格利澤318是一顆位於羅盤座白矮星。光譜分類為DA5.5,視星等為11.85[2],距離地球27.7光年[5]。這顆恆星太暗了。[4]它的質量約為太陽的45%,但光度僅為太陽的0.15%[4]

Gliese 318
觀測資料
曆元 J2000
星座 羅盤座
星官
赤經 08h 41m 32.50s[1]
赤緯 –32° 56′ 34.0″[1]
視星等(V) 11.85[2]
特性
光譜分類DA5.5
U−B 色指數−0.59[1]
B−V 色指數+0.25[3]
天體測定
徑向速度 (Rv)+29.3 ± 2.9 km/s
自行 (μ) 赤經:–1100 ± 9 mas/yr
赤緯:1340 ± 8 mas/yr
視差 (π)113.63 ± 1.97[4] mas
距離28.7 ± 0.5 ly
(8.8 ± 0.2 pc)
絕對星等 (MV)12.14 ± 0.05[4]
詳細資料
質量0.45 ± 0.01[4] M
亮度0.0015[4] L
溫度9120 ± 190[4] K
年齡550 ± 20 million[4]
其他命名
GJ 318, CD−32° 5613, LHS 253, L 532-81, LTT 3218, WD 0839-327
參考資料庫
SIMBAD資料
ARICNS資料

參考資料

編輯
  1. ^ 1.0 1.1 1.2 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). CDS/ADC Collection of Electronic Catalogues. 2003, 2246: II/246 [2023-04-12]. Bibcode:2003yCat.2246....0C. (原始內容存檔於2022-09-20). 
  2. ^ 2.0 2.1 Pancino, E.; Altavilla, G.; Marinoni, S.; Cocozza, G.; Carrasco, J. M.; Bellazzini, M.; Bragaglia, A.; Federici, L.; Rossetti, E.; Cacciari, C.; Balaguer Núñez, L.; Castro, A.; Figueras, F.; Fusi Pecci, F.; Galleti, S.; Gebran, M.; Jordi, C.; Lardo, C.; Masana, E.; Monguió, M.; Montegriffo, P.; Ragaini, S.; Schuster, W.; Trager, S.; Vilardell, F.; Voss, H. The Gaia spectrophotometric standard stars survey - I. Preliminary results. Monthly Notices of the Royal Astronomical Society. 2012, 426 (3): 1767–81. Bibcode:2012MNRAS.426.1767P. S2CID 27564967. arXiv:1207.6042 . doi:10.1111/j.1365-2966.2012.21766.x. 
  3. ^ Mermilliod, J.-C. Compilation of Eggen's UBV data, transformed to UBV (unpublished). Catalogue of Eggen's UBV Data. 1986 [2023-04-12]. Bibcode:1986EgUBV........0M. (原始內容存檔於2019-12-08). 
  4. ^ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Subasavage, John P.; Jao, Wei-Chun; Henry, Todd J.; Bergeron, P.; Dufour, P.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. The Solar Neighborhood. XXI. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the 25 Parsec White Dwarf Sample. The Astronomical Journal. 2009, 137 (6): 4547–60. Bibcode:2009AJ....137.4547S. S2CID 14696597. arXiv:0902.0627 . doi:10.1088/0004-6256/137/6/4547. 
  5. ^ Sion, Edward M. 1.The White Dwarfs Within 20 Parsecs of the Sun: Kinematics and Statistics. The Astronomical Journal. 2009, 138 (6): 1681. Bibcode:2009AJ....138.1681S. S2CID 119284418. arXiv:0910.1288 . doi:10.1088/0004-6256/138/6/1681.