HD 174569

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HD 174569
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 18h 50m 45.5515s[1]
Declination +10° 58′ 34.9970″[1]
Apparent magnitude (V) 6.36[2]
Characteristics
Spectral type K5III[3]
U−B color index +1.63[2]
B−V color index +1.44[2]
Astrometry
Radial velocity (Rv) -23.7 km/s
Proper motion (μ) RA: +7.92[1] mas/yr
Dec.: +4.66[1] mas/yr
Parallax (π) 2.59 ± 0.84[1] mas
Distance approx. 1,300 ly
(approx. 400 pc)
Other designations
BD+10° 3685, HD 174569, HIP 92475, HR 7099, SAO 104170.
Database references
SIMBAD data

HD 174569 is a spectroscopic binary[3] star system in the equatorial constellation of Aquila.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752free to read. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Oja, T. (August 1991), "UBV photometry of stars whose positions are accurately known. VI", Astronomy and Astrophysics Supplement Series, 89 (2): 415–419, Bibcode:1991A&AS...89..415O 
  3. ^ a b Bidelman, William P. (April 1958), "Spectral Classification of Visual Binaries Having Primaries Above the Main Sequence", Publications of the Astronomical Society of the Pacific, 70 (413): 168, Bibcode:1958PASP...70..168B, doi:10.1086/127203 

External links[edit]