HD 149837

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HD 149837
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 16h 40m 50.48446s[1]
Declination −60° 26′ 47.2030″[1]
Apparent magnitude (V) 6.18[2]
Characteristics
Spectral type F6V[3]
Apparent magnitude (B) 6.660
Apparent magnitude (V) 6.223
Apparent magnitude (J) 5.217
Apparent magnitude (H) 4.969
Apparent magnitude (K) 4.886
B−V color index +0.17[2]
Astrometry
Radial velocity (Rv) 3.9±0.2[4] km/s
Proper motion (μ) RA: +59.02[1] mas/yr
Dec.: –74.20[1] mas/yr
Parallax (π) 31.92 ± 0.53[1] mas
Distance 102 ± 2 ly
(31.3 ± 0.5 pc)
Details
HD 149837 A
Mass 1.25[5] M
Luminosity 2.8[6] L
Surface gravity (log g) 4.16[3] cgs
Temperature 6,354[3] K
Metallicity [Fe/H] −0.08[3] dex
Age 2.7[7] Gyr
HD 149837 B
Mass 0.79[5] M
Other designations
CD–60° 6381, HD 149837, HIP 81657, HR 6177, SAO 253651.
Database references
SIMBAD data

HD 149837 is a binary star in the southern constellation of Ara.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (November 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. ^ a b 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 
  3. ^ a b c d Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770Freely accessible, Bibcode:2006AJ....132..161G, doi:10.1086/504637 
  4. ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ a b Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827Freely accessible, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, 87 
  6. ^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037Freely accessible, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x 
  7. ^ Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982Freely accessible, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191 

External links[edit]