Astronomy:HD 149837

From HandWiki
HD 149837
Observation data
Equinox J2000.0]] (ICRS)
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
Distance102 ± 2 ly
(31.3 ± 0.5 pc)
Details
HD 149837 A
Mass1.25[5] M
Luminosity2.8[6] L
Surface gravity (log g)4.16[3] cgs
Temperature6,354[3] K
Metallicity [Fe/H]−0.08[3] dex
Age2.7[7] Gyr
HD 149837 B
Mass0.79[5] M
Other designations
CD–60° 6381, HD 149837, HIP 81657, HR 6177, SAO 253651.
Database references
SIMBADdata

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

References

  1. 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode2007A&A...474..653V. 
  2. 2.0 2.1 Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series 34: 1–49, Bibcode1978A&AS...34....1N 
  3. 3.0 3.1 3.2 3.3 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, doi:10.1086/504637, Bibcode2006AJ....132..161G 
  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. doi:10.1134/S1063773706110065. Bibcode2006AstL...32..759G. 
  5. 5.0 5.1 Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal 147 (4): 14, doi:10.1088/0004-6256/147/4/87, 87, Bibcode2014AJ....147...87T 
  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, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode2012MNRAS.427..343M 
  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, doi:10.1051/0004-6361/200811191, Bibcode2009A&A...501..941H 

External links