HD 111232

HD 111232
Observation data
Epoch J2000      Equinox J2000
Constellation Musca
Right ascension 12h 48m 51.75258s[1]
Declination −68° 25′ 30.5471″[1]
Apparent magnitude (V) 7.59[2]
Characteristics
Spectral type G8 V Fe-1.0[3]
B−V color index 0.701±0.003[2]
Astrometry
Radial velocity (Rv)104.53±0.13[4] km/s
Proper motion (μ) RA: 27.283±0.021[4] mas/yr
Dec.: 112.918±0.024[4] mas/yr
Parallax (π)34.6094 ± 0.0239 mas[4]
Distance94.24 ± 0.07 ly
(28.89 ± 0.02 pc)
Absolute magnitude (MV)5.25[2]
Details[5]
Mass0.80±0.02 M☉
Radius0.88±0.01 R☉
Luminosity0.700±0.003 L☉
Surface gravity (log g)4.45±0.02 cgs
Temperature5,648±30 K
Metallicity [Fe/H]−0.32[6] dex
Rotation30.7 d[7]
Rotational velocity (v sin i)0.421[6] km/s
Age11.7±1.4 Gyr
Other designations
CPD−67°2079, Gaia DR2 5855730584310531200, HD 111232, HIP 62534, 2MASS J12485177-6825304[8]
Database references
SIMBADdata

HD 111232 is a star in the southern constellation of Musca. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 7.59.[2] The distance to this star is 94.5 light years based on parallax.[1] It is drifting away from the Sun with a radial velocity of +104 km/s,[2] having come to within 14.1 light-years some 264,700 years ago.[9] The absolute magnitude of this star is 5.25,[2] indicating it would have been visible to the naked eye at that time.

This is an ancient, thick disk population II[10][7] star with an estimated age of twelve billion years.[5] It is a G-type main-sequence star with a stellar classification of G8 V Fe-1.0,[3] indicating an anomalous underabundance of iron in the stellar atmosphere. The star has 80% of the mass of the Sun and 88% of the Sun's radius. It is spinning slowly with a projected rotational velocity of 0.4 km/s.[6] X-ray emission has not been detected, suggesting a low level of coronal activity.[11][12] The star is radiating 70% of the luminosity of the Sun from its photosphere at an effective temperature of 5,648 K.[5]

  1. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray2003 was invoked but never defined (see the help page).
  4. ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  5. ^ a b c Cite error: The named reference bonfanti2015 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Soto2018 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Mayor2004 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Bailer2018 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Fuhrmann2019 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Poppenhaeger2010 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Minniti2009 was invoked but never defined (see the help page).