1 Cassiopeiae

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[2]
Characteristics
Spectral type B0.5 III[3]
U−B color index −0.87
B−V color index −0.060±0.004[2]
Astrometry
Radial velocity (Rv)−9.1±0.9[2] 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 mas[1]
Distance1,130 ± 50 ly
(350 ± 20 pc)
Absolute magnitude (MV)−2.91[2]
Details
Mass13.1[4] M☉
Radius10.2[5] R☉
Luminosity18,200[4] L☉
Surface gravity (log g)3.98[4] cgs
Temperature27,200[4] K
Metallicity [Fe/H]−0.40[6] dex
Rotational velocity (v sin i)31[7] km/s
Age5.7±0.1[8] Myr
Other designations
1 Cas, BD+58°2545, FK5 1201, HD 218376, HIP 114104, HR 8797, SAO 35147[9]
Database references
SIMBADdata

1 Cassiopeiae is a single[10] star in the northern constellation of Cassiopeia, located around 1,130 light years from the Sun.[1] It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.84.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −9 km/s.[2]

The stellar classification of 1 Cassiopeiae is B0.5 III,[3] matching an evolved B-type giant star. It is 5.7[8] million years old with a projected rotational velocity of 31.[7] The star has 13.1[4] times the mass of the Sun and 10.2[5] times the Sun's radius. It is radiating 18,200[4] times the Sun's luminosity from its photosphere at an effective temperature of 27,200 K.[4]

  1. ^ a b c d e f Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Zorec2009 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference aj129_3_1642 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference mnras189_601 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Gies1992 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Simón-Díaz2017 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).