HD 153221

HD 153221 is a double star in the southern constellation of Ara. As of 2012, the pair have an angular separation of 1.10″ along a position angle of 172°.[3]

HD 153221
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension  17h 00m 26.95941s[1]
Declination −48° 38′ 51.9319″[1]
Apparent magnitude (V) 6.00[2] (6.34 + 7.69)[3]
Characteristics
Spectral type G8/K0 III + G[4]
B−V color index +0.88[2]
Astrometry
Radial velocity (Rv)−28.6[5] km/s
Proper motion (μ) RA: −17.93[1] mas/yr
Dec.: −80.49[1] mas/yr
Parallax (π)9.36 ± 0.75[1] mas
Distance350 ± 30 ly
(107 ± 9 pc)
Details
Luminosity49.5[6] L☉
Temperature4,993[6] K
Rotational velocity (v sin i)4.4[7] km/s
Other designations
CD-48° 11360, HD 153221, HIP 83216, HR 6300, SAO 227542.
Database references
SIMBADdata

References
  1. 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. Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
  3. Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
  4. Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  5. Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
  6. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
  7. Schröder, C.; Reiners, A.; Schmitt, J. H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377.


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