Upsilon Scorpii
Template:Short descriptionScript error: No such module "Distinguish".
Template:Location mark Location of υ Scorpii (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 2.70[2] |
| Characteristics | |
| Spectral type | B2 IV[3] |
| U−B Template:Engvar | −0.854[2] |
| B−V Template:Engvar | −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] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −3.53[5] |
| Details | |
| Mass | Template:Val[6] Template:Solar mass |
| Radius | 6.1[7] Template:Solar radius |
| Luminosity | 7,381[5] Template:Solar luminosity |
| Temperature | Template:Val[7] K |
| Age | Template:Val[6] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Lesath, υ Sco, 34 Sco, 34 Scorpii, CD−37°11638, HD 158408, HIP 85696, HR 6508, SAO 208896[8] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Upsilon Scorpii (υ Scorpii, abbreviated Upsilon Sco, υ Sco), formally named Lesath Template:IPAc-en,[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]
Nomenclature
υ Scorpii (Latinised to Upsilon Scorpii) is the star's Bayer designation.
It bore the traditional name Lesath (alternatively spelled Leschath, Lesuth), from the Arabic las'a "pass (or bite) of a poisonous animal"; but this is a miscorrection by Scaliger (a European astronomer who knew Arabic) for earlier "Alascha", which came from Arabic al laţkha "the foggy patch", referring to the nearby open cluster M7. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[11] to catalogue and standardize proper names for stars. The WGSN approved the name Lesath for this star on 21 August 2016 and it is now so included in the List of IAU-approved Star Names.[9]
Together with Lambda Scorpii (Shaula), Lesath is listed in the Babylonian compendium MUL.APIN as dSharur4 u dShargaz, meaning "Sharur and Shargaz".[12] In Coptic, they were called Minamref[13] The indigenous Boorong people of northwestern Victoria named it as Karik Karik (together with Lambda Scorpii),[14] "the Falcons"[15]
In Chinese, Script error: No such module "Lang". (Script error: No such module "Lang".), meaning Tail, refers to an asterism consisting of Upsilon, Mu1, Epsilon, Zeta1, Zeta2, Eta, Theta, Iota1, Iota2, Kappa, and Lambda Scorpii.[16] Consequently, the Chinese name for Upsilon Scorpii itself is Script error: No such module "Lang". (Script error: No such module "Lang".), "the Ninth Star of Tail".[17]
Namesake
USS Lesuth (AK-125) was a United States Navy Crater class cargo ship named after the star.
Properties
This star has apparent magnitude +2.7[2] and belongs to spectral class B2 IV,[3] with the luminosity class of 'IV' indicating it is a subgiant star. The star's luminosity is 12,300[18] times that of the Sun, while its surface temperature is 22,831[7] kelvins. The star has a radius of 6.1[7] times solar and 11[6] times the mass of the Sun.
References
- ↑ a b c d e f Cite error: Invalid
<ref>tag; no text was provided for refs namedaaa474_2_653 - ↑ a b c d Cite error: Invalid
<ref>tag; no text was provided for refs namedapjs15_459 - ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedhouk1979 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedscfs - ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedAnderson2012 - ↑ a b c Cite error: Invalid
<ref>tag; no text was provided for refs namedmnras410_1_190 - ↑ a b c d Cite error: Invalid
<ref>tag; no text was provided for refs namedmnras189_601 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedSIMBAD - ↑ a b Script error: No such module "citation/CS1".
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedschaaf2007 - ↑ Script error: No such module "citation/CS1".
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedjbaa108_9 - ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Template:In lang 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, Template:ISBN.
- ↑ Template:In lang 香港太空館 - 研究資源 - 亮星中英對照表 Template:Webarchive, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedkaler