HD 6114

HD 6114
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
HD 6114 A
Right ascension 01h 03m 01.54722s[1]
Declination +47° 22′ 34.1796″[1]
Apparent magnitude (V) 6.76[2]
HD 6114 B
Right ascension 01h 03m 01.55854s[3]
Declination +47° 22′ 33.0207″[3]
Apparent magnitude (V) 8.07[2]
Characteristics
Spectral type A9 V[4][5]
Apparent magnitude (V) 6.46[6]
B−V color index 0.248±0.012[6]
Astrometry
HD 6114 A
Radial velocity (Rv)+2.4±2.8[7] km/s
Proper motion (μ) RA: 87.411±0.040[1] mas/yr
Dec.: −15.153±0.024[1] mas/yr
Parallax (π)9.2058 ± 0.0392 mas[1]
Distance354 ± 2 ly
(108.6 ± 0.5 pc)
Absolute magnitude (MV)1.56[6]
HD 6114 B
Proper motion (μ) RA: 87.190±0.103[3] mas/yr
Dec.: −23.426±0.042[3] mas/yr
Parallax (π)9.4797 ± 0.0651 mas[3]
Distance344 ± 2 ly
(105.5 ± 0.7 pc)
Orbit[8]
Period (P)450 yr
Semi-major axis (a)0.816″
Eccentricity (e)0.80
Inclination (i)87.0°
Longitude of the node (Ω)176.7°
Periastron epoch (T)1902.0
Argument of periastron (ω)
(secondary)		180°
Details
HD 6114 A
Mass1.65[9] M☉
Luminosity21.2+3.5
−3.0[10] L☉
Surface gravity (log g)4.03±0.14[9] cgs
Temperature7,611±259[9] K
Rotational velocity (v sin i)149[10] km/s
Age863[9] Myr
Other designations
BD+46° 243, HD 6114, HIP 4911, HR 289, SAO 36875, ADS 862, WDS J01030+4723[11]
Database references
SIMBADdata

HD 6114 is a visual binary star system in the northern constellation of Andromeda. With a combined apparent magnitude of 6.46,[6] the star can only be seen with the naked eye by keen-eyed observers even on the best of nights. Based upon an annual parallax shift of 10.4 mas[1] as seen from Earth's orbit, the system is located approximately 108 parsecs (350 ly) distant.

The binary nature of this system was discovered by O. Struve in 1864. It consists of a magnitude 6.76 primary component with a dimmer magnitude 8.07 secondary. As of 2015 the pair had an angular separation of 1.30″ along a position angle of 175°.[2] The two stars orbit each other with a period of 450 years with an eccentricity of 0.80.[8]

The primary is an A-type main-sequence star with a stellar classification of A9 V.[4][5] At the estimated age of 863 million years, it is spinning rapidly with a projected rotational velocity of 149 km/s.[10] The star has 1.65[9] times the mass of the Sun and is radiating 21[10] times the Sun's luminosity from its photosphere at an effective temperature of 7,611 K.[9]

  1. ^ a b c d e f Cite error: The named reference Gaia EDR3 for A was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Gaia EDR3 for B was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1974 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Abt1995 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Hartkopf2006 was invoked but never defined (see the help page).
  9. ^ a b c d e f Cite error: The named reference David2015 was invoked but never defined (see the help page).
  10. ^ a b c d Cite error: The named reference zorec2012 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).