Omicron1 Cancri

For other stars with this Bayer designation, see ο Cancri.
Omicron1 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer
Right ascension 08h 57m 14.95026s[1]
Declination +15° 19′ 21.9512″[1]
Apparent magnitude (V) +5.20[2]
Characteristics
Spectral type A5 III[3]
B−V color index +0.1540[2]
Astrometry
Radial velocity (Rv)−4.6±2.8[4] km/s
Proper motion (μ) RA: +61.47[1] mas/yr
Dec.: +19.40[1] mas/yr
Parallax (π)21.87 ± 0.26 mas[1]
Distance149 ± 2 ly
(45.7 ± 0.5 pc)
Absolute magnitude (MV)+1.92[5]
Details
Mass2.02[6] M☉
Radius1.86[7] R☉
Luminosity13.4[8] L☉
Surface gravity (log g)4.16[6] cgs
Temperature8,636±294[6] K
Rotational velocity (v sin i)90[6] km/s
Age598[6] Myr
Other designations
ο1 Cnc, 62 Cancri, BD+15° 1945, HD 76543, HIP 43970, HR 3561, SAO 98247[9]
Database references
SIMBADdata

Omicron1 Cancri, Latinised from ο1 Cancri, is a solitary,[10] white-hued star in the zodiac constellation of Cancer. It is visible to the naked eye with an apparent visual magnitude of +5.20.[2] Based upon an annual parallax shift of 21.87 mas as seen from Earth,[1] this star is located around 149 light-years from the Sun. It most likely forms a co-moving pair with Omicron2 Cancri.[11]

With a stellar classification of A5 III,[3] this appears to be an evolved, A-type giant star. At the age of about 600 million years,[6] it has double[6] the mass of the Sun and 1.86 times the Sun's radius.[7] Omicron1 Cancri is radiating 13.4[8] times the solar luminosity from its photosphere at an effective temperature of about 8,636 K.[6]

Omicron1 Cancri has an infrared excess, indicating it surrounded by a circumstellar debris disk.[7] The signature matches a two-component disk with the spatially separated belts having temperatures of 146 K and 81 K.[8]

  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 c 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. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Rhee2007 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Vican2016 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).
  11. ^ Cite error: The named reference Shaya2011 was invoked but never defined (see the help page).