HD 157753 is giant star in the southern constellation of Ara. It may be an astrometric binary,[6] and it has a faint, magnitude 13 companion at an angular separation of 31.5″ along a position angle of 356° (as of 2000).[7]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 27m 57.60196s[1] |
| Declination | −52° 17′ 49.8161″[1] |
| Apparent magnitude (V) | 5.75[2] |
| Characteristics | |
| Spectral type | K2III[3] |
| B−V color index | +1.17[2] |
| Astrometry | |
| Radial velocity (Rv) | −8.70[4] km/s |
| Proper motion (μ) | RA: −14.50[1] mas/yr Dec.: −58.43[1] mas/yr |
| Parallax (π) | 9.12 ± 0.53 mas[1] |
| Distance | 360 ± 20 ly (110 ± 6 pc) |
| Details | |
| Luminosity | 81[5] L☉ |
| Temperature | 4,564[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
edit- ^ a b c d e van Leeuwen, F. (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. S2CID 18759600.
- ^ a b Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C
- ^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H
- ^ 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. S2CID 119231169.
- ^ a b 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, S2CID 118665352
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
External links
edit | This binary or multiple star system–related article is a stub. You can help Wikipedia by expanding it. |