HD 55151

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HD 55151
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Volans
Right ascension 07h 06m 14.313s[1]
Declination −68 50° 15.29′[1]
Apparent magnitude (V) 6.474 ± 0.009[2]
Characteristics
Evolutionary stage red giant
Spectral type K0III[3]
B−V color index 1.04[4]
Astrometry
Radial velocity (Rv)−13.00[1] km/s
Proper motion (μ) RA: 5.996[1] mas/yr
Dec.: −1.922[1] mas/yr
Parallax (π)6.4247 ± 0.0196[1] mas
Distance508 ± 2 ly
(155.6 ± 0.5 pc)
Details
Mass2[5] M☉
Radius9.48[5] R☉
Luminosity70[6] L☉
Temperature5025[6] K
Rotational velocity (v sin i)<1[citation needed] km/s
Other designations
HD 55151 CD-68 447 CPD-68 591, GSC 09178-00964, HIC 34270, HIP 34270, HR 2712
Database references
SIMBADdata

HD 55151, also as HR 2712, is a solitary star in the constellation Volans. The star is located near the borders, and has a radial velocity of −13 km/s. This radial velocity means the star is drifting closer to the Solar System. With an apparent magnitude of 6.47, it is almost impossible to see with the naked eye.[2]

Properties[]

This is a "K0III" star. The "K0" in the spectral class means the star is an early K-type star, which corresponds to its temperature of 5025 K. This gives the star a yellow-orange hue. The "III" in its luminosity class means it's a giant star with twice the mass of the Sun, but has expanded to almost 10 times its radius. It has a luminosity of 70 times that of the latter, and rotates slowly, just like many giants.

Observation[]

HD 55151 was observed by TESS. As of 2021, there is not enough evidence for a planetary system, and the stellar properties were observed.[5]

References[]

  1. ^ Jump up to: a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
  2. ^ Jump up to: a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000-03-01). "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. ^ Kharchenko, N. V. (2001-10-01). "All-sky compiled catalogue of 2.5 million stars". Kinematika I Fizika Nebesnykh Tel. 17 (5): 409–423. Bibcode:2001KFNT...17..409K. ISSN 0233-7665.
  4. ^ ESA (1997). "The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission". Esa Special Publication. 1200. Bibcode:1997ESASP1200.....E.
  5. ^ Jump up to: a b c Stassun, Keivan G.; Oelkers, Ryan J.; Paegert, Martin; Torres, Guillermo; Pepper, Joshua; De Lee, Nathan; Collins, Kevin; Latham, David W.; Muirhead, Philip S.; Chittidi, Jay; Rojas-Ayala, Bárbara (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. hdl:1721.1/124721. ISSN 0004-6256. S2CID 166227927.
  6. ^ Jump up to: a b Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (2016-03-01). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. ISSN 0004-6256. S2CID 119246448.
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