HD 163145

In today's world, HD 163145 is a topic that generates great interest and debate in society. For years, HD 163145 has captured the attention of people of all ages, genders, social classes and nationalities, due to its relevance and complexity. As time goes on, HD 163145 continues to be a topical topic that raises conflicting opinions and awakens emotions in people. Whether due to its impact on everyday life, its historical relevance or its influence on the future, HD 163145 has become a point of common interest that motivates us to reflect and seek answers. In this article, we will explore the different aspects and perspectives related to HD 163145, with the aim of contributing to the understanding and analysis of this intriguing and significant topic.

HD 163145
Observation data
Epoch J2000      Equinox J2000
Constellation Scorpius[1]
Right ascension 17h 56m 47.41221s[2]
Declination −44° 20′ 31.9504″[2]
Apparent magnitude (V) 4.85[1]
Characteristics
Spectral type K2 III[3]
B−V color index 1.176±0.062[1]
Astrometry
Radial velocity (Rv)+35.60±0.45[2] km/s
Proper motion (μ) RA: −0.825±0.370[2] mas/yr
Dec.: −27.277±0.317[2] mas/yr
Parallax (π)10.6395±0.2141 mas[2]
Distance307 ± 6 ly
(94 ± 2 pc)
Absolute magnitude (MV)0.12[1]
Details
Mass1.5[4] M☉
Radius20.40+0.41
−0.66[2] R☉
Luminosity147.0±3.4[2] L☉
Surface gravity (log g)2.17[4] cgs
Temperature4,450+74
−46[2] K
Metallicity −0.04[4] dex
Other designations
CD−44°12201, FK5 3425, HD 163145, HIP 87846, HR 6675, SAO 228562[5]
Database references
SIMBADdata

HD 163145 is a single[6] star in the constellation Scorpius, near the southeast constellation border with Corona Australis. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.85.[1] Based on parallax measurements, it is located at a distance of approximately 307 light years from the Sun. The star is drifting further away with a radial velocity of +35.6 km/s,[2] having come to within 49.2 light-years of the Sun some 1.871 million years ago.[1] It has an absolute magnitude of 0.12.[2]

This object is an aging giant star with a stellar classification of K2 III.[3] With the supply of hydrogen exhausted at its core, the star has cooled and expanded off the main sequence. At present it has 20 times the radius of the Sun. The star is radiating 147 times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,450 K.[2]

References

  1. ^ a b c d e f Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  2. ^ a b c d e f g h i j k l Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  3. ^ a b Houk, N. (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 2. Dept. of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
  4. ^ a b c Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv:2407.06963. Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
  5. ^ "HD 163145". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-08-03.
  6. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.