Astronomy:HD 32450
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Short description: Binary star in the constellation Lepus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h 02m 28.42030s[1] |
| Declination | −21° 15′ 23.9203″[1] |
| Apparent magnitude (V) | 8.317[2] (8.66 / 10.60)[3] |
| Characteristics | |
| Spectral type | K7V[4] |
| U−B color index | +1.15[5] |
| B−V color index | +1.42[5] |
| Astrometry | |
| Radial velocity (Rv) | −11.00 ± 0.38[6] km/s |
| Proper motion (μ) | RA: −143.42[1] mas/yr Dec.: −221.81[1] mas/yr |
| Parallax (π) | 116.59 ± 1.51[1] mas |
| Distance | 28.0 ± 0.4 ly (8.6 ± 0.1 pc) |
| Orbit[3] | |
| Period (P) | 43.55 ± 0.27 yr |
| Semi-major axis (a) | 1.062 ± 0.049″ |
| Eccentricity (e) | 0.720 ± 0.028 |
| Inclination (i) | 60.7 ± 2.1° |
| Longitude of the node (Ω) | 246.5 ± 3.9° |
| Periastron epoch (T) | B 1997.46 ± 0.86 |
| Argument of periastron (ω) (secondary) | 280.6 ± 1.2° |
| Details[7] | |
| HD 32450 A | |
| Mass | 0.59 M☉ |
| HD 32450 B | |
| Mass | 0.37 M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | A |
| B | |
HD 32450, also known as Gliese 185 is a binary star in the constellation Lepus. It is located about 28 light years from the Solar System. This star will make its closest approach to the Sun in roughly 350,000 years, when it comes within 14.8 ly (4.5 pc).[8][9]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL.
- ↑ Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010). "UBV(RI)C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society 403 (4): 1949–1968. doi:10.1111/j.1365-2966.2009.16182.x. Bibcode: 2010MNRAS.403.1949K.
- ↑ 3.0 3.1 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6.
- ↑ Henry, Todd J.; Walkowicz, Lucianne M.; Barto, Todd C.; Golimowski, David A. (2002). "The Solar Neighborhood. VI. New Southern Nearby Stars Identified by Optical Spectroscopy". The Astronomical Journal 123 (4): 2002–2009. doi:10.1086/339315. ISSN 0004-6256. Bibcode: 2002AJ....123.2002H.
- ↑ 5.0 5.1 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode: 1986EgUBV........0M. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1.
- ↑ Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S. (2002). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series 141 (2): 503–522. doi:10.1086/340570. Bibcode: 2002ApJS..141..503N.
- ↑ Ward-Duong, K.; Patience, J.; De Rosa, R. J.; Bulger, J.; Rajan, A.; Goodwin, S. P.; Parker, R. J.; McCarthy, D. W. et al. (2015). "The M-dwarfs in Multiples (MINMS) survey - I. Stellar multiplicity among low-mass stars within 15 pc". Monthly Notices of the Royal Astronomical Society 449 (3): 2618. doi:10.1093/mnras/stv384. Bibcode: 2015MNRAS.449.2618W.
- ↑ García-Sánchez, J.; Weissman, P. R.; Preston, R. A.; Jones, D. L.; Lestrade, J.-F.; Latham, D. W.; Stefanik, R. P.; Paredes, J. M. (2001). "Stellar encounters with the solar system". Astronomy and Astrophysics 379 (2): 634–659. doi:10.1051/0004-6361:20011330. Bibcode: 2001A&A...379..634G. See Table 4, p. 644.
- ↑ "LTT 2151 – High proper-motion Star". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Gliese. Retrieved 2008-08-12.
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