HD 75171

HD 75171
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Volans
Right ascension 08h 44m 29.9582s[1]
Declination −65° 49′ 31.550″[1]
Apparent magnitude (V) 6.02±0.01[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A4 V[4]
U−B color index +0.08[5]
B−V color index +0.20[5]
Astrometry
Radial velocity (Rv)10.7±0.5[6] km/s
Proper motion (μ) RA: −63.156 mas/yr[1]
Dec.: +103.462 mas/yr[1]
Parallax (π)17.0428 ± 0.0235 mas[1]
Distance191.4 ± 0.3 ly
(58.68 ± 0.08 pc)
Absolute magnitude (MV)+2.19[7]
Details
Mass1.81[8] M☉
Radius1.84±0.05[9] R☉
Luminosity11.7±0.4[3] L☉
Surface gravity (log g)4.33[10] cgs
Temperature7,998±272[10] K
Metallicity [Fe/H]−0.06[11] dex
Rotational velocity (v sin i)96±1[12] km/s
Age630[8] Myr
Other designations
41 G. Volantis, CPD−65°1013, FK5 2691, GC 12090, HD 75171, HIP 42895, HR 3495, SAO 250317
Database references
SIMBADdata

HD 75171, also known as HR 3495, is a solitary,[8] white hued star located in the southern constellation of Volans. It has an apparent magnitude of 6.02,[2] making it faintly visible to the naked eye under ideal conditions. The object is relatively close at a distance of 191 light years but is receding with a heliocentric radial velocity of 10.7 km/s. Eggen (1995) lists it as a probable member of the Hyades Supercluster.

HD 75171 has a stellar classification of A4 V,[4] indicating that it is an ordinary A-type main-sequence star. It has also been given a cooler class of A9 V.[13] It has 1.81 times the mass of the Sun[8] and a diameter of 1.84 R☉.[9] It radiates at 12 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 7,998 K.[10] Like most hot stars, it spins quickly with a projected rotational velocity of 96 km/s.[12] HD 75171 is estimated to be 630 million years old,[8] well around the age of the actual Hyades cluster. Zorec and Royer (2012) model it to be a dwarf star 50.4% through its main sequence lifetime,[3] and Gaia Data Release 3 models also show a star roughly halfway through its main sequence life.[1] The star has a near solar metallicity, with the iron abundance being 87% that of the Sun.[11]

  1. ^ a b c d e Cite error: The named reference DR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference DeRosa2013 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference David2015 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Netopil2017 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Díaz2011 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Evans1966 was invoked but never defined (see the help page).