6 |
| Details | |
| Mass | 1.41 M☉ |
| Radius | 4.6 R☉ |
| Luminosity | 8.284 L☉ |
| Surface gravity (log g) | 3.36 cgs |
| Temperature | 4,925 K |
| Age | 4 Gyr |
| Database references | |
| SIMBAD | data |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.