Upsilon1 Cassiopeiae

From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other star systems with this Bayer designation, see Upsilon Cassiopeiae.
υ1 Cassiopeiae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension 00h 55m 00.155s[1]
Declination +58° 58′ 21.71″[1]
Apparent magnitude (V) +4.83
Characteristics
Spectral type K2III
U−B color index +1.26
B−V color index +1.21
Variable type none
Astrometry
Radial velocity (Rv) −23 km/s
Proper motion (μ) RA: −33.50 ± 0.36[1] mas/yr
Dec.: −40.82 ± 0.33[1] mas/yr
Parallax (π) 9.93 ± 0.49[1] mas
Distance 330 ± 20 ly
(101 ± 5 pc)
Absolute magnitude (MV) −0.64
Other designations
26 Cassiopeiae, HR 253, HD 5234, BD+58°134, HIP 4292, SAO 21832, ADS 748, CCDM J00551+5858

Upsilon1 Cassiopeiae1 Cas, υ1 Cassiopeiae) is a triple star system in the constellation Cassiopeia. υ1 Cassiopeiae is an orange K-type giant with an apparent magnitude of +4.83. It is approximately 330 light years from Earth.[1]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry