HR 244

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HR 244
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 00h 53m 04.19602s[1]
Declination +61° 07′ 26.2945″[1]
Characteristics
Spectral type F9V[2]
Astrometry
Proper motion (μ) RA: –68.95[1] mas/yr
Dec.: +170.15[1] mas/yr
Parallax (π) 53.35 ± 0.33[1] mas
Distance 61.1 ± 0.4 ly
(18.7 ± 0.1 pc)
Details
Mass 1.194[3] M
Radius 1.7426 ± 0.0233[3] R
Luminosity 3.4521 ± 0.0432[3] L
Temperature 5,965 ± 35[3] K
Metallicity [Fe/H] 0.04[3] dex
Age 5.3[3] Gyr
Other designations
BD+60 124, GJ 41, HD 5015, HIP 4151 , SAO 11444.[2]

HR 244 is a star in the constellation Cassiopeia. Its apparent magnitude is 4.82. Located around 18.74 parsecs (61.1 ly) distant, it is a white main-sequence star of spectral type F9V,[2] a star that is currently fusing its core hydrogen.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c "HR 244". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 7 February 2014. 
  3. ^ a b c d e f Boyajian, Tabetha S. et al. (July 2013), "Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations", The Astrophysical Journal 771 (1): 40, arXiv:1306.2974, Bibcode:2013ApJ...771...40B, doi:10.1088/0004-637X/771/1/40.