HD 32450

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]
Distance28.0 ± 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
Mass0.59 M☉
HD 32450 B
Mass0.37 M☉
Other designations
BD−21° 1051, GJ 185, HIP 23452, SAO 170003, LTT 2151
Database references
SIMBADdata
ARICNSA
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]

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ 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 "Compilation of Eggen's UBV data, transformed to UBV (unpublished)".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.
  6. ^ 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.
  7. ^ 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.
  8. ^ 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.
  9. ^ "LTT 2151 – High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2008-08-12.