HD 30080

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HD 30080
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Caelum
Right ascension 04h 43m 09.29s[1]
Declination −30° 45′ 56.02″[1]
Apparent magnitude (V) 5.663±0.009[2]
Characteristics
Spectral type K3 III[3]
U−B color index +1.6[4]
B−V color index +1.39[4]
Astrometry
Radial velocity (Rv)−3.6±2[5] km/s
Proper motion (μ) RA: −30.790[1] mas/yr
Dec.: −67.724[1] mas/yr
Parallax (π)5.5680 ± 0.0859[1] mas
Distance586 ± 9 ly
(180 ± 3 pc)
Absolute magnitude (MV)−0.8[6]
Details
Mass1.16[7] M☉
Radius31.43+2.51
−1.77[1] R☉
Luminosity299±5[1] L☉
Surface gravity (log g)1.40[7] cgs
Temperature4,280+125
−161[1] K
Metallicity [Fe/H]0.00[7] dex
Rotational velocity (v sin i)<1[8] km/s
Other designations
CD−30 1968, HD 30080, HIP 21958, HR 1509, SAO 195250, GSC 07039-01416
Database references
SIMBADdata

HD 30080 (HR 1509) is a high proper motion star located in the southern constellation Caelum. With an apparent magnitude of 5.66, its faintly visible to the naked eye under ideal conditions. This star is currently 586 light years from Earth based on parallax, and is currently drifting closer to it, with a radial velocity of −3.6 km/s.

Physical properties[]

HD 30080 has a classification of "K3 III", which states it's a giant star that has exhausted hydrogen at its core and left the main sequence. It has a similar mass to the Sun, but has expanded to 31.43 times the Sun's girth. It radiates at 299 times the Sun's luminosity, and has an effective temperature of 4,280 K, which gives it a yellow-orange hue. Like many other giants, it rotates rather slowly.

References[]

  1. ^ a b c d e f g 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. ^ 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. ^ Houk, N. (1 January 1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0. Bibcode:1982mcts.book.....H.
  4. ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication. Bibcode:1953GCRV..C......0W.
  6. ^ Anderson, E.; Francis, Ch. (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.
  7. ^ a b c Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T. (2019-08-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
  8. ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014-01-01). "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.
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