Upsilon Piscis Austrini (υ Piscis Austrini) is a solitary,[9] orange-hued star in the southern constellation of Piscis Austrinus. It is faintly visible to the naked eye with an apparent visual magnitude of +4.98.[2] Based upon an annual parallax shift of 7.69 mas as seen from the Earth,[1] the star is located 420 light-years from the Sun.
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Piscis Austrinus |
Right ascension | 22h 08m 25.93132s[1] |
Declination | −34° 02′ 37.8248″[1] |
Apparent magnitude (V) | +4.98[2] |
Characteristics | |
Spectral type | K4 III[3] |
B−V color index | +1.50[2] |
Astrometry | |
Radial velocity (Rv) | +20.1[4] km/s |
Proper motion (μ) | RA: +4.55[1] mas/yr Dec.: −49.02[1] mas/yr |
Parallax (π) | 7.69 ± 0.22 mas[1] |
Distance | 420 ± 10 ly (130 ± 4 pc) |
Absolute magnitude (MV) | −0.47±0.062[5] |
Details | |
Temperature | 4,066[6] K |
Rotational velocity (v sin i) | 1.0±1.0[7] km/s |
Other designations | |
Database references | |
SIMBAD | data |
This is an evolved K-type giant star with a stellar classification of K4 III.[3] It is catalogued as a member of the Wolf 630 moving group.[10] Upsilon Piscis Austrini is moving through the galaxy at a speed of 36.4 km/s relative to the Sun. Its projected galactic orbit carries it between 17,700 and 25,400 light-years from the center of the galaxy.[11][unreliable source?]