HD 165259

HD 165259 is visual binary star[4] system in the southern constellation of Apus.

HD 165259
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
A
Right ascension 18h 12m 34.084s[1]
Declination −73° 40′ 20.77″[1]
Apparent magnitude (V) 5.91[2]
B
Right ascension 18h 12m 33.474s[3]
Declination −73° 40′ 20.94″[3]
Apparent magnitude (V) 9.03[2]
Characteristics
Spectral type F5V[4]
U−B color index +0.05[5]
B−V color index +0.46[5]
Astrometry
A
Radial velocity (Rv)+13.97[6] km/s
Proper motion (μ) RA: −91.400[1] mas/yr
Dec.: −254.341[1] mas/yr
Parallax (π)23.6778 ± 0.0399 mas[1]
Distance137.7 ± 0.2 ly
(42.23 ± 0.07 pc)
B
Proper motion (μ) RA: −62.130[3] mas/yr
Dec.: −241.999[3] mas/yr
Parallax (π)23.7101 ± 0.0338 mas[3]
Distance137.6 ± 0.2 ly
(42.18 ± 0.06 pc)
Details
A
Mass1.22[7] M☉
Radius2.15+0.05
−0.09[6] R☉
Luminosity6.28±0.03[6] L☉
Surface gravity (log g)3.84[7] cgs
Temperature6,314[7] K
Metallicity [Fe/H]−0.34[7] dex
B
Mass0.76[7] M☉
Surface gravity (log g)4.61[7] cgs
Temperature5,159[7] K
Other designations
CD-73°1348, HD 165259, HIP 89234, HR 6751, SAO 257571.
Database references
SIMBADdata

References
  1. 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.
  2. Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (March 2002). "The Tycho double star catalogue". Astronomy & Astrophysics. 384 (1): 180–189. Bibcode:2002A&A...384..180F. doi:10.1051/0004-6361:20011822. ISSN 0004-6361.
  3. 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.
  4. Houk, Nancy (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.
  5. Nicolet, B. (1978). "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N.
  6. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  7. Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; de Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
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