HD 164712
HD 164712 is a giant star in the southern constellation of Apus. It shows indications of an infrared excess, suggesting there may be a dusty disk in orbit around the star.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Apus |
| Right ascension | 18h 11m 15.80196s[1] |
| Declination | −75° 53′ 29.44″[1] |
| Apparent magnitude (V) | 5.86[2] |
| Characteristics | |
| Spectral type | K2III[3] |
| U−B color index | +1.40[2] |
| B−V color index | +1.27[2] |
| Astrometry | |
| Radial velocity (Rv) | +14.8[4] km/s |
| Proper motion (μ) | RA: +16.77±0.27[1] mas/yr Dec.: −294.99±0.25[1] mas/yr |
| Parallax (π) | 13.28 ± 0.32[1] mas |
| Distance | 246 ± 6 ly (75 ± 2 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- 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
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- Houk, Nancy; Cowley, A. P. (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
- Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick (eds.), The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E
- Plets, H.; et al. (July 1997), "Giants with infrared excess.", Astronomy and Astrophysics, 323: 513–523, Bibcode:1997A&A...323..513P
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