Rho Ceti

Rho Ceti
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cetus
Right ascension 02h 25m 57.00560s[1]
Declination −12° 17′ 25.7104″[1]
Apparent magnitude (V) 4.885[2]
Characteristics
Spectral type A0 V[3]
U−B color index +0.001[2]
B−V color index −0.037[2]
Astrometry
Radial velocity (Rv)+18.9±2.0[4] km/s
Proper motion (μ) RA: −11.28[1] mas/yr
Dec.: −9.48[1] mas/yr
Parallax (π)7.15 ± 0.26 mas[1]
Distance460 ± 20 ly
(140 ± 5 pc)
Absolute magnitude (MV)−0.85[5]
Details
Radius3.1[6] R☉
Luminosity178[7] L☉
Temperature8,905[7] K
Rotational velocity (v sin i)219[8] km/s
Other designations
ρ Cet, 72 Cet, BD−12° 451, FK5 1066, HD 15130, HIP 11345, HR 708, SAO 148385.[9]
Database references
SIMBADdata

Rho Ceti , Latinized from ρ Ceti, is the Bayer designation for a star in the equatorial constellation of Cetus. It is faintly visible to the naked eye with an apparent visual magnitude of 4.885.[2] The distance to this star, based upon an annual parallax shift of 7.15 mas,[1] is around 460 light years.

This is an A-type main sequence star with a stellar classification of A0 V.[3] It is spinning rapidly with a projected rotational velocity of 219[8] km/s, giving the star an oblate shape with an equatorial bulge that is 10% larger than the polar radius.[10] The star has an estimated size 3.1[6] times the radius of the Sun and is radiating 178 times the solar luminosity from its outer atmosphere at an effective temperature of 8,905 K.[7]

  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 d Cite error: The named reference GutierrezMoreno1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 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 Cite error: The named reference aaa367_521 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Royer2007 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 belle2012 was invoked but never defined (see the help page).