HD 163145

Last updated
HD 163145
Observation data
Epoch J2000       Equinox J2000
Constellation Scorpius
Right ascension 17h 56m 47.41221s [1]
Declination −44° 20 31.9504 [1]
Apparent magnitude  (V)4.85 [2]
Characteristics
Spectral type K2 III [3]
B−V color index 1.176±0.062 [2]
Astrometry
Radial velocity (Rv)+35.60±0.45 [1]  km/s
Proper motion (μ)RA: −0.825±0.370 [1]   mas/yr
Dec.: −27.277±0.317 [1]   mas/yr
Parallax (π)10.6395 ± 0.2141  mas [1]
Distance 307 ± 6  ly
(94 ± 2  pc)
Absolute magnitude  (MV)0.12 [1]
Details
Radius 20.40+0.41
−0.66
[1]   R
Luminosity 147.0±3.4 [1]   L
Temperature 4,450+74
−46
[1]   K
Other designations
CD−44° 12201, FK5  3425, HD  163145, HIP  87846, HR  6675, SAO  228562 [4]
Database references
SIMBAD data

HD 163145 is a single [5] 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. [2] 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, [1] having come to within 49.2 light-years of the Sun some 1.871 million years ago. [2] It has an absolute magnitude of 0.12. [1]

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. [1]

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HD 61248 is a single star in the southern constellation of Carina. It has the Bayer designation Q Carinae, while HD 61248 is the star's identifier in the Henry Draper Catalogue. This star has an orange hue and is visible to the naked eye with an apparent visual magnitude of 4.93. Based upon parallax measurements, it is located approximately 402 light years in distance from the Sun. The object is drifting further away with a radial velocity of +63 km/s, having come to within 89.6 light-years some 1.8 million years ago.

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HD 73389 is a binary star system in the constellation Carina. It has the Bayer designation e2 Carinae; HD 73389 is the identifier from the Henry Draper Catalogue. This system is visible to the naked eye as a point of light with a combined apparent visual magnitude of +4.84. Based on parallax measurements, it is located at a distance of approximately 225 light years from the Sun. The system is drifting further away with a radial velocity of +25.6 km/s.

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<span class="mw-page-title-main">HD 102964</span> Star in the constellation Centaurus

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HD 100825 is a single star in the southern constellation of Centaurus. It has the Bayer designation C2 Centauri, while HD 100825 is the identifier from the Henry Draper catalogue. The star has a yellow-white hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.26. It is located at a distance of 187 light years from the Sun based on parallax, with an absolute magnitude of +1.31. The radial velocity is poorly constrained, but the star appears to be drifting further away from the Sun at the rate of around 5 km/s. It is a member of the Sirius supercluster of co-moving stars.

HD 125288 is a single star in the southern constellation of Centaurus. It has the Bayer designation v Centauri ; while HD 125288 is the star's identifier in the Henry Draper catalogue. The object has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.30. Based on parallax measurements, it is located at a distance of approximately 1,230 light years from the Sun. This is a candidate runaway star that is moving to the west and falling back into the Galactic plane. It has an absolute magnitude of −3.56.

HD 111915 is a single star in the southern constellation of Centaurus. It has the Bayer designation e Centauri, while HD 111915 is the star's identifier in the Henry Draper Catalogue. This is an aging giant star with a stellar classification of K3-4III. It is faintly visible to the naked eye with an apparent visual magnitude of +4.33. The distance to this star is approximately 294 light years based on parallax.

E Centauri is a single star in the southern constellation of Centaurus. It is a white-hued star that is dimly visible to the naked eye with an apparent visual magnitude of +5.34. The distance to this object is approximately 560 light years based on parallax, and it has an absolute magnitude of −0.97. It is drifting closer to the Sun with a radial velocity of +7 km/s, and it is a candidate member of the Lower Centaurus Crux subgroup of the Sco OB2 association.

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HD 78004 is a single star in the constellation Vela. It has the Bayer designation c Velorum, while HD 78004 is the identifier from the Henry Draper catalogue. The object has an orange hue and is visible to the naked eye with an apparent visual magnitude of 3.75. It is located at a distance of approximately 320 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +24 km/s.

HD 75710 is a single star in the constellation of Vela. It has an apparent visual magnitude of approximately 4.94, which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 2.7 mas, it is located about 1,200 light-years from the Sun.

HD 102350 is a single star in the constellation Centaurus. It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11. The distance to this star is approximately 390 light years based on parallax, but it is drifting closer with a radial velocity of −3 km/s. It has an absolute magnitude of −1.51.

<span class="mw-page-title-main">Zeta Indi</span> Star in the constellation Indus

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HD 143009 is a single star in the southern constellation of Lupus. It has an orange hue and is visible to the naked eye with an apparent visual magnitude of 4.99. The star lies at a distance of approximately 380 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −27 km/s. It has an absolute magnitude of −0.64.

HD 163376 is a single star in the southern constellation of Scorpius. It has a ruddy hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.88. The distance to this star, as determined using parallax measurements, is approximately 450 light years. It is drifting further from the Sun with a radial velocity of about 4 km/s. The absolute magnitude of this star is −0.82.

HD 79917 is a single star in the southern constellation of Vela. It has the Bayer designation l Velorum, while HD 79917 is the star's identifier from the Henry Draper Catalogue. The star has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.92. It is located at a distance of approximately 228 light-years from the Sun based on parallax, and is drifting further away with a radial velocity of +1.6 km/s.

ξ Gruis, Latinised as Xi Gruis, is a solitary star in the southern constellation of Grus, near the constellation border with Microscopium. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.3. The star is located about 430 light-years distant from the Sun, based on parallax, but is drifting closer with a radial velocity of −10 km/s.

HR 4339 is a single star in the equatorial constellation of Hydra. It was designated as Beta Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries by the IAU in 1930 saw it transferred to Hydra. It has a white hue and is just visible to the naked eye with an apparent visual magnitude of 5.79. The distance to this star, as determined from parallax measurements, is approximately 366 light years. It is drifting further away with a radial velocity of +1.3 km/s.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 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.
  2. 1 2 3 4 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.
  3. 1 2 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. "HD 163145". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2018-08-03.
  5. 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.