HD 64484

From Wikipedia, the free encyclopedia
HD 64484
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 07h 49m 40.99s[1]
Declination −66° 11′ 45.50″[1]
Apparent magnitude (V) 5.762±0.009[2]
Characteristics
Spectral type B9V[3]
U−B color index -0.16[4]
B−V color index -0.04[4]
Astrometry
Radial velocity (Rv)11±4.3[5] km/s
Proper motion (μ) RA: −2.132±0.151[1] mas/yr
Dec.: −0.756±0.145[1] mas/yr
Parallax (π)7.1754 ± 0.0756[1] mas
Distance455 ± 5 ly
(139 ± 1 pc)
Absolute magnitude (MV)-0.11[6]
Details
Mass3.07±0.04[7] M☉
Radius3.28[8] R☉
Luminosity140+9
−8[7] L☉
Temperature10,544±49[7] K
Metallicity [Fe/H]+0.01[8] dex
Rotational velocity (v sin i)154[7] km/s
Age339[8] Myr
Other designations
CPD−65 827, GC 10628, HD 64484, HIP 38210, HR 3081, SAO 249978, GSC 08923-02112
Database references
SIMBADdata

HD 64484 (HR 3081) is a solitary star in the southern circumpolar constellation Volans. With an apparent magnitude of 5.76, it's faintly visible to the naked eye under ideal conditions. The star is located 454 light-years (139 parsecs) based on parallax, but is drifting away with a heliocentric radial velocity of 11 km/s.

Properties[]

HD 64484 has 3.07 times the Sun's mass, and 3.28 times the Sun's radius. It radiates at 140 times the Sun's luminosity from it's photosphere at an effective temperature of 10,544 K. The star is a rapid rotator, with a projected rotational velocity of 154 km/s, and has a similar metallicity to the Sun. HD 64484 is 339 million years old, and has completed 80.6% of it's lifetime.

References[]

  1. ^ a b c d 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. (1 March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. 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_f0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_f0., by Houk, N.; Cowley, A. P.. Ann Arbor, MI (USA): Department of Astronomy, University of Michigan, 19 + 452 p.
  4. ^ a b Hamdy, M. A.; Abo Elazm, M. S.; Saad, S. M. (1 May 1993). "A catalogue of spectral classification and photometric data of B-type stars". Astrophysics and Space Science. 203: 53–107. doi:10.1007/BF00659414. ISSN 0004-640X.
  5. ^ Gontcharov, G. A. (1 November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32: 759–771. arXiv:1606.08053. doi:10.1134/S1063773706110065. ISSN 1063-7737.
  6. ^ Anderson, E.; Francis, Ch. (1 May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38: 331–346. arXiv:1108.4971. doi:10.1134/S1063773712050015. ISSN 1063-7737.
  7. ^ a b c d Zorec, J.; Royer, F. (1 January 2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. doi:10.1051/0004-6361/201117691. ISSN 0004-6361.
  8. ^ a b c Bochanski, John J.; Faherty, Jacqueline K.; Gagné, Jonathan; Nelson, Olivia; Coker, Kristina; Smithka, Iliya; Desir, Deion; Vasquez, Chelsea (1 April 2018). "Fundamental Properties of Co-moving Stars Observed by Gaia". The Astronomical Journal. 155: 149. arXiv:1801.00537. doi:10.3847/1538-3881/aaaebe. ISSN 0004-6256.
Retrieved from ""