HD 63584

HD 63584 (HR 3038) is a solitary star in the southern circumpolar constellation Volans. With an apparent magnitude of 6.15,[2] it is barely visible to the naked eye under ideal conditions. The star is located 420 light years[1] away based on parallax, but is drifting away with a radial velocity of 10.4 km/s.[5]

HD 63584
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 07h 44m 13.00s[1]
Declination –69° 49′ 17.80″[1]
Apparent magnitude (V) 6.15±0.01[2]
Characteristics
Spectral type A0 IV/V[3]
U−B color index –0.09[4]
B−V color index –0.06[4]
Astrometry
Radial velocity (Rv)10.4±1.1[5] km/s
Proper motion (μ) RA: –41.901[1] mas/yr
Dec.: 9.492[1] mas/yr
Parallax (π)7.7630 ± 0.0578 mas[1]
Distance420 ± 3 ly
(128.8 ± 1.0 pc)
Absolute magnitude (MV)+0.68[6]
Details
Mass2.58±0.05[7] M☉
Radius3.09±0.37[8] R☉
Luminosity60±6[7] L☉
Surface gravity (log g)3.84±0.29[8] cgs
Temperature9,954±46[7] K
Metallicity71% solar
Metallicity [Fe/H]–0.15[9] dex
Rotational velocity (v sin i)19[10] km/s
Age256±23[7] Myr
Other designations
18 G. Volantis, CD–69 475, HD 63584, HIP 37720, HR 3038, SAO 249943[11]
Database references
SIMBADdata

HD 63584 has a classification of "A0 IV/V",[3] which states it is an A0 star with the characteristics of a main sequence and subgiant star. It has 2.58 times the Sun's mass,[7] but a radius around 3 times that of the Sun.[8] HD 63584 radiates at 60 times the Sun's luminosity[7] from its photosphere at an effective temperature of 9,954 K,[7] which gives it the blueish-white hue of an A0 star. Despite the "IV" part of the classification, HD 63584 is only 256 million years old,[7] having completed only 59.6% of its main sequence lifetime.[7]

References
  1. 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. (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. Houk, N.; Cowley, A. P. (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. 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. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737. S2CID 119231169.
  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. Zorec, J.; Royer, F. (January 2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. ISSN 0004-6361. S2CID 55586789.
  8. Stassun, Keivan G. (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.
  9. Anders, F.; et al. (August 2019). "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. S2CID 131780028.
  10. Royer, F.; Zorec, J.; Gómez, A. E. (1 February 2007). "Rotational velocities of A-type stars. III. Velocity distributions". Astronomy and Astrophysics. 463 (2): 671–682. arXiv:astro-ph/0610785. Bibcode:2007A&A...463..671R. doi:10.1051/0004-6361:20065224. ISSN 0004-6361. S2CID 18475298.
  11. "HR 3038". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 November 2021.
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