巨蛇座R

巨蛇座R是在赤道星座巨蛇座的一顆蒭藁型變星。它的視星等在5.16和14.4等之間變化，光譜類型在M5e至M8e變動，週期為356.41日^[5][11]。卡爾·路德維希·哈丁在1826年發現這顆恆星是顆變星^[12]。

巨蛇座R

來自AAVSO數據的巨蛇座R的可見光光變曲線[1]。
觀測資料 曆元 J2000
星座	巨蛇座
星官
赤經	15h 50m 41.73245s[2]
赤緯	+15° 08′ 01.0810″[2]
視星等（V）	9.70[3]
特性
光谱分类	M5-8e[4]
B−V 色指数	7000150000000000000♠1.500±0.510[3]
变星类型	米拉[5]
天体测定
徑向速度 (Rv)	7001238000000000000♠23.8±0.8[6] km/s
自行 (μ)	赤经：+2.387[2] mas/yr 赤纬：−36.699[2] mas/yr
视差 (π)	3.5110 ± 0.2966[2] mas
距离	930 ± 80 ly (280 ± 20 pc)
詳細資料
半徑	~380[7] R☉
亮度	1,704.70[8] L☉
溫度	7003278000000000000♠2,780±80[9] K
其他命名
R Ser、​BD+15° 2918、​HD 141850、​HIP 77615、​HR 5894、​SAO 101771[10]
參考資料庫
SIMBAD	资料

參考資料

1. Download Data. aavso.org. AAVSO. [1 October 2021]. （原始内容存档于2023-03-15）.
2. Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051.
3. Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, S2CID 119257644, arXiv:1108.4971 , doi:10.1134/S1063773712050015.
4. Keenan, Philip C.; et al, Revised Catalog of Spectra of Mira Variables of Types ME and Se, Astrophysical Journal Supplement, 1974, 28: 271, Bibcode:1974ApJS...28..271K, doi:10.1086/190318 .
5. Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N, General catalogue of variable stars: Version GCVS 5.1, Astronomy Reports, 2017, 61 (1): 80, Bibcode:2017ARep...61...80S, S2CID 125853869, doi:10.1134/S1063772917010085.
6. Gontcharov, G. A., Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system, Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, S2CID 119231169, arXiv:1606.08053 , doi:10.1134/S1063773706110065.
7. Pasinetti Fracassini, L. E.; et al, Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS), Astronomy and Astrophysics Third, February 2001, 367: 521–524, Bibcode:2001A&A...367..521P, S2CID 425754, arXiv:astro-ph/0012289 , doi:10.1051/0004-6361:20000451.
8. McDonald, I.; et al, Fundamental parameters and infrared excesses of Hipparcos stars, Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–357, Bibcode:2012MNRAS.427..343M, S2CID 118665352, arXiv:1208.2037 , doi:10.1111/j.1365-2966.2012.21873.x.
9. Hofmann, K. -H.; et al, Observations of Mira stars with the IOTA/FLUOR interferometer and comparison with Mira star models, New Astronomy, January 2002, 7 (1): 9–20, Bibcode:2002NewA....7....9H, S2CID 14854720, arXiv:astro-ph/0004013 , doi:10.1016/S1384-1076(01)00085-9.
10. R Ser. SIMBAD. 斯特拉斯堡天文資料中心.
11. Watson, Christopher. R Serpentis. AAVSO Website. American Association of Variable Star Observers. 4 January 2010 [22 May 2014]. （原始内容存档于2021-05-16）.
12. Zsoldos, E. Three Early Variable Star Catalogues. Journal for the History of Astronomy. 1994, 25 (2): 92–98 [2023-10-27]. Bibcode:1994JHA....25...92Z. S2CID 117099222. doi:10.1177/002182869402500202. （原始内容存档于2023-10-28）.