Rho2 Cancri

For other stars with this Bayer designation, see ρ Cancri.
Rho2 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer
Right ascension 08h 55m 39.68055s[1]
Declination +27° 55′ 38.9299″[1]
Apparent magnitude (V) 5.22[2]
Characteristics
Spectral type G8 III[3] or G8 II-III[4]
U−B color index +0.78[2]
B−V color index +1.00[2]
Astrometry
Radial velocity (Rv)+16.3±0.3[5] km/s
Proper motion (μ) RA: −12.24[1] mas/yr
Dec.: −33.79[1] mas/yr
Parallax (π)6.70 ± 0.32 mas[1]
Distance490 ± 20 ly
(149 ± 7 pc)
Absolute magnitude (MV)−1.13[3]
Details
Mass3.59[6] M☉
Radius24.2[3] R☉
Luminosity310[3] L☉
Surface gravity (log g)2.46[7] cgs
Temperature4,994[7] K
Metallicity [Fe/H]0.11[7] dex
Rotational velocity (v sin i)8.1[3] km/s
Age234[6] Myr
Other designations
ρ2 Cnc Cnc, 58 Cancri, BD+28° 1666, FK5 2705, HD 76219, HIP 43834, HR 3540, SAO 80511[8]
Database references
SIMBADdata

Rho2 Cancri (ρ2 Cancri) is a solitary,[4] yellow-hued star in the constellation Cancer. With an apparent visual magnitude of 5.22,[2] it is visible to the naked eye on a dark night. Based upon an annual parallax shift of 6.70 mas as seen from Earth,[1] this star is located around 490 light-years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.06 due to interstellar dust.[6]

At the age of about 234[6] million years, is an evolved, G-type giant star with a stellar classification of G8 III.[3] It has an estimated 3.6[6] times the mass of the Sun and has expanded to 24[3] times the Sun's radius. It is radiating 310[3] times the Sun's luminosity from its photosphere at an effective temperature of 4,994 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 Fernie1983 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h Cite error: The named reference Henry2000 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Takeda2008 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference luck2014 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).