Back KY الدجاجة Arabic KY Cygni AST KY Cygni Czech KY Cygni German KY Κύκνου Greek KY Cygni English KY Cigno Esperanto KY Cygni Spanish کیوای ماکیان Persian KY Cygni French
| KY Cygni | ||||
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| KY Cygni se grootte in vergelyking met dié van Betelgeuse. | ||||
| Sterrebeeld | Swaan | |||
| Spektraaltipe | M3-4I[1] (M3,5Ia[2]) | |||
| Waarnemingsdata (Epog J2000) | ||||
| Regte klimming | 20h 25m 58.05s[3] | |||
| Deklinasie | +38° 21′ 07.6″[3] | |||
| Skynmagnitude (m) | 11,14[4] (10,60 – 11,74)[5] | |||
| Absolute magnitude (M) | -8,18[1] | |||
| B-V-kleurindeks | 3,39[4] | |||
| U-B-kleurindeks | 2,91[4] | |||
| Besonderhede | ||||
| Radius (R☉) | 1 420 (2 850?)[1] | |||
| Ligsterkte (L☉) | 138 000[4] - 270 000[1] | |||
| Temperatuur (K) | 3 500[1] | |||
| Afstand (ligjaar) | ~5 000 | |||
| Eienskappe | ||||
| Veranderlikheid | Stadig, onreëlmatig[2] | |||
| Ander name | ||||
| KY Cyg, GSC 03152-01140, IRAS 20241+3811, IRC+40415, TYC 3152-1140-1, RAFGL 2575, UCAC2 45230193, 2MASS J20255805+3821076 | ||||
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KY Cygni is ’n rooisuperreus van spektraaltipe M3.5Ia in die sterrebeeld Swaan. Dit is een van die grootste sterre bekend, met ’n geraamde radius van 1 420 R☉ (sonradiusse). Dit is ook een van die helderstes: sowat 300 000 of meer keer so helder as die Son. Dit is sowat 5 000 ligjare van die Aarde af.
- ↑ 1,0 1,1 1,2 1,3 1,4 Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal. 628 (2): 973. arXiv:astro-ph/0504337. Bibcode:2005ApJ...628..973L. doi:10.1086/430901.
- ↑ 2,0 2,1 KY Cyg, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars Geargiveer 20 Junie 2017 op Wayback Machine, Sternberg Astronomical Institute, Moscow, Russia. URL besoek op 12 November 2010
- ↑ 3,0 3,1 Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". VizieR On-line Data Catalog: II/246. Originally published in: University of Massachusetts and Infrared Processing and Analysis Center. 2246: 0. Bibcode:2003yCat.2246....0C.
- ↑ 4,0 4,1 4,2 4,3 Mauron, N.; Josselin, E. (2011). "The mass-loss rates of red supergiants and the de Jager prescription". Astronomy and Astrophysics. 526: A156. arXiv:1010.5369. Bibcode:2011A&A...526A.156M. doi:10.1051/0004-6361/201013993.
- ↑ Alfonso-Garzón, J.; Domingo, A.; Mas-Hesse, J. M.; Giménez, A. (2012). "The first INTEGRAL-OMC catalogue of optically variable sources". Astronomy & Astrophysics. 1210: arXiv:1210.0821. arXiv:1210.0821. Bibcode:2012arXiv1210.0821A. doi:10.1051/0004-6361/201220095.
{{cite journal}}: Onbekende parameter|class=geïgnoreer (hulp)