HD 155035
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 11m 38.68225s[1] |
| Declination | –48° 52′ 24.2305″[1] |
| Apparent magnitude (V) | 5.92[2] |
| Characteristics | |
| Spectral type | M1.5 III[3] |
| U−B color index | +1.85[4] |
| B−V color index | +1.82[2] |
| Variable type | Irregular variable |
| Astrometry | |
| Proper motion (μ) | RA: 8.42[1] mas/yr Dec.: –3.71[1] mas/yr |
| Parallax (π) | 2.93 ± 0.43[1] mas |
| Distance | approx. 1,100 ly (approx. 340 pc) |
| Other designations | |
HD 155035 is the Henry Draper Catalogue designation for a star in the constellation Ara, the Altar. It is located at a distance of approximately 1,100 light-years (340 parsecs)[1] from Earth and has an apparent visual magnitude of 5.92,[2] making it is faintly visible to the naked eye. This is a red giant star with a stellar classification of M1.5 III.[3] It an irregular variable that changes brightness over an amplitude range of 0.12 magnitudes.[5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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.
- ↑ 2.0 2.1 2.2 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.
- ↑ 3.0 3.1 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.
- ↑ 4.0 4.1 "V854 Ara -- Pulsating variable Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-03.
- ↑ Adelman, S. J. (October 2000), "On the Variability of K5-M Stars", Information Bulletin on Variable Stars 4959 (1), Bibcode:2000IBVS.4959....1A.
External links
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