HD 126053

HD 126053
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 14h 23m 15.28492s[1]
Declination +01° 14′ 29.6483″[1]
Apparent magnitude (V) 6.25[2]
Characteristics
Spectral type G1 V[3]
U−B color index +0.09[4]
B−V color index 0.639[2]
Astrometry
Radial velocity (Rv)−19.17 ± 0.06[2] km/s
Proper motion (μ) RA: +223.79[1] mas/yr
Dec.: −477.36[1] mas/yr
Parallax (π)58.17 ± 0.53[1] mas
Distance56.1 ± 0.5 ly
(17.2 ± 0.2 pc)
Details
Mass0.89[5] M☉
Radius0.93[6] R☉
Luminosity0.83[5] L☉
Luminosity (bolometric)0.812[7] L☉
Surface gravity (log g)4.57[8] cgs
Temperature5,722[8] K
Metallicity [Fe/H]−0.28[8] dex
Rotation22 d[9]
Rotational velocity (v sin i)3.08[3] km/s
Age5.490[10] Gyr
Other designations
BD+01° 2920, GJ 547, HD 126053, HIP 70319, HR 5384, SAO 120424.[11]

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 56 light years to this star.[1]

This star is considered a solar analog—meaning that it is photometrically analogous to the Sun.[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.[12]

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 4 Soubiran, C.; et al. (April 2013), "The catalogue of radial velocity standard stars for Gaia. I. Pre-launch release", Astronomy & Astrophysics, 552: 11, arXiv:1302.1905Freely accessible, Bibcode:2013A&A...552A..64S, doi:10.1051/0004-6361/201220927, A64.
  3. 1 2 Martínez-Arnáiz, R.; et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics, 520: A79, arXiv:1002.4391Freely accessible, Bibcode:2010A&A...520A..79M, doi:10.1051/0004-6361/200913725.
  4. ↑ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data, SIMBAD, Bibcode:1986EgUBV........0M.
  5. 1 2 3 Do Nascimento, J. D.; et al. (September 2010), "Rotation and lithium abundance of solar-analog stars. Theoretical analysis of observations", Astronomy and Astrophysics, 519: 9, arXiv:1006.3861Freely accessible, Bibcode:2010A&A...519A.101D, doi:10.1051/0004-6361/200811026, A101.
  6. ↑ Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy & Astrophysics, 367: 521–24, arXiv:astro-ph/0012289Freely accessible, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
  7. ↑ Eiroa, C.; et al. (July 2013). "DUst around NEarby Stars. The survey observational results". Astronomy & Astrophysics. 555: A11. arXiv:1305.0155Freely accessible. Bibcode:2013A&A...555A..11E. doi:10.1051/0004-6361/201321050.
  8. 1 2 3 Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770Freely accessible, Bibcode:2006AJ....132..161G, doi:10.1086/504637.
  9. ↑ Baliunas, S.; Sokoloff, D.; Soon, W. (1996). "Magnetic Field and Rotation in Lower Main-Sequence Stars: an Empirical Time-dependent Magnetic Bode's Relation?". Astrophysical Journal Letters. 457 (2): L99. Bibcode:1996ApJ...457L..99B. doi:10.1086/309891.
  10. ↑ Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal, 143 (6): 135, arXiv:1203.1966Freely accessible, Bibcode:2012AJ....143..135V, doi:10.1088/0004-6256/143/6/135.
  11. ↑ "HD 126053 -- High proper-motion Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2015-11-13.
  12. ↑ Frisch, P. C. (April 1993), "G-star astropauses - A test for interstellar pressure", Astrophysical Journal, Part 1, 407 (1): 198−206, Bibcode:1993ApJ...407..198F, doi:10.1086/172505.
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