HD 126053

HD 126053
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 14h 23m 15.285s[1]
Declination +01° 14′ 29.64″[1]
Apparent magnitude (V) 6.25[2]
Characteristics
HD 126053 A
Evolutionary stage Main sequence
Spectral type G1 V[3]
U−B color index +0.09[4]
B−V color index 0.639[2]
HD 126053 B
Evolutionary stage Brown dwarf
Spectral type T8[5]
Astrometry
Radial velocity (Rv)−19.17±0.06[2] km/s
Proper motion (μ) RA: 223.531 mas/yr[1]
Dec.: −478.275 mas/yr[1]
Parallax (π)57.2706 ± 0.0375 mas[1]
Distance56.95 ± 0.04 ly
(17.46 ± 0.01 pc)
Details
HD 126053 A
Mass0.89[6] M☉
Radius0.93[7] R☉
Luminosity0.83[6] L☉
Luminosity (bolometric)0.812[8] L☉
Surface gravity (log g)4.57[9] cgs
Temperature5,722[9] K
Metallicity [Fe/H]−0.28[9] dex
Rotation22 d[10]
Rotational velocity (v sin i)3.08[3] km/s
Age5.490[11] Gyr
HD 126053 B
Mass0.019-0.047[5] M☉
Radius0.080-0.099[5] R☉
Temperature680±55[5] K
Metallicity [Fe/H]−0.38±0.06[5] dex
Other designations
BD+01°2920, GJ 547, HD 126053, HIP 70319, HR 5384, SAO 120424[12]
Database references
SIMBADdata

HD 126053 is the Henry Draper Catalogue designation for a star in the equatorial constellation of Virgo. It has an apparent magnitude of 6.25,[2] which means it is faintly visible to the naked eye. According to the Bortle scale, it requires dark suburban or rural skies to view. Parallax measurements made by the Hipparcos spacecraft provide an estimated distance of 57 light years to this star.[1] It is drifting closer with a heliocentric radial velocity of −19.2 km/s.[2]

This star is considered a solar analog—meaning that it is photometrically analogous to the Sun.[6] The physical properties of this star are similar to the Sun, although it is metal poor.[5] Like the Sun, it has a magnetic activity cycle. It shares a common proper motion through space with the spectroscopic binary star system HD 122742, and in the past the three may have formed a triple star system. In the Bright Star Catalogue, it was noted as having an infrared excess. This may have been accreted from the HD 122742 system when the three stars were closer to each other.[13]

In 2012, a brown dwarf was discovered orbiting this star at a distance of 2630 AU.[5]

  1. ^ a b c d e Cite error: The named reference GaiaEDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference aa552_A64 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference MartínezArnáiz2010 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference MERMILLIOD was invoked but never defined (see the help page).
  5. ^ a b c d e f g Cite error: The named reference Pinfield2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference aa519_A101 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference cadars was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference aa555_A11 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference aj132_1_161 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference ApJL457 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference aj143_6_135 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference apj407_1_198 was invoked but never defined (see the help page).