HD 168625

**HD 168625**
	; HD 168625 is the left star of the pair below the Omega Nebula. The other is the hypergiant HD 168607.
觀測資料; 曆元 J2000
星座	人馬座
星官
赤經	18h 21m 19.548s[1]
赤緯	-16° 22′ 16.0572″[1]
視星等（V）	8.30–8.41[2]
特性
光谱分类	B6Ia+[3] (B2—B8[4]) May be B60 due to hypergiant designation
U−B 色指数	+0.37[5]
B−V 色指数	+1.41[5]
J−K 色指数	0.599
变星类型	天鵝座α型變星[6]
天体测定
徑向速度 (Rv)	−4.00[7] km/s
自行 (μ)	赤经：−0.71±1.20[1] mas/yr ; 赤纬：+0.01±0.74[1] mas/yr
视差 (π)	0.6212 ± 0.0640[8] mas
距离	approx. 5,300 ly ; (approx. 1,600 pc)
绝对星等 (MV)	−8.39[4]
詳細資料 [4]
半徑	105 R☉
表面重力 (log g)	1.74
亮度	380,000 L☉
溫度	14,000 K
自轉速度 (v sin i)	60 km/s
其他命名
	V4030 Sgr, HD 168625, BD −16°4830, SAO 161375, HIP 89963, AAVSO 1815-168
參考資料庫
SIMBAD	资料

HD 168625是一顆藍色特超巨星，也是亮藍變星候選者，位於人馬座，人們如果使用業餘望遠鏡可以很容易看到它。它與藍色超巨星（藍色變星）HD 168607形成雙星，位於M17（歐米茄星雲）的東南方。

距離

天文學家對於HD 168625的距離多遠還有它與歐米茄星雲、HD 168607之間的關聯尚存疑問；雖然有些人認為這兩顆恆星在物理上是相關的，也都屬於OB星協巨蛇座OB1，距離太陽的距離為2.2千秒差距（7,200 ly）[9]，根據蓋亞數據兩者的距離約為1.6千秒差距（ 5,200 ly）[8]。2002年的一項研究估計這顆恆星距離太陽約為2.8 千秒差距（9,100 ly），與其他兩個天體無關[10]。

參考資料

Van Leeuwen, F. . Astronomy and Astrophysics. 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. S2CID 18759600. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357.
Samus, N. N.; Durlevich, O. V.; et al. . VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S.
Chentsov, E. L.; Ermakov, S. V.; Klochkova, V. G.; Panchuk, V. E.; Bjorkman, K. S.; Miroshnichenko, A. S. . Astronomy and Astrophysics. 2003, 397 (3): 1035–1042. Bibcode:2003A&A...397.1035C. doi:10.1051/0004-6361:20021430 .
Mahy, L.; Hutsemékers, D.; Royer, P.; Waelkens, C. . Astronomy & Astrophysics. 2016, 594: A94. Bibcode:2016A&A...594A..94M. S2CID 119243390. arXiv:1608.01087 . doi:10.1051/0004-6361/201628584.
Ducati, J. R. . CDS/ADC Collection of Electronic Catalogues. 2002, 2237: 0. Bibcode:2002yCat.2237....0D.
Sterken, C.; Arentoft, T.; Duerbeck, H. W.; Brogt, E. . Astronomy and Astrophysics. 1999, 349: 532. Bibcode:1999A&A...349..532S.
Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. . Astronomische Nachrichten. 2007, 328 (9): 889–896. Bibcode:2007AN....328..889K. S2CID 119323941. arXiv:0705.0878 . doi:10.1002/asna.200710776.
Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. . Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天体在盖亚望远镜第二批数据发布的记录
Nazé, Y.; Rauw, G.; Hutsemékers, D. . Astronomy & Astrophysics. 2012, 538: A47. Bibcode:2012A&A...538A..47N. S2CID 43688343. arXiv:1111.6375 . doi:10.1051/0004-6361/201118040. A47.
Pasquali, A.; Nota, A.; Smith, L.J.; Akiyama, S.; Messineo, M.; Clampin, M. . The Astronomical Journal. 2002, 124 (3): 1625–1635. Bibcode:2002AJ....124.1625P. S2CID 118968760. arXiv:astro-ph/0207613 . doi:10.1086/341820.
. The All Sky Automated Survey. [8 December 2021]. （原始内容存档于2023-03-15）.
Chentsov, E.L.; Gorda, E.S. . Astronomy Letters. 2004, 30 (7): 145–180. Bibcode:2004AstL...30..461C. S2CID 122348932. doi:10.1134/1.1774398.
Martayan, C.; Lobel, A.; Baade, D.; Blomme, R.; Frémat, Y.; Lebouquin, J.-B.; Selman, F.; Girard, J.; Mérand, A.; Montagnier, G.; Patru, F.; Mawet, D.; Martins, F.; Rivinius, Th.; Štefl, S.; Zorec, J.; Semaan, T.; Mehner, A.; Kervella, P.; Sana, H.; Schödel, R. . ASP Conference Proceedings. 2012, 464: 293. Bibcode:2012ASPC..464..293M.
Martayan, C.; Lobel, A.; Baade, D.; Mehner, A.; Rivinius, T.; Boffin, Henry M. J.; Ronny, B.; Girard, J.; Mérand, A.; Montagnier, G.; Patru, F.; Mawet, D.; Martins, F.; Rivinius, Th.; Štefl, S.; Zorec, J.; Semaan, T.; Mehner, A.; Kervella, P.; Sana, H.; Schödel, R. (PDF). Astronomy & Astrophysics. 2016, 587: A115 [2023-10-25]. Bibcode:2016A&A...587A.115M. S2CID 1755296. arXiv:1601.03542 . doi:10.1051/0004-6361/201526578. A115. （原始内容存档 (PDF)于2021-05-04）.
Hutsemekers, D.; vanDrom, E.; Gosset, E.; Melnick, J. . Astronomy and Astrophysics. 1994, 2904: 906–914. Bibcode:1994A&A...290..906H.
Umana, G.; Buemi, C.S.; Trigilio, C.; Leto, P.; Hora, J.L. . The Astrophysical Journal. 2010, 718 (2): 1036–1045. Bibcode:2010ApJ...718.1036U. doi:10.1088/0004-637X/718/2/1036 .
Smith, Nathan. . The Astronomical Journal. 2007, 133 (3): 1034–1040. Bibcode:2007AJ....133.1034S. S2CID 17598600. arXiv:astro-ph/0611544 . doi:10.1086/510838.

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[hipparcos-1] Van Leeuwen, F. . Astronomy and Astrophysics. 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. S2CID 18759600. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357.

[gcvs-2] Samus, N. N.; Durlevich, O. V.; et al. . VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S.

[chentsov-3] Chentsov, E. L.; Ermakov, S. V.; Klochkova, V. G.; Panchuk, V. E.; Bjorkman, K. S.; Miroshnichenko, A. S. . Astronomy and Astrophysics. 2003, 397 (3): 1035–1042. Bibcode:2003A&A...397.1035C. doi:10.1051/0004-6361:20021430 .

[mahy-4] Mahy, L.; Hutsemékers, D.; Royer, P.; Waelkens, C. . Astronomy & Astrophysics. 2016, 594: A94. Bibcode:2016A&A...594A..94M. S2CID 119243390. arXiv:1608.01087 . doi:10.1051/0004-6361/201628584.

[ducati-5] Ducati, J. R. . CDS/ADC Collection of Electronic Catalogues. 2002, 2237: 0. Bibcode:2002yCat.2237....0D.

[sterken-6] Sterken, C.; Arentoft, T.; Duerbeck, H. W.; Brogt, E. . Astronomy and Astrophysics. 1999, 349: 532. Bibcode:1999A&A...349..532S.

[KharchenkoScholz2007-7] Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. . Astronomische Nachrichten. 2007, 328 (9): 889–896. Bibcode:2007AN....328..889K. S2CID 119323941. arXiv:0705.0878 . doi:10.1002/asna.200710776.

[dr2-8] Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. . Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天体在盖亚望远镜第二批数据发布的记录

[Naze2011-9] Nazé, Y.; Rauw, G.; Hutsemékers, D. . Astronomy & Astrophysics. 2012, 538: A47. Bibcode:2012A&A...538A..47N. S2CID 43688343. arXiv:1111.6375 . doi:10.1051/0004-6361/201118040. A47.

[Pasquali2002-10] Pasquali, A.; Nota, A.; Smith, L.J.; Akiyama, S.; Messineo, M.; Clampin, M. . The Astronomical Journal. 2002, 124 (3): 1625–1635. Bibcode:2002AJ....124.1625P. S2CID 118968760. arXiv:astro-ph/0207613 . doi:10.1086/341820.

[ASASServer-11] . The All Sky Automated Survey. [8 December 2021]. （原始内容存档于2023-03-15）.

[Chentsov2004-12] Chentsov, E.L.; Gorda, E.S. . Astronomy Letters. 2004, 30 (7): 145–180. Bibcode:2004AstL...30..461C. S2CID 122348932. doi:10.1134/1.1774398.

[Martayan2012-13] Martayan, C.; Lobel, A.; Baade, D.; Blomme, R.; Frémat, Y.; Lebouquin, J.-B.; Selman, F.; Girard, J.; Mérand, A.; Montagnier, G.; Patru, F.; Mawet, D.; Martins, F.; Rivinius, Th.; Štefl, S.; Zorec, J.; Semaan, T.; Mehner, A.; Kervella, P.; Sana, H.; Schödel, R. . ASP Conference Proceedings. 2012, 464: 293. Bibcode:2012ASPC..464..293M.

[Martayan2016-14] Martayan, C.; Lobel, A.; Baade, D.; Mehner, A.; Rivinius, T.; Boffin, Henry M. J.; Ronny, B.; Girard, J.; Mérand, A.; Montagnier, G.; Patru, F.; Mawet, D.; Martins, F.; Rivinius, Th.; Štefl, S.; Zorec, J.; Semaan, T.; Mehner, A.; Kervella, P.; Sana, H.; Schödel, R. (PDF). Astronomy & Astrophysics. 2016, 587: A115 [2023-10-25]. Bibcode:2016A&A...587A.115M. S2CID 1755296. arXiv:1601.03542 . doi:10.1051/0004-6361/201526578. A115. （原始内容存档 (PDF)于2021-05-04）.

[Hutsemekers1994-15] Hutsemekers, D.; vanDrom, E.; Gosset, E.; Melnick, J. . Astronomy and Astrophysics. 1994, 2904: 906–914. Bibcode:1994A&A...290..906H.

[Umana2010-16] Umana, G.; Buemi, C.S.; Trigilio, C.; Leto, P.; Hora, J.L. . The Astrophysical Journal. 2010, 718 (2): 1036–1045. Bibcode:2010ApJ...718.1036U. doi:10.1088/0004-637X/718/2/1036 .

[Smith2007-17] Smith, Nathan. . The Astronomical Journal. 2007, 133 (3): 1034–1040. Bibcode:2007AJ....133.1034S. S2CID 17598600. arXiv:astro-ph/0611544 . doi:10.1086/510838.