格利澤318

**Gliese 318**
觀測資料; 曆元 J2000
星座	羅盤座
星官
赤經	08h 41m 32.50s
赤緯	–32° 56′ 34.0″
視星等（V）	11.85
特性
光谱分类	DA5.5
U−B 色指数	−0.59
B−V 色指数	+0.25
天体测定
徑向速度 (Rv)	+29.3 ± 2.9 km/s
自行 (μ)	赤经：–1100 ± 9 mas/yr ; 赤纬：1340 ± 8 mas/yr
视差 (π)	113.63 ± 1.97 mas
距离	28.7 ± 0.5 ly ; (8.8 ± 0.2 pc)
绝对星等 (MV)	12.14 ± 0.05
詳細資料
質量	0.45 ± 0.01 M☉
亮度	0.0015 L☉
溫度	9120 ± 190 K
年齡	550 ± 20 million 年
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	资料
ARICNS	资料

天球赤道座標： 08^h 41^m 32.50^s，−32° 56′ 34.0″

格利澤318是一顆位於羅盤座的白矮星。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]。

參考資料

^ ^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. （原始内容存档于2022-09-20）.
^ ^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.
^ Mermilliod, J.-C. Compilation of Eggen's UBV data, transformed to UBV (unpublished).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. （原始内容存档于2019-12-08）.
^ ^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.
^ 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.

这是一篇與恆星相關的小作品。你可以通过编辑或修订扩充其内容。

[2MASS-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. （原始内容存档于2022-09-20）.

[Gaia-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.

[EgUBV-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. （原始内容存档于2019-12-08）.

[Subasavage-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.

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觀測資料曆元 J2000
星座	羅盤座
星官
赤經	08^h 41^m 32.50^s^[1]
赤緯	–32° 56′ 34.0″^[1]
視星等（V）	11.85^[2]
特性
光谱分类	DA5.5
U−B 色指数	−0.59^[1]
B−V 色指数	+0.25^[3]
天体测定

徑向速度 (R_v)	+29.3 ± 2.9 km/s
自行 (μ)	赤经：–1100 ± 9 mas/yr 赤纬：1340 ± 8 mas/yr
视差 (π)	113.63 ± 1.97^[4] mas
距离	28.7 ± 0.5 ly (8.8 ± 0.2 pc)
绝对星等 (M_V)	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] 年

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	资料
ARICNS	资料