HD 84607

HD 84607
Location of HD 84607 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sextans
Right ascension 09h 46m 23.61048s[1]
Declination +01° 47′ 08.1160″[1]
Apparent magnitude (V) 5.64±0.01[2]
Characteristics
Spectral type F0/2 IV[3]
U−B color index +0.12[4]
B−V color index +0.34[4]
Astrometry
Radial velocity (Rv)7.8±0.3[5] km/s
Proper motion (μ) RA: −55.710 mas/yr[1]
Dec.: −40.437 mas/yr[1]
Parallax (π)13.0508 ± 0.0651 mas[1]
Distance250 ± 1 ly
(76.6 ± 0.4 pc)
Absolute magnitude (MV)+1.12[6]
Details
Mass2.01[7] M☉
Radius3.43±0.17[8] R☉
Luminosity26.29+0.34
−0.31[1] L☉
Surface gravity (log g)3.61±0.08[9] cgs
Temperature6,919±111[10] K
Metallicity [Fe/H]+0.14[11] dex
Rotation1.51 d[12]
Rotational velocity (v sin i)93.1±4.7[12] km/s
Age1.06[7] Gyr
Other designations
1 G. Sextantis[13], AG+02°1299, BD+02°2246, FK5 2782, GC 13459, HD 84607, HIP 47960, HR 3879, SAO 117901, TIC 455274792[14]
Database references
SIMBADdata

HD 84607 (HR 3879; 1 G. Sextantis) is a solitary star[15] located in the equatorial constellation Sextans. It is faintly visible to the naked eye as a yellowish-white hued point of light with an apparent magnitude of 5.64.[2] The object is located relatively close at a distance of 250 light-years based on Gaia DR3 parallax measurements,[1] but it is receding with a heliocentric radial velocity of 7.8 km/s.[5] At its current distance, HD 84607's brightness is diminished by an interstellar extinction of 0.18 magnitudes[16] and it has an absolute magnitude +1.12.[6]

HD 84607 has a stellar classification of F0/2 IV,[3] indicating that it is a slightly evolved star with the characteristics of a F0 and F2 subgiant. At the age of 1.06 billion years,[7] the star is ceasing hydrogen fusion at its core and is cooling and expanding onto the red giant branch. It has 2.01 times the mass of the Sun[7] and a slightly enlarged radius 3.43 times that of the Sun.[8] It radiates 26.29 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,919 K.[10] HD 84607 is metal enriched with an iron abundance of [Fe/H] = +0.14 or 138% of the Sun's[11] and it spins fairly quickly with a projected rotational velocity of 93.1 km/s within 1.51 days.[12]

  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 Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference AP1999 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Casagrande2011 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 c Cite error: The named reference Reiners2006 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).