Mintaka

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Mintaka A/B/C/D
Diagram showing star positions and boundaries of the Orion constellation and its surroundings
Cercle rouge 100%.svg
Location of δ Orionis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Orion
Richt ascension 05h 32m 00.400s[1]
Declination −00° 17′ 56.74″[1]
Apparent magnitude (V) 2.23 (3.2/3.3) / 6.85 / 14.0
Chairactereestics
Spectral type O9.5 II + B0.5III
U−B colour index −1.05
B−V colour index −0.22
Variable teep Eclipsin binary
Astrometry
Radial velocity (Rv)16 km/s
Proper motion (μ) RA: 0.64 ± 0.56[1] mas/yr
Dec.: -0.69 ± 0.27[1] mas/yr
Parallax (π)4.71 ± 0.58[1] mas
Distanceapprox. 690 ly
(approx. 210 pc)
Absolute magnitude (MV)−4.99
Details
Mintaka A
Mass20[2] M
Radius15.8[3] R
Luminosity90,000[2] L
Surface gravity (log g)3.5[3] cgs
Temperatur31,802 ± 418[3] K
Age3–6 Myr
Mintaka B
Mass20[2] M
Luminosity90,000[2] L
Temperatur33,000[2] K
Ither designations
Mintaka, δ Orionis, 34 Orionis, 88 G. Orionis, HR 1852/1851, BD −00°983, HD 36486/36485, SAO 132220/132221, FK5 206, HIP 25930
Database references
SIMBADdata

Mintaka (δ Orionis, 34 Orionis) is a starn some 690 licht years distant[1] in the constellation Orion. The name Mintaka comes frae منطقة manṭaqa, which means "the belt" in Arabic.[4] Thegither wi Alnitak (Zeta Orionis) an Alnilam (Epsilon Orionis), the three starns mak up the belt o Orion, kent bi mony names amang auncient culturs. When Orion is close tae the meridian, Mintaka is the richt-maist o the belt's starns as seen bi an observer in the Northren Hemisphere facin sooth.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. 2.0 2.1 2.2 2.3 2.4 Kaler, James B., "MINTAKA (Delta Orionis)", Stars, University of Illinois, retrieved 2010-02-07 
  3. 3.0 3.1 3.2 Underhill, A. B.; et al. (1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", Monthly Notices of the Royal Astronomical Society, 189: 601–605, Bibcode:1979MNRAS.189..601U  Unkent parameter |month= ignored (help)
  4. Allen, Richard Hinckley (1963) [1899]. Star-names and their meanings. New York, NY: Dover Publications. p. 314. ISBN 1-931559-44-9.