天壘城十一

天壘城十一(HD 202466)
觀測資料
曆元 J2000
星座 寶瓶座
星官 天壘城(虛宿
赤經 21h 16m 17.77598s[1]
赤緯 -09° 12′ 52.7669″[1]
視星等(V) 6.46[2]
特性
光谱分类M4III:[3]
B−V 色指数1.57[2]
变星类型半規則變星[3]
天体测定
徑向速度 (Rv)8.00[4] km/s
自行 (μ) 赤经:-6.56[1] mas/yr
赤纬:+2.87[1] mas/yr
视差 (π)1.97 ± 0.42[1] mas
距离approx. 1,700 ly
(approx. 500 pc)
绝对星等 (MV)-2.3[3]
詳細資料
質量2.9[3] M
半徑179[3] R
溫度3,700[3] K
其他命名
寶瓶座IW, BD−09°5700, HD 202466, HIP 105019, SAO 145251.
參考資料庫
SIMBAD资料

天壘城十一寶瓶座1414 Aqr)是位於寶瓶座的一顆紅巨星,以佛氏命名法的名稱是寶瓶座14;它也是一顆變星,名稱為寶瓶座IW 。它的變光幅度小於0.1星等,變光週期僅約一天,分類上屬於半規則變星 [3]

參考資料

  1. ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752可免费查阅, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. The Tycho-2 catalogue of the 2.5 million brightest stars. Astronomy and Astrophysics. 2000, 355: L27. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. 
  3. ^ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Koen, Chris; Laney, Dave. Rapidly oscillating M giant stars?. Monthly Notices of the Royal Astronomical Society. 2000, 311 (3): 636. Bibcode:2000MNRAS.311..636K. doi:10.1046/j.1365-8711.2000.03127.x. 
  4. ^ Kharchenko, N. V.; Scholz, R.-D.; Piskunov, A. E.; Röser, S.; Schilbach, E. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations. Astronomische Nachrichten. 2007, 328 (9): 889. Bibcode:2007AN....328..889K. arXiv:0705.0878可免费查阅. doi:10.1002/asna.200710776. 

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