46 Cancri

46 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 08h 45m 21.42336s[1]
Declination +30° 41′ 51.9066″[1]
Apparent magnitude (V) 6.122[2]
Characteristics
Spectral type G5 III[3]
B−V color index 0.912[2]
Astrometry
Radial velocity (Rv)–13.1[2] km/s
Proper motion (μ) RA: −9.828[1] mas/yr
Dec.: +0.916[1] mas/yr
Parallax (π)4.7700 ± 0.1025 mas[1]
Distance680 ± 10 ly
(210 ± 5 pc)
Absolute magnitude (MV)0.297[4]
Details
Mass2.65[2] M☉
Radius11[5] R☉
Luminosity125.9[2] L☉
Surface gravity (log g)2.80[4] cgs
Temperature4,966±74[2] K
Metallicity [Fe/H]−0.08[4] dex
Rotational velocity (v sin i)6.6[6] km/s
Age740[2] Myr
Other designations
46 Cnc, BD+31°1876, FK5 2690, HD 74485, HIP 42954, HR 3464, SAO 61029[7]
Database references
SIMBADdata

46 Cancri is a star in the zodiac constellation of Cancer, located around 680 light years away from the Sun. It is a dim, yellow-hued star, near the lower limits of visibility to the naked eye with an apparent visual magnitude of 6.12.[2] The star is moving closer to the Earth with a heliocentric radial velocity of –13.1 km/s.[2] It has a stellar classification of G5 III,[3] matching an aging giant star that has consumed the hydrogen at its core and evolved away from the main sequence.

46 Cancri is 740 million years old with 2.65[2] times the mass of the Sun. It has expanded to about 11[5] times the Sun's radius and is radiating 125.9[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,966 K.[2]

  1. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Hoffleit1964 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Liu2010 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference DeMedeiros2000 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).