蛇夫座 V1054

**V1054 Ophiuchi**
	; 蛇夫座 V1054上耀斑的紫外波段光变曲线
观测资料; 历元 J2000.0
星座	蛇夫座
星官
赤经	16h 55m 25.2222456607s
赤纬	-08° 19′ 21.296969682″
视星等（V）	9.74/10.34/10.84/11.74/16.80
特性
光谱分类	M3 V / M4 Ve / M3.5 V / M7.0 V
天体测定
自行 (μ)	赤经：−817.580±0.052 mas/yr ; 赤纬：−898.595±0.040 mas/yr
视差 (π)	153.8754 ± 0.0474 mas
距离	21.196 ± 0.007 ly ; (6.499 ± 0.002 pc)
绝对星等 (MV)	10.69±0.02 / 11.29±0.05 / 11.79±0.05 / 12.69
VB 8
自行 (μ)	赤经：−813.038±0.063 mas/yr ; 赤纬：−870.609±0.044 mas/yr
视差 (π)	153.9659 ± 0.0570 mas
距离	21.184 ± 0.007 ly ; (6.495 ± 0.002 pc)
绝对星等 (MV)	17.75
	轨道
主星	V1054 Oph A
伴星	V1054 Oph B
绕行周期 (P)	1.717267±0.000039 yr
半长轴 (a)	0.2273±0.0004"; (1.46683 AU)
偏心率 (e)	0.042±0.001
倾斜角 (i)	160.3±0.1°
升交点黄经 (Ω)	−10.2±0.2°
近心点历元 (T)	MJD 53943±3
近心点幅角 (ω); (secondary)	306.0±1.5°
	轨道
主星	V1054 Oph Ba
伴星	V1054 Oph Bb
绕行周期 (P)	2.965509±0.000006 d
半长轴 (a)	0.00687"; (0.04432 AU)
偏心率 (e)	0.0209±0.0008
倾斜角 (i)	164.18±0.08°
近心点历元 (T)	MJD 50919.48±0.03
近心点幅角 (ω); (secondary)	150.0±3.0°
详细资料
V1054 Oph AB
质量	0.4155±0.0057 / 0.3466±0.0047 / 0.3143±0.0040 M☉
Gliese 643
质量	0.19 M☉
详细资料
VB 8
质量	0.0914+0.0026; −0.0025 M☉
半径	0.1214+0.0060; −0.0057 R☉
亮度	0.000645+0.000004; −0.000005 L☉
温度	2,640+65; −64 K
其他命名
	V1054 Oph、BD−08°4352、GJ 644、HD 152751、HIP 82817、SAO 141439、Wolf 630
参考资料库
SIMBAD	The system
	ABab
	A
	Bab
	GJ 643
	C (vB 8)
	vB 8B (artifact)

天球赤道座标： 16^h 55^m 32.0^s，−08° 21′ 30″

蛇夫座 V1054，连同邻近的恒星Gliese 643，是位于蛇夫座的五星系统，距离太阳系21.05光年。它们由五颗恒星组成，都是红矮星。^[8]

概述[编辑]

蛇夫座 V1054/Gliese 643是距离地球10秒差距以内的所有恒星系统中拥有数量最多恒星的恒星系统。^[4] 它也是离地球最近的五星系统^[3] (下一个至少有五颗恒星的最近的恒星系统是距离41.8光年的GJ 2069﹙五颗﹚^[4]和51.6光年的北河二﹙六颗﹚^[3]^[4]^[9]。

该系统由三个广泛分离的部分组成︰

三星系统蛇夫座 V1054 A-Bab (包括距离非常近的双星系统蛇夫座 V1054 Bab)
Gliese 643
蛇夫座 V1054 C (vB 8)

系统的层次结构:^[3]

蛇夫座 V1054/Gliese 643

蛇夫座 V1054/Gliese 643 (蛇夫座 V1054 C 除外)

蛇夫座 V1054 A‑Bab

蛇夫座 V1054 Bab

	蛇夫座 V1054 Ba

	蛇夫座 V1054 Bb

蛇夫座 V1054 A

Gliese 643

蛇夫座 V1054 C (vB 8)

这五颗星中最亮、质量最大的是蛇夫座 V1054 A。距离较近的双星系统蛇夫座 V1054 B 质量比蛇夫座 V1054 A 重。然而，它的总视星等比蛇夫座 V1054 A 的视星等暗 0.1 星等。^[3]

三星系统蛇夫座 V1054 A-Bab 总视星等为 9.02。^[3]

尽管蛇夫座 V1054/Gliese 643 由低质量恒星组成，但该系统的总质量由于成分众多，超过了太阳质量^[3]。(大约1.35 M_☉).

三星系统蛇夫座 V1054 A-Bab[编辑]

蛇夫座 V1054 A-Bab 是一个紧密的三星系统，由更亮的恒星蛇夫座 V1054 A 和质量更大的双星系统蛇夫座 V1054 Bab 组成，彼此绕轨道运行，周期为627天^[4]^[3]或1.72年^[3]。蛇夫座 V1054 Bab 以2.9655天的周期相互环绕。^[4]^[3] 外轨道和内轨道几乎都是圆形的，并且可能是共面的^[4]^[3]（与紧密的三星系统保持一致）。^[4]

较远的恒星[编辑]

Gliese 643[编辑]

Gliese 643 预计距离蛇夫座 V1054 A-Bab 约465AU^[4]

蛇夫座 V1054 C (vB 8)[编辑]

vB 8是蛇夫座 V1054系统中最小、光线最微弱和最远的成员，^[4]^[3]预计距离1420天文单位。由于它仅比Gliese 643和蛇夫座 V1054 A-Bab之间的预计距离大三倍，而且这么小的比例应该会使三星系统运动不稳定，有人认为^[3]蛇夫座 V1054 C 和蛇夫座 V1054 A-Bab的真实距离更大，至少为2840天文单位。^[3]

注释[编辑]

^ Referred to entire V1054 Ophiuchi Bab subsystem.
^ From apparent magnitude and parallax.
^ Assuming weighted mean parallax 154.96 mas.
^ From masses, period and parallax.
^ From masses and period. According to Mazeh et al. 2001, of order of 0.05 a. u.

参考[编辑]

^ Dal, H. A.; Evren, S. A New Method for Classifying Flares of UV Ceti Type Stars: Differences Between Slow and Fast Flares. The Astronomical Journal. August 2010, 140 (2): 483–489 [4 February 2022]. Bibcode:2010AJ....140..483D. S2CID 119308060. arXiv:1206.5791 . doi:10.1088/0004-6256/140/2/483. （原始内容存档于2023-03-22）.
^ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 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.
^ ^3.00 ^3.01 ^3.02 ^3.03 ^3.04 ^3.05 ^3.06 ^3.07 ^3.08 ^3.09 ^3.10 ^3.11 ^3.12 ^3.13 ^3.14 ^3.15 ^3.16 ^3.17 ^3.18 。 Mazeh, Tsevi; Latham, David W.; Goldberg, Elad; Torres, Guillermo; Stefanik, Robert P.; Henry, Todd J.; Zucker, Shay; Gnat, Orly; Ofek, Eran O. Studies of multiple stellar systems - IV. The triple-lined spectroscopic system V1054 Ophiuchi. Monthly Notices of the Royal Astronomical Society. 2001, 325 (1): 343–357. Bibcode:2001MNRAS.325..343M. S2CID 16472347. arXiv:astro-ph/0102451 . doi:10.1046/j.1365-8711.2001.04419.x.
^ ^4.00 ^4.01 ^4.02 ^4.03 ^4.04 ^4.05 ^4.06 ^4.07 ^4.08 ^4.09 ^4.10 ^4.11 ^4.12 ^4.13 Ségransan, Damien; Delfosse, Xavier; Forveille, Thierry; Beuzit, Jean-Luc; Udry, Stéphane; Perrier, Christian; Mayor, Michel. Accurate masses of very low mass stars. III. 16 new or improved masses. Astronomy and Astrophysics. 2000, 364: 665–673. Bibcode:2000A&A...364..665S. arXiv:astro-ph/0010585 .
^ ^5.0 ^5.1 ^5.2 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.
^ ^6.0 ^6.1 ^6.2 ^6.3 Pineda, J. Sebastian; Youngblood, Allison; France, Kevin. The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars. The Astrophysical Journal. September 2021, 918 (1): 23. Bibcode:2021ApJ...918...40P. S2CID 235435757. arXiv:2106.07656 . doi:10.3847/1538-4357/ac0aea. 40.
^ [
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+152751
HD 152751] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心.
^ Bubar, Eric J.; King, Jeremy R. Spectroscopic Abundances and Membership in the Wolf 630 Moving Group. The Astronomical Journal. August 2010, 140 (2): 293–318. Bibcode:2010AJ....140..293B. S2CID 118455341. arXiv:1005.1205 . doi:10.1088/0004-6256/140/2/293.
^ RECONS CENSUS OF OBJECTS NEARER THAN 10 PARSECS. [2023-03-22]. （原始内容存档于2023-05-30）.

[note_4-5] Referred to entire V1054 Ophiuchi Bab subsystem.

[note_3-6] From apparent magnitude and parallax.

[note_1-8] Assuming weighted mean parallax 154.96 mas.

[note_6-9] From masses, period and parallax.

[note_5-10] From masses and period. According to Mazeh et al. 2001, of order of 0.05 a. u.

[Dal2010-1] Dal, H. A.; Evren, S. A New Method for Classifying Flares of UV Ceti Type Stars: Differences Between Slow and Fast Flares. The Astronomical Journal. August 2010, 140 (2): 483–489 [4 February 2022]. Bibcode:2010AJ....140..483D. S2CID 119308060. arXiv:1206.5791 . doi:10.1088/0004-6256/140/2/483. （原始内容存档于2023-03-22）.

[GaiaEDR3-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 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.

[Mazeh2001-3] 3.00 ^3.01 ^3.02 ^3.03 ^3.04 ^3.05 ^3.06 ^3.07 ^3.08 ^3.09 ^3.10 ^3.11 ^3.12 ^3.13 ^3.14 ^3.15 ^3.16 ^3.17 ^3.18 。 Mazeh, Tsevi; Latham, David W.; Goldberg, Elad; Torres, Guillermo; Stefanik, Robert P.; Henry, Todd J.; Zucker, Shay; Gnat, Orly; Ofek, Eran O. Studies of multiple stellar systems - IV. The triple-lined spectroscopic system V1054 Ophiuchi. Monthly Notices of the Royal Astronomical Society. 2001, 325 (1): 343–357. Bibcode:2001MNRAS.325..343M. S2CID 16472347. arXiv:astro-ph/0102451 . doi:10.1046/j.1365-8711.2001.04419.x.

[Ségransan2000-4] 4.00 ^4.01 ^4.02 ^4.03 ^4.04 ^4.05 ^4.06 ^4.07 ^4.08 ^4.09 ^4.10 ^4.11 ^4.12 ^4.13 Ségransan, Damien; Delfosse, Xavier; Forveille, Thierry; Beuzit, Jean-Luc; Udry, Stéphane; Perrier, Christian; Mayor, Michel. Accurate masses of very low mass stars. III. 16 new or improved masses. Astronomy and Astrophysics. 2000, 364: 665–673. Bibcode:2000A&A...364..665S. arXiv:astro-ph/0010585 .

[GaiaEDR3-VB8-7] 5.0 ^5.1 ^5.2 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.

[Pineda2021-11] 6.0 ^6.1 ^6.2 ^6.3 Pineda, J. Sebastian; Youngblood, Allison; France, Kevin. The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars. The Astrophysical Journal. September 2021, 918 (1): 23. Bibcode:2021ApJ...918...40P. S2CID 235435757. arXiv:2106.07656 . doi:10.3847/1538-4357/ac0aea. 40.

[Simbad-12] [
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+152751
HD 152751] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心.

[Bubar2010-13] Bubar, Eric J.; King, Jeremy R. Spectroscopic Abundances and Membership in the Wolf 630 Moving Group. The Astronomical Journal. August 2010, 140 (2): 293–318. Bibcode:2010AJ....140..293B. S2CID 118455341. arXiv:1005.1205 . doi:10.1088/0004-6256/140/2/293.

[Recons_census-14] RECONS CENSUS OF OBJECTS NEARER THAN 10 PARSECS. [2023-03-22]. （原始内容存档于2023-05-30）.

[1]

[2]

[3]

[4]

[note 1]

[note 2]

[5]

[note 3]

[note 4]

[note 5]

[6]

[7]

[8]

[9]

观测资料历元 J2000.0
蛇夫座 V1054上耀斑的紫外波段光变曲线^[1]
星座	蛇夫座
星官
赤经	16^h 55^m 25.2222456607^s^[2]
赤纬	-08° 19′ 21.296969682″^[2]
视星等（V）	9.74/10.34/10.84/11.74/16.80^[3]
特性
光谱分类	M3 V^[4] / M4 Ve^{[note 1]} / M3.5 V^[4] / M7.0 V^[3]
天体测定

自行 (μ)	赤经：2997182419999999999♠−817.580±0.052^[2] mas/yr 赤纬：2997101404999999999♠−898.595±0.040^[2] mas/yr
视差 (π)	153.8754 ± 0.0474^[2] mas
距离	21.196 ± 0.007 ly (6.499 ± 0.002 pc)
绝对星等 (M_V)	7001106900000000000♠10.69±0.02 / 7001112899999999999♠11.29±0.05 / 7001117899999999999♠11.79±0.05 / 12.69^[3]^{[note 2]}
VB 8
自行 (μ)	赤经：2997186962000000000♠−813.038±0.063^[5] mas/yr 赤纬：2997129390999999999♠−870.609±0.044^[5] mas/yr
视差 (π)	153.9659 ± 0.0570^[5] mas
距离	21.184 ± 0.007 ly (6.495 ± 0.002 pc)
绝对星等 (M_V)	17.75^[3]
轨道^[4]
主星	V1054 Oph A
伴星	V1054 Oph B
绕行周期 (P)	7000171726700000000♠1.717267±0.000039^[3] yr
半长轴 (a)	6999227300000000000♠0.2273±0.0004" (7011219434644678881♠1.46683 AU^{[note 3]})
偏心率 (e)	6998420000000000000♠0.042±0.001
倾斜角 (i)	7002160300000000000♠160.3±0.1°
升交点黄经 (Ω)	2998898000000000000♠−10.2±0.2°
近心点历元 (T)	MJD 7004539430000000000♠53943±3
近心点幅角 (ω) (secondary)	7002306000000000000♠306.0±1.5°
轨道^[4]
主星	V1054 Oph Ba
伴星	V1054 Oph Bb
绕行周期 (P)	7005256219977599999♠2.965509±0.000006 d
半长轴 (a)	0.00687^{[note 4]}" (7009663017762942400♠0.04432 AU^{[note 5]})
偏心率 (e)	6998209000000000000♠0.0209±0.0008
倾斜角 (i)	7002164180000000000♠164.18±0.08°
近心点历元 (T)	MJD 7004509194800000000♠50919.48±0.03
近心点幅角 (ω) (secondary)	7002150000000000000♠150.0±3.0°
详细资料
V1054 Oph AB
质量	6999415500000000000♠0.4155±0.0057 / 6999346600000000000♠0.3466±0.0047 / 6999314300000000000♠0.3143±0.0040^[4] M_☉
Gliese 643
质量	0.19^[3] M_☉
详细资料
VB 8
质量	6998914000000000000♠0.0914+0.0026 −0.0025^[6] M_☉
半径	6999121400000000000♠0.1214+0.0060 −0.0057^[6] R_☉
亮度	0.000645+0.000004 −0.000005^[6] L_☉
温度	7003264000000000000♠2,640+65 −64^[6] K

其他命名
V1054 Oph、BD−08°4352、GJ 644、HD 152751、HIP 82817、SAO 141439、Wolf 630^[7]
参考资料库
SIMBAD	The system
	ABab
	A
	Bab
	GJ 643
	C (vB 8)
	vB 8B (artifact)