HD 27274

HD 27274
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado
Right ascension 04h 15m 56.90154s[1]
Declination −53° 18′ 35.3067″[1]
Apparent magnitude (V) 7.63[2]
Characteristics
Spectral type K4.5 Vk:[3]
U−B color index +1.08[2]
B−V color index +1.12[2]
Astrometry
Radial velocity (Rv)−23.4±0.3[4] km/s
Proper motion (μ) RA: +784.529 mas/yr[1]
Dec.: +396.695 mas/yr[1]
Parallax (π)76.6638 ± 0.0146 mas[1]
Distance42.544 ± 0.008 ly
(13.044 ± 0.002 pc)
Absolute magnitude (MV)+7.06[5]
Details
Mass0.73±0.09[6] M☉
Radius0.70±0.05[6] R☉
Luminosity19.6±0.5%[1] L☉
Surface gravity (log g)4.64[7] cgs
Temperature4,602±80[7] K
Metallicity [Fe/H]+0.16±0.01[7] dex
Rotational velocity (v sin i)1[8] km/s
Age4.5[9] Gyr
Other designations
CD−53° 889, CPD−53° 672, GC 5176, GJ 167, HD 27274, HIP 19884, SAO 233456[10]
Database references
SIMBADdata
ARICNSdata

HD 27274, also known as Gliese 167, is a solitary,[11] orange hued star located in the southern constellation Dorado. It has an apparent magnitude of 7.63,[2] making it readily visible in binoculars, but not to the naked eye. Based on parallax measurements from the Gaia spacecraft, the star is known to be located 42.5 light-years (13.02 parsecs) away from the Solar System[1] However, it is drifting closer with a heliocentric radial velocity of −23 km/s. At its current distance, HD 27274 is dimmed down by 0.05 magnitudes due to interstellar dust.[12]

HD 27274 has a stellar classification of K4.5 Vk:,[3] indicating that it is a K-type main-sequence star with interstellar absorption features. However, there is uncertainty behind the classification. At present it has 73% the mass of the Sun and 70% of its radius.[6] It has an effective temperature of 4,602 K,[7] but its small size yields a luminosity only 19.6% that of the Sun.[1] HD 27274 is metal enriched, having an iron abundance 44.6% above solar levels.[7] The star spins with a projected rotational velocity of 1 km/s,[8] and is estimated to be 4.5 billion years old.[9] This is similar to the Sun's current age (4.6 Gyr).

  1. ^ a b c d e f g Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Koen2010 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Gontcharov2006 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 c Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Nordstrom2004 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Jenkins2006 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Rodriguez2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).