HD 32450
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 mas[1] |
| 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
[edit]References
[edit]- ^ a b c d e van Leeuwen, F.; et al. (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. S2CID 18759600.
- ^ 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. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x.
- ^ a b "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 2017-04-30. Retrieved 2017-05-06.
- ^ 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. arXiv:astro-ph/0112496. Bibcode:2002AJ....123.2002H. doi:10.1086/339315. ISSN 0004-6256. S2CID 17735847.
- ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
- ^ 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. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID 51814894.
- ^ Ward-Duong, K.; Patience, J.; De Rosa, R. J.; Bulger, J.; Rajan, A.; Goodwin, S. P.; Parker, R. J.; McCarthy, D. W.; Kulesa, C. (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. arXiv:1503.00724. Bibcode:2015MNRAS.449.2618W. doi:10.1093/mnras/stv384.
- ^ 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. Bibcode:2001A&A...379..634G. doi:10.1051/0004-6361:20011330. See Table 4, p. 644.
- ^ "LTT 2151 – High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2008-08-12.
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