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Upsilon Scorpii information


υ Scorpii
Location of υ Scorpii (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 17h 30m 45.83712s[1]
Declination –37° 17′ 44.9285″[1]
Apparent magnitude (V) 2.70[2]
Characteristics
Spectral type B2 IV[3]
U−B color index –0.854[2]
B−V color index –0.221[2]
Astrometry
Radial velocity (Rv)+8.0[4] km/s
Proper motion (μ) RA: –2.37[1] mas/yr
Dec.: 30.09[1] mas/yr
Parallax (π)5.66 ± 0.18 mas[1]
Distance580 ± 20 ly
(177 ± 6 pc)
Absolute magnitude (MV)−3.53[5]
Details
Mass11.4 ± 0.5[6] M
Radius6.1[7] R
Luminosity7381[5] L
Temperature22,831 ± 169[7] K
Age20.0 ± 2.6[6] Myr
Other designations
Lesath, υ Sco, 34 Sco, 34 Scorpii, CD-37° 11638, HD 158408, HIP 85696, HR 6508, SAO 208896.[8]
Database references
SIMBADdata

Upsilon Scorpii (υ Scorpii, abbreviated Upsilon Sco, υ Sco), formally named Lesath /ˈlsæθ/,[9] is a star located in the "stinger" of the southern zodiac constellation of Scorpius, the scorpion. Based on parallax measurements obtained during the Hipparcos mission, it is approximately 580 light-years from the Sun.[1] In the night sky it lies near the 1.6 magnitude star Lambda Scorpii, and the two form an optical pair that is sometimes called the "Cat's Eyes".[10]

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference apjs15_459 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference scfs was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference mnras410_1_190 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference mnras189_601 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ "Naming Stars". IAU.org. Retrieved 18 June 2018.
  10. ^ Cite error: The named reference schaaf2007 was invoked but never defined (see the help page).

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Upsilon Scorpii

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Upsilon ScorpiiScorpii, abbreviated Upsilon Sco, υ Sco), formally named Lesath /ˈliːsæθ/, is a star located in the "stinger" of the southern zodiac...

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Nu Scorpii

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the pair Lambda Scorpii (Shaula) and Upsilon Scorpii (Lesath) by R.H. Allen. Hierarchy of orbits in the ν Scorpii system Nu Scorpii is a septuple star...

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Lambda Scorpii

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consisting of λ Scorpii, ε Scorpii, ζ1 Scorpii, ζ2 Scorpii, η Scorpii, θ Scorpii, ι1 Scorpii, ι2 Scorpii, κ Scorpii, μ1 Scorpii, and υ Scorpii. Consequently...

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Theta Scorpii

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Scorpii, Epsilon Scorpii, Zeta1 Scorpii and Zeta2 Scorpii, Eta Scorpii, Iota1 Scorpii and Iota2 Scorpii, Kappa Scorpii, Lambda Scorpii, Mu1 Scorpii and...

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Mu1 Scorpii

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Scorpii, Epsilon Scorpii, Zeta1 Scorpii and Zeta2 Scorpii, Eta Scorpii, Theta Scorpii, Iota1 Scorpii and Iota2 Scorpii, Kappa Scorpii, Lambda Scorpii...

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Kappa Scorpii

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Scorpii, Upsilon Scorpii, and Iota Scorpii. In Chinese, 尾宿 (Wěi Xiù), meaning Tail, refers to an asterism consisting κ Scorpii, μ1 Scorpii, ε Scorpii...

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List of brightest natural objects in the sky

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Epsilon Scorpii

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Epsilon Scorpii, Mu¹ Scorpii, Zeta¹ Scorpii and Zeta² Scorpii, Eta Scorpii, Theta Scorpii, Iota² Scorpii and Iota¹ Scorpii, Kappa Scorpii, Lambda Scorpii and...

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List of Arabic star names

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Arabic name Scientific star name Lesath al-Lasʿah The sting اللسعة Upsilon Scorpii Luh-Denebola / Denebola Dhanab al-Asad/al-Layth the lion's tail ذنب...

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Omicron Scorpii

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originally designated by Bayer as Omicron Scorpii was reassigned to Libra as Upsilon Librae.: 196, 278  Omicron Scorpii was occasionally mentioned as a possible...

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Bayer designation

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Bayer's Gamma and Omicron Scorpii, for example, were later reassigned from Scorpius to Libra and given the new names Sigma and Upsilon Librae.: p. 196  (To...

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handful of stars called recurrent novae, which include T Pyxidis and U Scorpii. An outburst of T Coronae Borealis was first recorded in 1866; its second...

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Insomniacs After School

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Ikeda Yūki Ikeda April 11, 2023 (2023-04-11) 2 "The Cat's Eyes -Upsilon and Lambda Scorpii-" Transliteration: "Neko no Meboshi -Sasoriza no Nibanboshi-"...

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List of brown dwarfs

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Major 11h 18m 12s +31° 32′ 15″ 4.73 25.11 F8.5V b 37 3.98 0.06 0 1931 Upsilon Andromedae Andromeda 01h 36m 48s +41° 24′ 20″ 4.63 43.9 F8V Samh 13.98...

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List of most massive stars

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Štefl, S.; et al. (2013). "The 2011 periastron passage of the Be binary δ Scorpii". The Astrophysical Journal. 766 (2): 119. arXiv:1302.4021. Bibcode:2013ApJ...

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List of Chinese star names

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Jiàn Bì Door Bolt Nu Scorpii Jabbah Scorpius A single-star asterism in the Room mansion 神宮 Shén Gōng Changing Room Mu2 Scorpii Pipirima A single-star...

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