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]

HD 164712

Observation data Epoch J2000      Equinox J2000
Constellation	Apus
Right ascension	18^h 11^m 15.80196^s[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
CD−75° 1016, HD 164712, HIP 89115, HR 6731, SAO 257569.
Database references
SIMBAD	data

References

1. 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
2. Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
3. 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
4. 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
5. Plets, H.; et al. (July 1997), "Giants with infrared excess.", Astronomy and Astrophysics, 323: 513–523, Bibcode:1997A&A...323..513P

External links

• Image HD 164712