HD 55151

Last updated
HD 55151
Observation data
Epoch J2000       Equinox J2000
Constellation Volans
Right ascension 07h 06m 14.31s [1]
Declination −68° 50′ 15.29″ [1]
Apparent magnitude  (V)6.47±0.01 [2]
Characteristics
Spectral type K0 III [3]
U−B color index +0.87 [4]
B−V color index +1.04 [4]
Astrometry
Radial velocity (Rv)−13±0.14 [1]  km/s
Proper motion (μ)RA: +5.690  mas/yr [1]
Dec.: -2.103  mas/yr [1]
Parallax (π)6.3734 ± 0.0192  mas [1]
Distance 512 ± 2  ly
(156.9 ± 0.5  pc)
Absolute magnitude  (MV)+0.43 [5]
Details
Mass 2.00±0.27 [6]   M☉
Radius 12.03±0.25 [1]   R☉
Luminosity 70.6±0.4 [1]   L☉
Surface gravity (log g)2.77±0.14 [7]   cgs
Temperature 4,824+51
−48 [1]   K
Metallicity [Fe/H]−0.02±0.05 [7]   dex
Rotational velocity (v sin i)<1 [8]  km/s
Other designations
7 G. Volantis, CD−68 447, HD  55151, HIP  34270, HR  2712, SAO  249740
Database references
SIMBAD data

HD 55151 (HR 2712) is a solitary star located in the circumpolar constellation Volans. With an apparent magnitude of 6.47, [2] it is near the limit of naked eye visibility. The star is located 512 light years [1] away from the Solar System, but is drifting closer with a heliocentric radial velocity of -13 km/s. [1]

HD 55151 has a stellar classification of K0 III, [3] which states that it is an early K-type star that has exhausted hydrogen at its core and left the main sequence. It has twice the Sun's mass, [6] but has expanded to 12 times the Sun's girth. [1] It radiates at 70 solar luminosities [1] from its enlarged photosphere at an effective temperature of 4,824 K, [1] which gives it the orangish-yellow hue of a K-type star. HD 55151 belongs to the thin disk population, [9] and is slightly metal deficient. However, it has a projected rotational velocity that is too low to be measured. [8]

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<span class="mw-page-title-main">Iota Telescopii</span> K-type giant; Telescopium

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HD 46568 is a solitary star in the southern constellation Columba. It is faintly visible to the naked eye with an apparent magnitude of 5.25. Parallax measurements place the object at a distance of 284 light years and is currently receding with a heliocentric radial velocity of 39 km/s.

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HD 210056, also known as HR 8432, is a solitary orange hued star located in the southern circumpolar constellation Octans. Eggen (1993) listed it as a member of the old disk population.

<span class="mw-page-title-main">HD 175219</span> K-type giant; Corona Australis

HD 175219, also known as HR 7122, is a solitary, orange hued star located in the southern constellation Corona Australis. It has an apparent magnitude of 5.35, allowing it to be faintly visible to the naked eye. The object is located relatively close at a distance of 314 light years based on Gaia DR3 parallax measurements but is drifting closer with a heliocentric radial velocity of −21.1 km/s. At its current distance, HD 175219's brightness is diminished by 0.26 magnitudes due to interstellar dust. It has an absolute magnitude of +0.57.

<span class="mw-page-title-main">HD 182893</span> Star in the constellation Telescopium

HD 182893, also known as HR 7388 or rarely 60 G. Telescopii, is a solitary, yellowish-orange hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.13, making it barely visible to the naked eye even under ideal conditions. Based on Gaia DR3 parallax measurements, the object is estimated to be 328 light years away. However, it is approaching the Solar System with a heliocentric radial velocity of −27 km/s. At its current distance, HD 182893's brightness is diminished by 0.19 magnitudes due to interstellar dust. It has an absolute magnitude of +1.23.

<span class="mw-page-title-main">HD 185075</span> Star in the constellation Telescopium

HD 185075, also known as HR 7459 or rarely 65 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of 6.26, placing it near the limit for naked eye visibility, even under ideal conditions. Gaia DR3 parallax measurements imply a distance of 422 light years and it is currently receding with a heliocentric radial velocity of 14.8 km/s. At its current distance, HD 185075's brightness is diminished by 0.23 magnitudes due to interstellar dust and it has an absolute magnitude of +0.92.

<span class="mw-page-title-main">HD 179433</span> G-type giant; Corona Australis

HD 179433, also known as HR 7281 or rarely 49 G. Coronae Australis, is a solitary star located in the southern constellation Corona Australis. It is faintly visible to the naked eye as a yellow-hued point of light with an apparent magnitude of 5.91. Gaia DR3 parallax measurements imply a distance of 329 light-years, and it is currently drifting closer with a heliocentric radial velocity of −35.1 km/s. At its current distance, HD 179433's brightness is diminished by interstellar extinction of 0.22 magnitudes and it has an absolute magnitude of +1.11.

Pi<sup>2</sup> Doradus G-type giant in the constellation Dorado

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (1 March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN   0004-6361.
  3. 1 2 Houk, N.; Cowley, A. P. (1 January 1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Bibcode:1975mcts.book.....H.
  4. 1 2 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ↑ Anderson, E.; Francis, Ch. (1 May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN   1063-7737. S2CID   119257644.
  6. 1 2 Stassun, Keivan G.; Oelkers, Ryan J.; et al. (1 September 2018). "The TESS Input Catalog and Candidate Target List". The Astronomical Journal. 156 (3): 102. arXiv: 1706.00495 . Bibcode:2018AJ....156..102S. doi: 10.3847/1538-3881/aad050 . ISSN   0004-6256. S2CID   73582386.
  7. 1 2 Alves, S.; Benamati, L.; Santos, N. C.; Adibekyan, V. Zh.; Sousa, S. G.; Israelian, G.; De Medeiros, J. R.; Lovis, C.; Udry, S. (1 April 2015). "Determination of the spectroscopic stellar parameters for 257 field giant stars★". Monthly Notices of the Royal Astronomical Society. 448 (3): 2749–2765. arXiv: 1503.02556 . Bibcode:2015MNRAS.448.2749A. doi:10.1093/mnras/stv189. ISSN   0035-8711.
  8. 1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (1 January 2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN   0004-6361.
  9. ↑ Adibekyan, V. Zh.; Benamati, L.; Santos, N. C.; Alves, S.; Lovis, C.; Udry, S.; Israelian, G.; Sousa, S. G.; Tsantaki, M.; Mortier, A.; Sozzetti, A.; De Medeiros, J. R. (1 June 2015). "Chemical abundances and kinematics of 257 G-, K-type field giants. Setting a base for further analysis of giant-planet properties orbiting evolved stars". Monthly Notices of the Royal Astronomical Society. 450 (2): 1900–1915. arXiv: 1503.08346 . Bibcode:2015MNRAS.450.1900A. doi:10.1093/mnras/stv716. ISSN   0035-8711.
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