Phi1 Pavonis
Phi1 Pavonis, latinized from φ1 Pavonis, is a single star in the southern constellation of Pavo. It has a yellow-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.75. The star is located at a distance of approximately 92 light years away based on parallax. It is drifting closer to the Sun with a radial velocity of −20 km/s.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pavo |
| Right ascension | 20h 35m 34.84931s |
| Declination | −60° 34′ 54.3103″ |
| Apparent magnitude (V) | 4.75 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F0V |
| U−B color index | +0.04 |
| B−V color index | +0.29 |
| Astrometry | |
| Radial velocity (Rv) | −20.0±4.2 km/s |
| Proper motion (μ) | RA: +70.271 mas/yr Dec.: −184.963 mas/yr |
| Parallax (π) | 35.3436 ± 0.2300 mas |
| Distance | 92.3 ± 0.6 ly (28.3 ± 0.2 pc) |
| Absolute magnitude (MV) | 2.53 |
| Details | |
| Mass | 1.51 M☉ |
| Radius | 1.83+0.15 −0.09 R☉ |
| Luminosity | 8.17±0.06 L☉ |
| Temperature | 7,209+190 −281 K |
| Rotational velocity (v sin i) | 150.0 km/s |
| Age | 30+230 −10 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an ordinary F-type main-sequence star with a stellar classification of F0V. It has 1.5 times the mass of the Sun and 1.8 times the Sun's radius. This is a young star, perhaps 30 million years old, and has a high rate of spin with a projected rotational velocity of 150 km/s. It is radiating 8.2 times the luminosity of the Sun from its photosphere at an effective temperature of 7,209 K.
Phi1 Pavonis is a candidate debris disk star, although Gray et al. (2006) reported a non-detection of an infrared excess. Nilsson et al. (2010) report a marginal detection, orbiting 74 AU from the host star with a temperature of 57 K and an estimated 3.1±1.7 times the mass of the Moon.