克魯格60

克魯格60A/B
Kruger 60 A/B
观测数据; 曆元 J2000 分點
星座	仙王座
	Kruger 60 A
赤經	22h 27m 59.4677s[1]
赤緯	+57° 41′ 45.150″[1]
視星等 (V)	9.59
	Kruger 60 B
赤經	22h 27m 59.568s[1]
赤緯	+57° 41′ 45.28″[1]
視星等 (V)	11.40
特性
光谱分类	M3V/M4V[2]
U−B 色指数	1.27/1.3
B−V 色指数	1.65/1.8
变星类型	無/耀星
天体测定
徑向速度 (Rv)	–33.1/–31.9 km/s
自行 (μ)	赤经：–870.23 mas/yr ; 赤纬：–471.10 mas/yr
视差 (π)	248.06 ± 1.39 mas
距离	13.15 ± 0.07 ly ; (4.03 ± 0.02 pc)
绝对星等 (MV)	11.76/13.46
詳細資料
質量	0.271/0.176[3] M☉
半徑	0.35/0.24[4] R☉
亮度	0.010/0.0034 L☉
溫度	3180/2890 K K
金屬量	–0.04[5]
	軌道[6]
主星	Kruger 60 A
伴星	Kruger 60 B
绕行周期 (P)	44.67 yr
半长轴 (a)	2.383"
偏心率 (e)	0.410
倾斜角 (i)	167.2°
升交点黄经 (Ω)	154.5°
近心点历元 (T)	1970.22
近心点幅角 (ω); (primary)	211.0°
其他命名
	DO Cephei, Gl 232-075, GJ 860 A/B, BD +56°2783, HD 239960, LHS 3814/3815, GCTP 5438.00, ADS 15972, Vys 207 A/B, HIP 110893.[7]

克魯格60（Kruger 60）是一個距離地球13.15 光年的聯星系統。系統內的兩顆紅矮星以周期44.6年互繞。

概述

系統中較大的稱為克魯格60A，較小的稱為克魯格60B。較大的克魯格60A質量約太陽的27%，半徑則為太陽的35%；較小的克魯格60B其質量約太陽的18%，半徑約太陽的24%[3][4]。克魯格60B是一顆耀星，其變星編號為仙王座DO（"DO Cephei"）.[8]。克魯格60B光度會不規則變化，會在光度加倍後經過8分鐘又恢復原本光度。

系統中的兩顆恆星平均距離約9.5天文單位，大約是太陽和土星的平均距離。但兩者之間的橢圓形軌道使其距離在5.5到13.5天文單位之間變化。

該系統在距離銀河系核心7–9 kpc的距離環繞銀河系中心，軌道離心率約0.126–0.130[9]。該系統將在88,600年後最接近太陽，大約是1.95秒差距[10]。

參考資料

Perryman, M. A. C.; 等. . Astronomy and Astrophysics. 1997, 323: L49–L52. Bibcode:1997A&A...323L..49P.
Henry, Todd J.; et al. . The Astronomical Journal. October 1994, 108 (4): 1437–1444. Bibcode:1994AJ....108.1437H. doi:10.1086/117167.
Delfosse, X.; et al. . Astronomy and Astrophysics. December 2000, 364: 217–224. Bibcode:2000A&A...364..217D. arXiv:astro-ph/0010586.
Pasinetti Fracassini, L. E.; et al. . Astronomy and Astrophysics. February 2001, 367 (2): 521–524. Bibcode:2001A&A...367..521P. arXiv:astro-ph/0012289. doi:10.1051/0004-6361:20000451. The data is from the Vizier II/224 页面存档备份，存于 catalogue.
Bonfils, X.; et al. . Astronomy and Astrophysics. November 2005, 442 (2): 635–642. Bibcode:2005A&A...442..635B. arXiv:astro-ph/0503260. doi:10.1051/0004-6361:20053046. Only listed for component A.
Heintz, W. D. . Astronomy and Astrophysics Supplement Series. August 1986, 65 (2): 411–417. Bibcode:1986A&AS...65..411H.
. SIMBAD. Centre de Données astronomiques de Strasbourg. [2009-09-28]. （原始内容存档于2020-07-07）.
White, Stephen M.; et al. . Astrophysical Journal Supplement Series. December 1989, 71: 895–904. Bibcode:1989ApJS...71..895W. doi:10.1086/191401.
Allen, C.; Herrera, M. A. . Revista Mexicana de Astronomia y Astrofisica. 1998, 34: 37–46. Bibcode:1998larm.confE.115A.
García-Sánchez, J.; et al. . Astronomy and Astrophysics. November 2001, 379 (2): 634–659. Bibcode:2001A&A...379..634G. doi:10.1051/0004-6361:20011330.

延伸閱讀

James Kaler, Extreme Stars, (Cambridge: Cambridge UP, 2001), p. 32.
Hires LRGB CCD Image 页面存档备份，存于

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[aaa323-1] Perryman, M. A. C.; 等. . Astronomy and Astrophysics. 1997, 323: L49–L52. Bibcode:1997A&A...323L..49P.

[apj108-2] Henry, Todd J.; et al. . The Astronomical Journal. October 1994, 108 (4): 1437–1444. Bibcode:1994AJ....108.1437H. doi:10.1086/117167.

[aaa364-3] Delfosse, X.; et al. . Astronomy and Astrophysics. December 2000, 364: 217–224. Bibcode:2000A&A...364..217D. arXiv:astro-ph/0010586.

[aaa367-4] Pasinetti Fracassini, L. E.; et al. . Astronomy and Astrophysics. February 2001, 367 (2): 521–524. Bibcode:2001A&A...367..521P. arXiv:astro-ph/0012289. doi:10.1051/0004-6361:20000451. The data is from the Vizier II/224 页面存档备份，存于 catalogue.

[5] Bonfils, X.; et al. . Astronomy and Astrophysics. November 2005, 442 (2): 635–642. Bibcode:2005A&A...442..635B. arXiv:astro-ph/0503260. doi:10.1051/0004-6361:20053046. Only listed for component A.

[aas65-6] Heintz, W. D. . Astronomy and Astrophysics Supplement Series. August 1986, 65 (2): 411–417. Bibcode:1986A&AS...65..411H.

[SIMBAD-7] . SIMBAD. Centre de Données astronomiques de Strasbourg. [2009-09-28]. （原始内容存档于2020-07-07）.

[8] White, Stephen M.; et al. . Astrophysical Journal Supplement Series. December 1989, 71: 895–904. Bibcode:1989ApJS...71..895W. doi:10.1086/191401.

[9] Allen, C.; Herrera, M. A. . Revista Mexicana de Astronomia y Astrofisica. 1998, 34: 37–46. Bibcode:1998larm.confE.115A.

[10] García-Sánchez, J.; et al. . Astronomy and Astrophysics. November 2001, 379 (2): 634–659. Bibcode:2001A&A...379..634G. doi:10.1051/0004-6361:20011330.