42 Cassiopeiae

42 Cassiopeiae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia
Right ascension 01h 42m 55.86184s[1]
Declination +70° 37′ 21.09002″[1]
Apparent magnitude (V) +5.18[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type B9 V[4]
B−V color index −0.022±0.002[2]
Variable type suspected β Per[5]
Astrometry
Radial velocity (Rv)+6.6±2.9[2] km/s
Proper motion (μ) RA: +76.763[1] mas/yr
Dec.: −13.955[1] mas/yr
Parallax (π)11.2028 ± 0.1432 mas[1]
Distance291 ± 4 ly
(89 ± 1 pc)
Absolute magnitude (MV)0.53[2]
Details
Mass2.68±0.04[3] M☉
Radius2.63±0.13[6] R☉
Luminosity66.12[2] L☉
Surface gravity (log g)3.98±0.04[6] cgs
Temperature10,141±61[6] K
Rotational velocity (v sin i)149[3] km/s
Age67+188
−57[7] Myr
Other designations
42 Cas, NSV 590, BD+69°114, GC 2059, HD 10250, HIP 8016, HR 480, SAO 4470[8]
Database references
SIMBADdata

42 Cassiopeiae is a possible binary star[9] system in the northern circumpolar constellation of Cassiopeia. It is visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of +5.18. The system is located approximately 291 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +7 km/s.[2]

This is classified as a suspected eclipsing binary of the Algol type,[5] with a period of 16.77 days and a magnitude decrease of 0.3.[10] The primary is a B-type main-sequence star with a stellar classification of B9V.[4] It is roughly 67[7] million years old and is spinning with a projected rotational velocity of 149 km/s.[3] The star has 2.7[3] times the mass of the Sun and 2.6[6] times the Sun's radius. It is radiating 66[2] times the luminosity of the Sun from its photosphere at an effective temperature of 10,141 K.[6]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference aj129_3_1642 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Gullikson2016 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 Hoffleit1996 was invoked but never defined (see the help page).