Astronomy:HD 153221
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Short description: Double star in the constellation Ara
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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 |
| Distance | 350 ± 30 ly (107 ± 9 pc) |
| Details | |
| Luminosity | 49.5[6] L☉ |
| Temperature | 4,993[6] K |
| Rotational velocity (v sin i) | 4.4[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 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.
- ↑ 3.0 3.1 Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22
- ↑ 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.
- ↑ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, 30, University of Toronto: International Astronomical Union, p. 57, Bibcode: 1967IAUS...30...57E.
- ↑ 6.0 6.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M
- ↑ Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo", Astronomy and Astrophysics 493 (3): 1099–1107, doi:10.1051/0004-6361:200810377, Bibcode: 2009A&A...493.1099S, http://goedoc.uni-goettingen.de/goescholar/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2[yes|permanent dead link|dead link}}]
External links
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