Omega1 Cygni

Omega1 Cygni

A light curve for V2014 Cygni, plotted from TESS data[1]
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cygnus
Right ascension 20h 30m 03.54116s[2]
Declination +48° 57′ 05.6446″[2]
Apparent magnitude (V) +4.93 - 4.96[3]
Characteristics
Spectral type B2.5 IV[4]
U−B color index −0.68[5]
B−V color index −0.09[5]
Variable type β Cep[6] (λ Eri[3])
Astrometry
Radial velocity (Rv)−21.9±2.0[7] km/s
Proper motion (μ) RA: +10.883[8] mas/yr
Dec.: +7.057[8] mas/yr
Parallax (π)2.5878 ± 0.1637 mas[8]
Distance1,260 ± 80 ly
(390 ± 20 pc)
Absolute magnitude (MV)−2.65[9]
Details
Mass8.1±0.2[4] M☉
Radius13.825[10] R☉
Luminosity1,549[11] L☉
Surface gravity (log g)2.312[10] cgs
Temperature16,982[11] K
Metallicity [Fe/H]0.0[9] dex
Rotational velocity (v sin i)145[12] km/s
Age33.2±4.5[4] Myr
Other designations
ω1 Cyg, 45 Cygni, BD+48°3142, FK5 3641, HD 195556, HIP 101138, HR 7844, SAO 49712, V2014 Cygni[13]
Database references
SIMBADdata

Omega1 Cygni, Latinized from ω1 Cygni, is the Bayer designation for a solitary[14] star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent visual magnitude of 4.94.[5] Based upon an annual parallax shift of 2.59 mas,[8] it is estimated to lie roughly 1,260 light years from the Sun. Relative to its neighbors, this star has a peculiar velocity of 25.7±2.2 km/s.[7]

This is a somewhat evolved B-type subgiant star with a stellar classification of B2.5 IV.[4] Telting and colleagues report it as a Beta Cephei variable with a high degree of confidence as they found regular pulsations in its spectrum in a high-resolution spectroscopy study published in 2006.[6] Its brightness varies irregularly by 0.034 magnitude every 1.137 days.[15]

  1. ^ Cite error: The named reference MAST was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference vsx was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference tetzlaff2011 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Mermilliod1986 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Telting2006 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Bobylev2013 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference dr2 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference gontcharov2012 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference mcdonald2017 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference simondiaz2017 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Abt2002 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference lefevre2009 was invoked but never defined (see the help page).