LP 71-82

**LP 71-82**
	; LP 71-82的R波段光變曲線顯示耀斑[1]
觀測資料; 曆元 J2000.0
星座	天龍座
星官
赤經	18h 02m 16.60s
赤緯	64° 15′ 44.6″
視星等（V）	13.51[1]
特性
光谱分类	M5.0V
视星等 (J)	8.54[2]
天体测定
自行 (μ)	赤经：196.394 mas/yr ; 赤纬：-383.789 mas/yr
视差 (π)	128.3057 ± 0.0319[3] mas
距离	25.420 ± 0.006 ly ; (7.794 ± 0.002 pc)
詳細資料 [4]
質量	0.16+0.01; − M☉
半徑	0.195+0.002; − R☉
表面重力 (log g)	4.5[5]
亮度	0.0033+0.0003; − L☉
溫度	3124+51; − K
自轉	0.28018+0.000010; − d
自轉速度 (v sin i)	11.3+1.5; − km/s
年齡	0.5+1.1; −0.34 Gyr
其他命名
	G 227-22、LP 71-82、LSPM J1802+6415、NLTT 45873、GSC 04209-01465、2MASS J18021660+6415445
參考資料庫
SIMBAD	资料

LP 71-82是一顆位於天龍座的紅矮星。距離地球25.42光年。[3]在運動學上，它可能屬於大熊座移動星群。[6]

多重調查沒有發現 LP 71-82在2014年有任何恆星伴星。[7]

物理特性

LP 71-82是一顆活動非常強烈的耀星，[1]到2019年至少檢測到四次耀斑。[5]對於一顆只有6小時的短自轉週期的恆星來說，預計會有這樣的活動。[4] [8]

參考資料

(PDF). [2023-04-01]. （原始内容存档 (PDF)于2022-06-29）.
Reiners, A.; et al, , Astronomy & Astrophysics, 2017, 612: A49, arXiv:1711.06576 , doi:10.1051/0004-6361/201732054
Brown, A. G. A.; et al. . Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 . 已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
Robertson, Paul; Stefansson, Gudmundur; Mahadevan, Suvrath; Endl, Michael; Cochran, William D.; Beard, Corey; Bender, Chad F.; Diddams, Scott A.; Duong, Nicholas; Ford, Eric B.; Fredrick, Connor; Halverson, Samuel; Hearty, Fred; Holcomb, Rae; Juan, Lydia; Kanodia, Shubham; Lubin, Jack; Metcalf, Andrew J.; Monson, Andrew; Ninan, Joe P.; Palafoutas, Jonathan; Ramsey, Lawrence W.; Roy, Arpita; Schwab, Christian; Terrien, Ryan C.; Wright, Jason T., , The Astrophysical Journal, 2020, 897 (2): 125, Bibcode:2020ApJ...897..125R, S2CID 218718929, arXiv:2005.09657 , doi:10.3847/1538-4357/ab989f
Rodríguez Martínez, Romy; Lopez, Laura A.; Shappee, Benjamin J.; Schmidt, Sarah J.; Jayasinghe, Tharindu; Kochanek, Christopher S.; Auchettl, Katie; Holoien, Thomas W.-S., , The Astrophysical Journal, 2019, 892 (2): 144, S2CID 209323915, arXiv:1912.05549 , doi:10.3847/1538-4357/ab793a
. [2023-04-01]. （原始内容存档于2020-10-28）.
Janson, Markus; Bergfors, Carolina; Brandner, Wolfgang; Kudryavtseva, Natalia; Hormuth, Felix; Hippler, Stefan; Henning, Thomas, , The Astrophysical Journal, 2014, 789 (2): 102, Bibcode:2014ApJ...789..102J, S2CID 118403775, arXiv:1406.0535 , doi:10.1088/0004-637X/789/2/102
Shulyak, D.; Reiners, A.; Nagel, E.; Tal-Or, L.; Caballero, J. A.; Zechmeister, M.; Béjar, V. J. S.; Cortés-Contreras, M.; Martin, E. L.; Kaminski, A.; Ribas, I.; Quirrenbach, A.; Amado, P. J.; Anglada-Escudé, G.; Bauer, F. F.; Dreizler, S.; Guenther, E. W.; Henning, T.; Jeffers, S. V.; Kürster, M.; Lafarga, M.; Montes, D.; Morales, J. C.; Pedraz, S., , Astronomy & Astrophysics, 2019, 626: A86, Bibcode:2019A&A...626A..86S, S2CID 139101130, arXiv:1904.12762 , doi:10.1051/0004-6361/201935315

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[Baran2014-1] (PDF). [2023-04-01]. （原始内容存档 (PDF)于2022-06-29）.

[2] Reiners, A.; et al, , Astronomy & Astrophysics, 2017, 612: A49, arXiv:1711.06576 , doi:10.1051/0004-6361/201732054

[EDR3-3] Brown, A. G. A.; et al. . Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 . 已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.

[Robertson2020-4] Robertson, Paul; Stefansson, Gudmundur; Mahadevan, Suvrath; Endl, Michael; Cochran, William D.; Beard, Corey; Bender, Chad F.; Diddams, Scott A.; Duong, Nicholas; Ford, Eric B.; Fredrick, Connor; Halverson, Samuel; Hearty, Fred; Holcomb, Rae; Juan, Lydia; Kanodia, Shubham; Lubin, Jack; Metcalf, Andrew J.; Monson, Andrew; Ninan, Joe P.; Palafoutas, Jonathan; Ramsey, Lawrence W.; Roy, Arpita; Schwab, Christian; Terrien, Ryan C.; Wright, Jason T., , The Astrophysical Journal, 2020, 897 (2): 125, Bibcode:2020ApJ...897..125R, S2CID 218718929, arXiv:2005.09657 , doi:10.3847/1538-4357/ab989f

[Martinez2019-5] Rodríguez Martínez, Romy; Lopez, Laura A.; Shappee, Benjamin J.; Schmidt, Sarah J.; Jayasinghe, Tharindu; Kochanek, Christopher S.; Auchettl, Katie; Holoien, Thomas W.-S., , The Astrophysical Journal, 2019, 892 (2): 144, S2CID 209323915, arXiv:1912.05549 , doi:10.3847/1538-4357/ab793a

[6] . [2023-04-01]. （原始内容存档于2020-10-28）.

[7] Janson, Markus; Bergfors, Carolina; Brandner, Wolfgang; Kudryavtseva, Natalia; Hormuth, Felix; Hippler, Stefan; Henning, Thomas, , The Astrophysical Journal, 2014, 789 (2): 102, Bibcode:2014ApJ...789..102J, S2CID 118403775, arXiv:1406.0535 , doi:10.1088/0004-637X/789/2/102

[8] Shulyak, D.; Reiners, A.; Nagel, E.; Tal-Or, L.; Caballero, J. A.; Zechmeister, M.; Béjar, V. J. S.; Cortés-Contreras, M.; Martin, E. L.; Kaminski, A.; Ribas, I.; Quirrenbach, A.; Amado, P. J.; Anglada-Escudé, G.; Bauer, F. F.; Dreizler, S.; Guenther, E. W.; Henning, T.; Jeffers, S. V.; Kürster, M.; Lafarga, M.; Montes, D.; Morales, J. C.; Pedraz, S., , Astronomy & Astrophysics, 2019, 626: A86, Bibcode:2019A&A...626A..86S, S2CID 139101130, arXiv:1904.12762 , doi:10.1051/0004-6361/201935315