HD 167042

HD 167042
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Draco
Right ascension 18h 10m 31.640s[1]
Declination +54° 17′ 11.59″[1]
Apparent magnitude (V) +5.97[2]
Characteristics
Evolutionary stage subgiant[3]
Spectral type K1 III.[4] or K1 IV[2]
U−B color index +0.716[5]
B−V color index +0.934[5]
Astrometry
Radial velocity (Rv)−17.88[6] km/s
Proper motion (μ) RA: +107.630 mas/yr[1]
Dec.: +247.345 mas/yr[1]
Parallax (π)20.1313 ± 0.0293 mas[1]
Distance162.0 ± 0.2 ly
(49.67 ± 0.07 pc)
Absolute magnitude (MV)2.48[3]
Details[2]
Mass1.88±0.07 M☉
Radius5.70±0.10 R☉
Luminosity12.47±0.54 L☉
Surface gravity (log g)3.2±0.1 cgs
Temperature4,547±49 K
Metallicity [Fe/H]−0.1 dex
Rotational velocity (v sin i)0.68[6] km/s
Age1.82±5.23 Gyr
Other designations
BD+54° 1950, GC 24820, HD 167042, HIP 89017, HR 6817, SAO 30784, PPM 36415, LTT 15382, Wolf 1415[7]
Database references
SIMBADdata

HD 167042 is a star with an orbiting exoplanet in the northern constellation of Draco. With an apparent visual magnitude of +5.97,[2] the star is dimly visible to the naked eye. It is located at a distance of 162 light years based on parallax measurements,[1] but it is drifting closer with a radial velocity of −18 km/s.[6] HD 164595 has a relatively large proper motion, traversing the celestial sphere at an angular rate of 0.270″ yr−1.[8]

The spectrum of HD 167042 presents as an evolved K-type giant star, an orange giant, with a stellar classification of K1 III.[4] However, the position of this star on the H-R diagram suggests it is still a subgiant star. When this star was a main sequence, it was white-hued mid to late A-type star based on its mass. It shows no significant magnetic activity in its chromosphere.[3] The star has 1.88 times the mass of the Sun and has expanded to 5.70 times the Sun's radius. It is radiating 12.5 times the luminosity of the Sun from its photosphere at an effective temperature of 4,547 K.[2]

  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 Cite error: The named reference Ligi2016 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Johnson2008 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Sharma_et_al_2020 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference mnras172_667 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Jofre2015 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).
  8. ^ Cite error: The named reference Lepine_Shara_2005 was invoked but never defined (see the help page).