HD 164712
HD 164712 is a giant star in the southern constellation of Apus. It is 229 light-years (70 pc) away and shows indications of an infrared excess, suggesting there may be a dusty disk in orbit around the star.[9]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Apus |
| Right ascension | 18h 11m 15.807s[1] |
| Declination | −75° 53′ 29.48″[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: +16.16±0.034[1] mas/yr Dec.: −296.819±0.048[1] mas/yr |
| Parallax (π) | 14.2681 ± 0.0440 mas[1] |
| Distance | 228.6 ± 0.7 ly (70.1 ± 0.2 pc) |
| Absolute magnitude (MV) | 1.41[5] |
| Details | |
| Mass | 1.09[6] M☉ |
| Radius | 10.3[7] R☉ |
| Luminosity | 33[6] L☉ |
| Surface gravity (log g) | 2.385[7] cgs |
| Temperature | 4,360[6] K |
| Metallicity [Fe/H] | 0.10[6] dex |
| Rotational velocity (v sin i) | <1.5[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data.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, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H
- Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E
- Allende Prieto, C.; Lambert, D. L. (1999), "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures", Astronomy and Astrophysics, 352: 555–562, arXiv:astro-ph/9911002, Bibcode:1999A&A...352..555A.
- Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020), "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era", Astronomy & Astrophysics, 633: A34, arXiv:1910.12732, Bibcode:2020A&A...633A..34C, doi:10.1051/0004-6361/201936360, ISSN 0004-6361.
- McDonald, I.; Zijlstra, A. A.; Watson, R. A. (11 October 2017), "Fundamental parameters and infrared excesses of Tycho–Gaia stars", Monthly Notices of the Royal Astronomical Society, 471 (1): 770–791, arXiv:1706.02208, Bibcode:2017MNRAS.471..770M, doi:10.1093/mnras/stx1433, ISSN 0035-8711.
- De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014), "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆", Astronomy & Astrophysics, 561: A126, arXiv:1312.3474, Bibcode:2014A&A...561A.126D, doi:10.1051/0004-6361/201220762, ISSN 1432-0746.
- 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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