Delta Pavonis
Delta Pavonis, Latinized from δ Pavonis, is a single star in the southern constellation of Pavo. It has an apparent visual magnitude of 3.56, making it a fourth-magnitude star that is visible to the naked eye from the southern hemisphere. Parallax measurements yield an estimated distance of 19.89 light-years (6.10 parsecs) from Earth. This makes it one of the nearest bright stars to the Solar System. It is approaching the Sun with a radial velocity of −23.5 km/s, and is predicted to come as close as 17.8 light-years in around 49,200 years.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pavo |
| Right ascension | 20h 08m 43.60887s |
| Declination | −66° 10′ 55.4428″ |
| Apparent magnitude (V) | 3.56 |
| Characteristics | |
| Spectral type | G8 IV |
| U−B color index | 0.45 |
| B−V color index | 0.76 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | −23.52±0.81 km/s |
| Proper motion (μ) | RA: +1,211.761 mas/yr Dec.: –1,130.237 mas/yr |
| Parallax (π) | 163.9544 ± 0.1222 mas |
| Distance | 19.89 ± 0.01 ly (6.099 ± 0.005 pc) |
| Absolute magnitude (MV) | 4.62 |
| Details | |
| Mass | 1.051±0.062 M☉ |
| Radius | 1.197±0.016 R☉ |
| Luminosity | 1.24±0.03 L☉ |
| Surface gravity (log g) | 4.26±0.06 cgs |
| Temperature | 5,571±48 K |
| Metallicity [Fe/H] | 0.33±0.03 dex |
| Rotation | 21.4±9.3 d |
| Rotational velocity (v sin i) | 0.32 km/s |
| Age | 6.6–6.9 Gyr 9.3 Gyr |
| Other designations | |
| 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.