HD 186302

HD 186302
Location of HD 186302 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 19h 49m 06.43036s[1]
Declination −70° 11′ 16.7033″[1]
Apparent magnitude (V) 8.76±0.01[2]
Characteristics
Spectral type G3/5 V[3]
B−V color index 0.67[4]
Astrometry
Radial velocity (Rv)−1.3±0.3[5] km/s
Proper motion (μ) RA: −24.004[1] mas/yr
Dec.: −38.804[1] mas/yr
Parallax (π)17.6309 ± 0.0147 mas[1]
Distance185.0 ± 0.2 ly
(56.72 ± 0.05 pc)
Absolute magnitude (MV)+5.11[6]
Details[7]
Mass0.97±0.01 M☉
Radius0.95±0.01 R☉
Surface gravity (log g)4.47±0.01 cgs
Temperature5,675±15 K
Metallicity [Fe/H]−0.03[8] dex
Rotational velocity (v sin i)2.30[8] km/s
Age4.5±0.81 Gyr
Other designations
HD 186302, HIP 97507, 2MASS J19490644-7011167, CD−70°1724
Database references
SIMBADdata

HD 186302 (also designated HIP 97507)[9] is a star in the constellation of Pavo. It is 185 light-years (57 parsecs) away from Earth, with an apparent magnitude of 8.76.[9] It was identified in November 2018 as a potential solar sibling to the Sun. Similar in spectrum and size, it was suspected to have formed in the same stellar nursery as the Sun 4.6 billion years ago.[10] However, a common origin with the Sun was found to be unlikely in a 2019 paper, as HD 186302's galactic orbit is very different from the Sun's.[11]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gomes2021 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Adibekyan2014 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference chavero2021 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference universetoday was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference leung2020 was invoked but never defined (see the help page).