Gamma Ceti

γ Ceti
Diagram showing star positions and boundaries of the Cetus constellation and its surroundings
Location of γ Ceti (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cetus
Right ascension 02h 43m 18.03910s[1]
Declination +03° 14′ 08.9390″[1]
Apparent magnitude (V) 3.47[2] (3.56/6.63/10.16)[3]
Characteristics
Spectral type A3 V + F3 V + K5[3]
U−B color index +0.07[2]
B−V color index +0.09[2]
Astrometry
Radial velocity (Rv)–5.1[4] km/s
Proper motion (μ) RA: –146.10[1] mas/yr
Dec.: –146.12[1] mas/yr
Parallax (π)40.97 ± 0.63 mas[1]
Distance80 ± 1 ly
(24.4 ± 0.4 pc)
Absolute magnitude (MV)+1.53[5]
Details
γ Cet A
Mass1.88[6] M☉
Radius1.9[7] R☉
Luminosity21[5] L☉
Surface gravity (log g)4.3[8] cgs
Temperature8,551[8] K
Metallicity [Fe/H]0.00[9] dex
Rotational velocity (v sin i)186[10] km/s
Age647[8] Myr
γ Cet B
Mass1.17[6] M☉
Temperature6,051[8] K
Rotational velocity (v sin i)10[8] km/s
Other designations
Kaffaljidhma, γ Cet, 86 Ceti, BD+02 422, HD 16970, HIP 12706, HR 804, SAO 110707, WDS 02433+0314[11]
Database references
SIMBADGamma Ceti system
A
B
C

Gamma Ceti (γ Ceti, abbreviated Gamma Cet, γ Cet) is a triple star system in the equatorial constellation of Cetus. It has a combined apparent visual magnitude of 3.47.[2] Based upon parallax measurements, this star is located at a distance of about 80 light-years (24.4 parsecs) from the Sun.[1]

The three components are designated Gamma Ceti A (officially named Kaffaljidhma /ˌkæfəlˈdʒɪdmə/, the traditional name for the entire system),[12] B and C.

  1. ^ a b c d e f Cite error: The named reference Leeuwen was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Johnson was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Eggleton was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gcsrv was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference tokovinin was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference lang2006 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference gullikson was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Gray2003 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Royer2007 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ "Naming Stars". International Astronomical Union. Archived from the original on 2017-12-22. Retrieved 16 December 2017.