1 Cassiopeiae

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1 Cassiopeiae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension 23h 06m 36.818s[1]
Declination +59° 25′ 11.14″[1]
Apparent magnitude (V) +4.84
Characteristics
Spectral type B0.5 IV
U−B color index −0.87
B−V color index −0.03
Variable type none
Astrometry
Radial velocity (Rv) −9 km/s
Proper motion (μ) RA: 6.94 ± 0.14[1] mas/yr
Dec.: −1.95 ± 0.14[1] mas/yr
Parallax (π) 2.89 ± 0.13[1] mas
Distance 1,130 ± 50 ly
(350 ± 20 pc)
Absolute magnitude (MV) −2.8
Details
Mass 13.1[2] M
Radius 10.2[3] R
Luminosity 18,200[2] L
Surface gravity (log g) 3.98[2] cgs
Temperature 27,200[2] K
Other designations
HR 8797, HD 218376, BD+58°2545, HIP 114104, SAO 35147

1 Cassiopeiae is a star in the constellation Cassiopeia. It is a blue-white B-type subgiant with an apparent magnitude of +4.84 and is approximately 1130 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
  2. ^ a b c d Fitzpatrick, E. L.; Massa, D. (March 2005), Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry, The Astronomical Journal 129 (3): 1642–1662, arXiv:astro-ph/0412542, Bibcode:2005AJ....129.1642F, doi:10.1086/427855 
  3. ^ Underhill, A. B. et al. (November 1979), Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars, Monthly Notices of the Royal Astronomical Society 189: 601–605, Bibcode:1979MNRAS.189..601U, doi:10.1093/mnras/189.3.601