46 Aquilae

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46 Aquilae
Aquila constellation map.png
46 Aquilae near the star Tarazed (γ Aql)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 42m 12.81267s[1]
Declination 12° 11′ 35.7383″[1]
Apparent magnitude (V) 6.321[2]
Characteristics
Spectral type B9III[3]
U−B color index −0.42[4]
B−V color index −0.08[4]
Astrometry
Radial velocity (Rv) −24.70 ± 1.6[3] km/s
Proper motion (μ) RA: −0.32[1] mas/yr
Dec.: −8.70[1] mas/yr
Parallax (π) 4.53 ± 0.79[1] mas
Distance approx. 700 ly
(approx. 220 pc)
Details[5]
Surface gravity (log g) 3.7 cgs
Temperature 12900 K
Rotational velocity (v sin i) 1.0 ± 0.5 km/s
Other designations
BD+11° 3954, HD 186122, HIP 96931, HR 7493, SAO 105156
Database references
SIMBAD data

46 Aquilae (abbreviated 46 Aql) is a seventh-magnitude star in the constellation of Aquila. 46 Aquilae is its Flamsteed designation. It is located approximately 700 light years from Earth, based on parallax.[1]

References[edit]

  1. ^ a b c d e f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. 
  3. ^ a b "* 46 Aql". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-07-24. 
  4. ^ a b Crawford, D. L. (February 1963), "U, b, v, and Hβ Photometry for the Bright B8- and B9-TYPE Stars", Astrophysical Journal, 137: 530, Bibcode:1963ApJ...137..530C, doi:10.1086/147526. 
  5. ^ Bailey, J. D.; Landstreet, J. D. (2013). "Abundances determined using Si ii and Si iii in B-type stars: Evidence for stratification". Astronomy & Astrophysics. 551: A30. doi:10.1051/0004-6361/201220671.