Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pavo |
Right ascension | 20h 44m 57.49399s [1] |
Declination | −66° 12′ 11.5708″ [1] |
Apparent magnitude (V) | 3.42 [2] |
Characteristics | |
Spectral type | A5 IV [3] or A7 III [4] |
U−B color index | +0.12 [5] |
B−V color index | +0.16 [5] |
Astrometry | |
Radial velocity (Rv) | +3.7±0.5 [6] km/s |
Proper motion (μ) |
RA: −42.67
[1]
mas/
yr Dec.: +9.94 [1] mas/ yr |
Parallax (π) | 24.14 ± 0.16 mas [1] |
Distance | 135.1 ± 0.9
ly (41.4 ± 0.3 pc) |
Absolute magnitude (MV) | +0.33 [2] |
Details | |
Mass | 2.51 [3] M☉ |
Radius | 2.3 [7] R☉ |
Luminosity | 66 [3] L☉ |
Surface gravity (log g) | 3.84 [8] cgs |
Temperature | 8,184±278 [8] K |
Rotational velocity (v sin i) | 75 [3] km/s |
Age | 305 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Beta Pavonis, Latinised from β Pavonis, is a single, [9] white-hued star in the southern constellation of Pavo. It can be seen with the naked eye, having an apparent visual magnitude of 3.42. [2] Based upon an annual parallax shift of 24.14 mas as seen from Earth, it is located 135 light-years from the Sun. It is moving away from the Sun with a radial velocity of +4 km/s. [6] Beta Pavonis is a member of the Ursa Major Moving Group, a set of stars that share a similar motion through space. [10]
Zorec and Royer (2012) list a stellar classification for this star of A5 IV, [3] indicating it is an evolving subgiant star that has consumed the hydrogen at its core and has begun to expand onto the red giant branch. However, Houk (1979) listed a more evolved class of A7 III, [4] suggesting it is already a giant star. It has about 2.3 [7] times the Sun's radius and 2.51 [3] times the mass of the Sun. At the estimated age of 305 [8] million years, the star still has a relatively high rate of spin, having a projected rotational velocity of 75 km/s. [3] Beta Pavonis is radiating 66 [3] times the Sun's luminosity from its photosphere at an effective temperature of about 8,184 K. [8]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Pavo |
Right ascension | 20h 44m 57.49399s [1] |
Declination | −66° 12′ 11.5708″ [1] |
Apparent magnitude (V) | 3.42 [2] |
Characteristics | |
Spectral type | A5 IV [3] or A7 III [4] |
U−B color index | +0.12 [5] |
B−V color index | +0.16 [5] |
Astrometry | |
Radial velocity (Rv) | +3.7±0.5 [6] km/s |
Proper motion (μ) |
RA: −42.67
[1]
mas/
yr Dec.: +9.94 [1] mas/ yr |
Parallax (π) | 24.14 ± 0.16 mas [1] |
Distance | 135.1 ± 0.9
ly (41.4 ± 0.3 pc) |
Absolute magnitude (MV) | +0.33 [2] |
Details | |
Mass | 2.51 [3] M☉ |
Radius | 2.3 [7] R☉ |
Luminosity | 66 [3] L☉ |
Surface gravity (log g) | 3.84 [8] cgs |
Temperature | 8,184±278 [8] K |
Rotational velocity (v sin i) | 75 [3] km/s |
Age | 305 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Beta Pavonis, Latinised from β Pavonis, is a single, [9] white-hued star in the southern constellation of Pavo. It can be seen with the naked eye, having an apparent visual magnitude of 3.42. [2] Based upon an annual parallax shift of 24.14 mas as seen from Earth, it is located 135 light-years from the Sun. It is moving away from the Sun with a radial velocity of +4 km/s. [6] Beta Pavonis is a member of the Ursa Major Moving Group, a set of stars that share a similar motion through space. [10]
Zorec and Royer (2012) list a stellar classification for this star of A5 IV, [3] indicating it is an evolving subgiant star that has consumed the hydrogen at its core and has begun to expand onto the red giant branch. However, Houk (1979) listed a more evolved class of A7 III, [4] suggesting it is already a giant star. It has about 2.3 [7] times the Sun's radius and 2.51 [3] times the mass of the Sun. At the estimated age of 305 [8] million years, the star still has a relatively high rate of spin, having a projected rotational velocity of 75 km/s. [3] Beta Pavonis is radiating 66 [3] times the Sun's luminosity from its photosphere at an effective temperature of about 8,184 K. [8]