Mintaka

Mintaka
Die Jagter se Belt, met Mintaka regs.
Sterrebeeld	Jagter
Spektraaltipe	O9,5II + B1V + B0IV;[1] B3V[2]
Soort	Veelvoudige ster
Waarnemingsdata (Epog J2000)
Regte klimming	05h 32m 00.4s[3]
Deklinasie	-00° 17′ 56.8″[3]
Absolute magnitude (M)	-5,8[4]
B-V-kleurindeks	-0,22[5]
U-B-kleurindeks	-1,05[5]
Skynmagnitude (m)	14[4]
Skynmagnitude (m)	6,85[4]
Besonderhede
Komponent 1	δ Ori A (Aa1 + Aa2 + Ab)
Massa (M☉)	24 + 8,4 + 22,5[1]
Radius (R☉)	16,5 + 6,5 + 10,4[1]
Ligsterkte (L☉)	190 000 + 16 000 + 63 000[1]
Temperatuur (K)	29 500 ± 500 + 25 600 ± 3 000 + 28 400 ± 1 500[1]
Rotasiespoed (km/s)	130 ± 10 + 150 ± 50 + 220 ± 20[1]
Komponent 2	δ Ori B
Komponent 3	HD 36485
Massa (M☉)	~9[2]
Radius (R☉)	5,7[6]
Ligsterkte (L☉)	3 300[6]
Temperatuur (K)	18 400[6]
Eienskappe
Afstand (ligjaar)	1 200[1]
Veelvoudigheid	5 sterre
Ander name
δ Orionis, 34 Orionis, 88 G. Orionis, FK5 206, HIP 25930, ADS 4134, CCDM J05320-0018, WDS J05320-0018
Portaal    Sterrekunde

Mintaka, ook bekend as Delta Orionis en 34 Orionis, is ’n veelvoudige ster sowat 1 200 ligjare van die Aarde af in die sterrebeeld Jagter (Orion). Saam met Alnitak en Alnilam vorm dit die Jagter se Belt. Wanneer die Jagter naby die meridiaan is, ’n lyn wat van hemelpool tot hemelpool strek, is Mintaka die heel regterkantse ster van die Belt vir ’n waarnemer in die Noordelike Halfrond wat suid kyk.

1. ↑ ^{1,0 1,1 1,2 1,3 1,4 1,5 1,6} Shenar, T.; Oskinova, L.; Hamann, W.-R.; Corcoran, M. F.; Moffat, A. F. J.; Pablo, H.; Richardson, N. D.; Waldron, W. L.; Huenemoerder, D. P.; Maíz Apellániz, J.; Nichols, J. S.; Todt, H.; Nazé, Y.; Hoffman, J. L.; Pollock, A. M. T.; Negueruela, I. (2015). "A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. IV. A Multiwavelength, Non-LTE Spectroscopic Analysis". Astrophysical Journal. 809 (2): 135. arXiv:1503.03476. Bibcode:2015ApJ...809..135S. doi:10.1088/0004-637X/809/2/135.
2. ↑ ^{2,0 2,1} Leone, F.; Bohlender, D. A.; Bolton, C. T.; Buemi, C.; Catanzaro, G.; Hill, G. M.; Stift, M. J. (2010). "The magnetic field and circumstellar environment of the helium-strong star HD36485 = δ Ori C". Monthly Notices of the Royal Astronomical Society. 401 (4): 2739. Bibcode:2010MNRAS.401.2739L. doi:10.1111/j.1365-2966.2009.15858.x.
3. ↑ ^{3,0 3,1} van Leeuwen, F. (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.
4. ↑ ^{4,0 4,1 4,2} Harvin, James A.; Gies, Douglas R.; Bagnuolo, William G.; Penny, Laura R.; Thaller, Michelle L. (2002). "Tomographic Separation of Composite Spectra. VIII. The Physical Properties of the Massive Compact Binary in the Triple Star System HD 36486 (δ Orionis A)". Astrophysical Journal. 565 (2): 1216. arXiv:astro-ph/0110683. Bibcode:2002ApJ...565.1216H. doi:10.1086/324705.
5. ↑ ^{5,0 5,1} Hoffleit, Dorrit; Jaschek, Carlos (1991). The Bright star catalogue (5th Revised uitg.). New Haven, Conn.: Yale University Observatory. Bibcode:1991bsc..book.....H.
6. ↑ ^{6,0 6,1 6,2} Zboril, M.; North, P.; Glagolevskij, Yu. V.; Betrix, F. (1997). "Properties of He-rich stars. I. Their evolutionary state and helium abundance". Astronomy and Astrophysics. 324: 949. Bibcode:1997A&A...324..949Z.