HD 30562

HD 30562
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus
Right ascension 04h 48m 36.38509s[1]
Declination −05° 40′ 26.5577″[1]
Apparent magnitude (V) 5.77[2]
Characteristics
Spectral type G2IV[3][2] or G5V[4] or F8V[5][6]
Apparent magnitude (B) 6.401[2]
Apparent magnitude (J) 4.984±0.262[2]
Apparent magnitude (H) 4.574±0.266[2]
Apparent magnitude (K) 4.310±0.049[2]
B−V color index 0.631±0.003[2]
Astrometry
Radial velocity (Rv)77.24±0.09[7] km/s
Proper motion (μ) RA: 311.406 mas/yr[1]
Dec.: −248.834 mas/yr[1]
Parallax (π)38.2495 ± 0.0399 mas[1]
Distance85.27 ± 0.09 ly
(26.14 ± 0.03 pc)
Absolute magnitude (MV)3.66[2]
Details[6]
Mass1.25±0.03 M☉
Radius1.57±0.03 R☉
Luminosity2.82±0.01 L☉
Surface gravity (log g)4.14±0.02 cgs
Temperature5,983±37 K
Metallicity [Fe/H]0.23[8] dex
Rotation24.2 days[5]
Rotational velocity (v sin i)5.8[8] km/s
Age4.4±0.6 Gyr
Other designations
BD–05°1044, GJ 177.1, HD 30562, HIP 22336, HR 1536, SAO 131504, PPM 187358, NLTT 13980, GCRV 2828[9]
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata

HD 30562 is a star in the equatorial constellation of Eridanus. It has a golden hue and can be viewed with the naked eye under good seeing conditions, having an apparent visual magnitude of 5.77.[2] The distance to this star is 85 light years based on parallax.[1] It is drifting further away with a high radial velocity of +77 km/s,[7] having come to within 46.8 light-years some 236,000 years ago.[2]

The stellar classification of HD 30562 has varied somewhat depending on the study, including types G2IV,[3] G5V,[4] and F8V.[5] It is about 4.4[6] billion years old and appears to be chromospherically inactive.[5] The star is spinning with a projected rotational velocity of 5.8 km/s,[8] giving it a rotation period of 24.2 days.[5] Based on the abundance of iron appearing in the sprectrum, the metallicity of this star, what astronomers term the abundance of elements with higher atomic numbers than helium, is about 70% higher than in the Sun.[8] HD 30562 has 25% greater mass than the Sun and a 57% larger radius. The star is radiating almost three times the luminosity of the Sun from its photosphere at an effective temperature of 5,983 K.[6]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray_et_al_2006 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Houk_Swift_1999 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Fischer2009 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Bonfanti2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Nidever_et_al_2002 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Earle2017 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).