HD 192886

HD 192886
Location of HD 192886 and HD 192827 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 20h 19m 17.85169s[1]
Declination −47° 34′ 49.0453″[1]
Apparent magnitude (V) 6.13[2]
Characteristics
Spectral type F5 V[3] or F6 IV-V[4]
U−B color index +0.01[2]
B−V color index +0.46[2]
Astrometry
Radial velocity (Rv)−29.6±0.6[5] km/s
Proper motion (μ) RA: +192.878 mas/yr[1]
Dec.: −183.183 mas/yr[1]
Parallax (π)31.657 ± 0.028 mas[1]
Distance103.03 ± 0.09 ly
(31.59 ± 0.03 pc)
Absolute magnitude (MV)+3.69[6]
Details
Mass1.32+0.27
−0.16[7] M☉
Radius1.39±0.07[8] R☉
Luminosity2.92±0.01[1] L☉
Surface gravity (log g)4.32[9] cgs
Temperature6,459±52[10] K
Metallicity [Fe/H]+0.02[11] dex
Rotational velocity (v sin i)11.6±1.1[12] km/s
Age2.23[13] Gyr
Other designations
84 G. Telescopii[14], CD−47°13340, CPD−47°9478, GC 28213, HD 192886, HIP 100184, HR 7749, SAO 230150, LTT 8083[15]
Database references
SIMBADdata

HD 192886, also known as HR 7749 or rarely 84 G. Telescopii, is a solitary, yellowish-white hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.13,[2] making it barely visible to the naked eye, even in ideal conditions. The object is located relatively close at a distance of only 103 light years[1] but is drifting closer with a heliocentric radial velocity of −29.6 km/s.[5] At its current distance, HD 192886's brightness is diminished by 0.13 magnitudes due to extinction from interstellar dust.[16] It has an absolute magnitude of +3.69.[6]

HD 192886 has a stellar classification of F5 V,[3] making it an ordinary F-type main-sequence star. However, Richard O. Gray and colleagues give it a class of F6 IV-V,[4] indicating that it is slightly cooler and more evolved. It has 1.32 times the mass of the Sun[7] and 1.39 times the Sun's radius.[8] It radiates 2.92 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,459 K.[10] It has a solar metallicity ([Fe/H] = +0.02[11]) and is estimated to be 2.23 billion years old.[13] HD 192886 is more likely a main sequence star because it is only 0.24 magnitudes above the main sequence.[17] The star spins modestly with a projected rotational velocity of 11.6 km/s.[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 c d Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1978 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Gray2006 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 Cite error: The named reference Stassun2019 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 Netopil2017 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Masana2006 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Groot1996 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Ibukiyama2002 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference SIMBAD 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).
  17. ^ Cite error: The named reference Nordstrom2004 was invoked but never defined (see the help page).