Phi1 Pavonis
Single star in the constellation Pavo
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Phi1 Pavonis, latinized from φ1 Pavonis, is a single[11] 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.[1] 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.[5]
 | |
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Pavo[1] |
| Right ascension | 20h 35m 34.85007s[2] |
| Declination | −60° 34′ 54.2968″[2] |
| Apparent magnitude (V) | 4.75[1] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F0V[3] |
| U−B color index | +0.04[4] |
| B−V color index | +0.29[1] |
| Astrometry | |
| Radial velocity (Rv) | −20.0±4.2[5] km/s |
| Proper motion (μ) | RA: +69.912[2] mas/yr Dec.: −185.861[2] mas/yr |
| Parallax (π) | 35.6214±0.0982 mas[2] |
| Distance | 91.6 ± 0.3 ly (28.07 ± 0.08 pc) |
| Absolute magnitude (MV) | 2.53[1] |
| Details | |
| Mass | 1.51[6] M☉ |
| Radius | 1.76[7] R☉ |
| Luminosity | 7.8[7] L☉ |
| Surface gravity (log g) | 4.16[7] cgs |
| Temperature | 7,273[7] K |
| Rotational velocity (v sin i) | 150.0[8] km/s |
| Age | 30+230 −10[9] Myr |
| Other designations | |
| phi1 Pav, CPD−61°6492, GC 28609, HD 195627, HIP 101612, HR 7848, SAO 254823[10] | |
| Database references | |
| SIMBAD | data |
This is an ordinary F-type main-sequence star with a stellar classification of F0V.[3] It has 1.5 times the mass of the Sun[6] and 1.8 times the Sun's radius.[7] This is a young star, perhaps 30 million years old,[9] and has a high rate of spin with a projected rotational velocity of 150 km/s.[8] It is radiating 7.8 times the luminosity of the Sun from its photosphere at an effective temperature of 7,273 K.[7]
Phi1 Pavonis is a candidate debris disk star, although Gray et al. (2006) reported a non-detection of an infrared excess.[3] 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.[9]