HD 160342
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 42m 03.61953s[1] |
| Declination | –50° 30′ 38.5221″[1] |
| Apparent magnitude (V) | 6.35[2] |
| Characteristics | |
| Spectral type | M3 III[3] |
| U−B color index | +1.96[4] |
| B−V color index | +1.73[4] |
| R−I color index | 0.85 |
| Astrometry | |
| Radial velocity (Rv) | –27.1 ± 0.4[5] km/s |
| Proper motion (μ) | RA: +2.05[1] mas/yr Dec.: -13.96[1] mas/yr |
| Parallax (π) | 2.71 ± 0.67[1] mas |
| Distance | approx. 1,200 ly (approx. 370 pc) |
| Other designations | |
HD 160342 is the Henry Draper Catalogue designation for a star in the southern constellation of Ara. It has an apparent visual magnitude of 6.35[2] and, based upon parallax measurements, is approximately 1,200 light-years (370 parsecs) distant from Earth. This is an evolved red giant that is on the asymptotic giant branch,[2] with a stellar classification of M3 III.[3] It is a periodic variable star that changes in brightness by 0.1127 magnitudes at the rate of 0.37943 cycles per day,[6] or once every 2.6 days.
References
- 1 2 3 4 5 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.
- 1 2 3 Eggen, Olin J. (July 1992), "Asymptotic giant branch stars near the sun", Astronomical Journal 104 (1): 275–313, Bibcode:1992AJ....104..275E, doi:10.1086/116239.
- 1 2 Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
- 1 2 3 "V626 Ara -- Pulsating variable Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-04.
- ↑ 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, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
- ↑ Koen, Chris; Eyer, Laurent (March 2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society 331 (1): 45–59, arXiv:astro-ph/0112194, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x.
External links
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