Upsilon Piscis Austrini

Upsilon Piscis Austrini
Diagram showing star positions and boundaries of the Piscis Austrinus constellation and its surroundings
Location of υ Piscis Austrini (circled)
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]
Distance420 ± 10 ly
(130 ± 4 pc)
Absolute magnitude (MV)−0.47±0.062[5]
Details
Temperature4,066[6] K
Rotational velocity (v sin i)1.0±1.0[7] km/s
Other designations
υ PsA, CPD−34° 9054, HD 210066, HIP 109289, HR 8433, SAO 213577[8]
Database references
SIMBADdata

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.

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?]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Corben1968 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference park2013 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Zamanov2008 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference McDonald1983 was invoked but never defined (see the help page).
  11. ^ Upsilon Piscis Austrini (HIP 109289)