LP 71-82

**LP 71-82**
	; LP 71-82的R波段光变曲线显示耀斑
观测资料; 历元 J2000.0
星座	天龙座
星官
赤经	18h 02m 16.60s
赤纬	64° 15′ 44.6″
视星等（V）	13.51
特性
光谱分类	M5.0V
视星等 (J)	8.54
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 mas
距离	25.420 ± 0.006 ly ; (7.794 ± 0.002 pc)
详细资料
质量	0.16+0.01; − M☉
半径	0.195+0.002; − R☉
表面重力 (log g)	4.5
亮度	0.0033+0.0003; − L☉
温度	3124+51; − K
自转	0.28018+0.000010; − d
自转速度 (v sin i)	11.3+1.5; − km/s
年龄	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
参考数据库
SIMBAD	资料

LP 71-82是一颗位于天龙座的红矮星。距离地球25.42光年。^[3]在运动学上，它可能属于大熊座移动星群。^[6]

Quick Facts 观测资料历元 J2000.0, 特性 ...

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多重调查没有发现 LP 71-82在2014年有任何恒星伴星。^[7]

LP 71-82是一颗活动非常强烈的耀星，^[1]到2019年至少检测到四次耀斑。^[5]对于一颗只有6小时的短自转周期的恒星来说，预计会有这样的活动。^[4] ^[8]

[1]
Mt. Suhora Survey – Searching for Pulsating M Dwarfs. III (PDF). [2023-04-01]. （原始内容存档 (PDF)于2022-06-29）.
[2]
Reiners, A.; et al, The CARMENES search for exoplanets around M dwarfs, Astronomy & Astrophysics, 2017, 612: A49, arXiv:1711.06576 , doi:10.1051/0004-6361/201732054
[3]
Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. 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.
[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., Persistent Starspot Signals on M Dwarfs: Multiwavelength Doppler Observations with the Habitable-zone Planet Finder and Keck/HIRES, The Astrophysical Journal, 2020, 897 (2): 125, Bibcode:2020ApJ...897..125R, S2CID 218718929, arXiv:2005.09657 , doi:10.3847/1538-4357/ab989f
[5]
Rodríguez Martínez, Romy; Lopez, Laura A.; Shappee, Benjamin J.; Schmidt, Sarah J.; Jayasinghe, Tharindu; Kochanek, Christopher S.; Auchettl, Katie; Holoien, Thomas W.-S., A Catalog of M-dwarf Flares with ASAS-SN, The Astrophysical Journal, 2019, 892 (2): 144, S2CID 209323915, arXiv:1912.05549 , doi:10.3847/1538-4357/ab793a
[6]
Reliable probabilistic determination of membership in stellar kinematic groups in the young disk, Table 4. [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 Astralux Multiplicity Survey: Extension to Late M-Dwarfs, 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., Magnetic fields in M dwarfs from the CARMENES survey, Astronomy & Astrophysics, 2019, 626: A86, Bibcode:2019A&A...626A..86S, S2CID 139101130, arXiv:1904.12762 , doi:10.1051/0004-6361/201935315

这是一篇与恒星相关的小作品。您可以通过编辑或修订扩充其内容。

[Baran2014-1] [1]
Mt. Suhora Survey – Searching for Pulsating M Dwarfs. III (PDF). [2023-04-01]. （原始内容存档 (PDF)于2022-06-29）.

[2] [2]
Reiners, A.; et al, The CARMENES search for exoplanets around M dwarfs, Astronomy & Astrophysics, 2017, 612: A49, arXiv:1711.06576 , doi:10.1051/0004-6361/201732054

[EDR3-3] [3]
Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. 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] [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., Persistent Starspot Signals on M Dwarfs: Multiwavelength Doppler Observations with the Habitable-zone Planet Finder and Keck/HIRES, The Astrophysical Journal, 2020, 897 (2): 125, Bibcode:2020ApJ...897..125R, S2CID 218718929, arXiv:2005.09657 , doi:10.3847/1538-4357/ab989f

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

[6] [6]
Reliable probabilistic determination of membership in stellar kinematic groups in the young disk, Table 4. [2023-04-01]. （原始内容存档于2020-10-28）.

[7] [7]
Janson, Markus; Bergfors, Carolina; Brandner, Wolfgang; Kudryavtseva, Natalia; Hormuth, Felix; Hippler, Stefan; Henning, Thomas, The Astralux Multiplicity Survey: Extension to Late M-Dwarfs, 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] [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., Magnetic fields in M dwarfs from the CARMENES survey, Astronomy & Astrophysics, 2019, 626: A86, Bibcode:2019A&A...626A..86S, S2CID 139101130, arXiv:1904.12762 , doi:10.1051/0004-6361/201935315

[3]

[6]

[1]

[2]

[4]

[5]

[7]

[8]

观测资料历元 J2000.0
LP 71-82的R波段光变曲线显示耀斑^[1]
星座	天龙座
星官
赤经	18^h 02^m 16.60^s
赤纬	64° 15′ 44.6″
视星等（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)

详细资料 ^{^[4]}

质量	0.16+0.01 − M_☉
半径	0.195+0.002 − R_☉
表面重力 (log g)	4.5^[5]
亮度	0.0033+0.0003 − L_☉
温度	3124+51 − K
自转	0.28018+0.000010 − d
自转速度 (v sin i)	11.3+1.5 − km/s
年龄	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
参考数据库
SIMBAD	资料

观测资料历元 J2000.0
LP 71-82的R波段光变曲线显示耀斑^[1]
星座	天龙座
星官
赤经	18^h 02^m 16.60^s
赤纬	64° 15′ 44.6″
视星等（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)

详细资料 ^{^[4]}

质量	0.16+0.01 − M_☉
半径	0.195+0.002 − R_☉
表面重力 (log g)	4.5^[5]
亮度	0.0033+0.0003 − L_☉
温度	3124+51 − K
自转	0.28018+0.000010 − d
自转速度 (v sin i)	11.3+1.5 − km/s
年龄	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
参考数据库
SIMBAD	资料

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LP 71-82

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物理特性

参考资料