Nu Cassiopeiae

Nu Cassiopeiae

Map of the Bayer-designated stars in Cassiopeia. Nu Cassiopeiae is circled.
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cassiopeia
Right ascension 00h 43m 28.07045s[1]
Declination +47° 01′ 28.3694″[1]
Apparent magnitude (V) +4.89[2]
Characteristics
Spectral type B9 III[3] or B8 V[4]
U−B color index −0.43[5]
B−V color index −0.11[5]
Astrometry
Radial velocity (Rv)+9.0±4.2[6] km/s
Proper motion (μ) RA: +30.84±0.22[1] mas/yr
Dec.: −10.02±0.18[1] mas/yr
Parallax (π)7.92 ± 0.32 mas[1]
Distance410 ± 20 ly
(126 ± 5 pc)
Absolute magnitude (MV)−0.60[7]
Details
Mass3.90±0.07[8] M☉
Luminosity348[8] L☉
Surface gravity (log g)4.026±0.035[9] cgs
Temperature13,268±150[9] K
Rotational velocity (v sin i)134±17[9] km/s
Other designations
ν Cas, 25 Cas, BD+50° 147, HD 4636, HIP 3801, HR 223, SAO 21729[10]
Database references
SIMBADdata
ν Cassiopeiae in optical light

Nu Cassiopeiae,[11] Latinized from ν Cassiopeiae, is a solitary[12] star in the northern constellation of Cassiopeia. With an apparent visual magnitude of +4.89,[2] it is a faint star but visible to the naked eye. Based upon an annual parallax shift of 7.92 mas as seen from Earth,[1] this star is located around 410 light years from the Sun. Cowley et al. (1969) catalogued this star with a stellar classification of B9 III,[3] indicating it has the spectrum of an evolved B-type giant star. However, Palmer et al. (1968) assigned it a class of B8 V, which would instead suggest it is an ordinary B-type main-sequence star.[4]

  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 Cite error: The named reference Haeggkvist1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Palmer1968 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Crawford1963 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Huang2010 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference NUCas was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).