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 | |
| Database references | |
| SIMBAD | data |
HD 149837 is a binary star in the southern constellation of Ara.
References
- 1 2 3 4 5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
- 1 2 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
- 1 2 3 4 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/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637
- ↑ 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.
- 1 2 Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, 87
- ↑ 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:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
- ↑ 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:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191
External links
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Wednesday, April 20, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.