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{{Short description|Star in the constellation Scorpius}}
{{Starbox begin|title=25 Scorpii}}
{{Starbox begin|title=25 Scorpii}}
{{Starbox observe
{{Starbox observe
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|p_error=0.0433
|p_error=0.0433
|parallax_footnote=<ref name=GaiaDR2/>
|parallax_footnote=<ref name=GaiaDR2/>
|absmag_v=0.09<ref name=Anderson2012>{{cite journal | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 }}</ref>
|absmag_v=0.09<ref name=Anderson2012>{{cite journal | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | s2cid=119257644 }}</ref>
}}
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{{Starbox detail
{{Starbox detail
|source=
|source=
|mass={{val|2.075|+0.709|0.993}}<ref name=K2>{{cite journal|title=The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8|author1=Huber, Daniel|author2=Bryson, Stephen T.|author3=Haas, Michael R.|author4=Barclay, Thomas|author5=Barentsen, Geert|author6=Howell, Steve B.|author7=Sharma, Sanjib|author8=Stello, Dennis|author9=Thompson, Susan E.|date=2016|journal=The Astrophysical Journal Supplement Series|volume=224|issue=1|pages=2|bibcode=2016ApJS..224....2H|doi=10.3847/0067-0049/224/1/2|arxiv=1512.02643}}</ref>
|mass={{val|2.075|+0.709|0.993}}<ref name=K2>{{cite journal|title=The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8|author1=Huber, Daniel|author2=Bryson, Stephen T.|author3=Haas, Michael R.|author4=Barclay, Thomas|author5=Barentsen, Geert|author6=Howell, Steve B.|author7=Sharma, Sanjib|author8=Stello, Dennis|author9=Thompson, Susan E.|date=2016|journal=The Astrophysical Journal Supplement Series|volume=224|issue=1|pages=2|bibcode=2016ApJS..224....2H|doi=10.3847/0067-0049/224/1/2|arxiv=1512.02643|s2cid=118621218 |doi-access=free }}</ref>
|radius={{val|12.719|+2.800|-1.943}}<ref name=K2/>
|radius={{val|12.719|+2.800|-1.943}}<ref name=K2/>
|temperature={{val|4777|+76|-133}}<ref name=K2/>
|temperature={{val|4777|+76|-133}}<ref name=K2/>
|luminosity=135<!-- 10^2.13 --><ref name=Sartori>{{cite journal|bibcode=2003A&A...404..913S|doi=10.1051/0004-6361:20030581|arxiv=astro-ph/0304426|title=Formation scenarios for the young stellar associations between galactic longitudes l $\mathsf{= 280\degr{-}360\degr}$ |journal=Astronomy & Astrophysics|volume=404|issue=3|pages=913|year=2003|last1=Sartori|first1=M. J.|last2=Lépine|first2=J. R. D.|last3=Dias|first3=W. S.}}</ref>
|luminosity=135<!-- 10^2.13 --><ref name=Sartori>{{cite journal|bibcode=2003A&A...404..913S|doi=10.1051/0004-6361:20030581|arxiv=astro-ph/0304426|title=Formation scenarios for the young stellar associations between galactic longitudes ''l'' = 280°–360° |journal=Astronomy & Astrophysics|volume=404|issue=3|pages=913–926|year=2003|last1=Sartori|first1=M. J.|last2=Lépine|first2=J. R. D.|last3=Dias|first3=W. S.|s2cid=17411999}}</ref>
|gravity={{val|2.509|0.135|-0.351}}<ref name=K2/>
|gravity={{val|2.509|0.135|-0.351}}<ref name=K2/>
|metal_fe={{val|-0.031|+0.150|-0.480}}<ref name=K2/>
|metal_fe={{val|-0.031|+0.150|-0.480}}<ref name=K2/>
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}}
}}
{{Starbox end}}
{{Starbox end}}
'''25 Scorpii''' (abbreviated to '''25 Sco''') is a [[star]] in the zodiac [[constellation]] of [[Scorpius (constellation)|Scorpius]], located about 920&nbsp;[[light year]]s away from the [[Sun]]. Its [[apparent magnitude]] is 6.71,<ref name=UBV/> so its apparent brightness is at the limit of human eyesight and can only be seen under excellent conditions, according to the [[Bortle scale]]. The object is moving closer to the Earth with a heliocentric [[radial velocity]] of −1.3&nbsp;km/s.<ref name=GaiaDR2/> It is a proposed member of the [[Scorpius-Centaurus association]].<ref name=Murphy2015>{{cite journal
'''25 Scorpii''' (abbreviated to '''25 Sco''') is a [[star]] in the zodiac [[constellation]] of [[Scorpius (constellation)|Scorpius]], located about 920&nbsp;[[light year]]s away from the [[Sun]]. Its [[apparent magnitude]] is 6.71,<ref name=UBV/> so its apparent brightness is at the limit of human eyesight and can only be seen under excellent conditions, according to the [[Bortle scale]]. The object is moving closer to the Earth with a heliocentric [[radial velocity]] of −1.3&nbsp;km/s.<ref name=GaiaDR2/> It is a proposed member of the [[Scorpius–Centaurus association]].<ref name=Murphy2015>{{cite journal
| title=New members of the TW Hydrae Association and two accreting M-dwarfs in Scorpius-Centaurus
| title=New members of the TW Hydrae Association and two accreting M-dwarfs in Scorpius–Centaurus
| display-authors=1 | last1=Murphy | first1=Simon J.
| display-authors=1 | last1=Murphy | first1=Simon J.
| last2=Lawson | first2=Warrick A. | last3=Bento | first3=Joao
| last2=Lawson | first2=Warrick A. | last3=Bento | first3=Joao
| journal=Monthly Notices of the Royal Astronomical Society
| journal=Monthly Notices of the Royal Astronomical Society
| volume=453 | issue=3 | pages=2220–2231 | date=November 2015
| volume=453 | issue=3 | pages=2220–2231 | date=November 2015
| doi=10.1093/mnras/stv1745 | bibcode=2015MNRAS.453.2220M | arxiv=1507.08002 }}</ref>
| doi=10.1093/mnras/stv1745 | doi-access=free | bibcode=2015MNRAS.453.2220M | arxiv=1507.08002 }}</ref>


This is an [[stellar evolution|evolved]] [[bright giant]] with a [[spectral type]] of K0&nbsp;II.<ref name=HD/> It is about two times more massive and over twelve times wider than the Sun.<ref name=K2/> The star is radiating 135<ref name=Sartori/> times the Sun's luminosity from its [[photosphere]] at an [[effective temperature]] of about 4,700&nbsp;[[Kelvin|K]].<ref name=K2/>
This is an [[stellar evolution|evolved]] [[bright giant]] with a [[spectral type]] of K0&nbsp;II.<ref name=HD/> It is about two times more massive and over twelve times wider than the Sun.<ref name=K2/> The star is radiating 135<ref name=Sartori/> times the Sun's luminosity from its [[photosphere]] at an [[effective temperature]] of about 4,700&nbsp;[[Kelvin|K]].<ref name=K2/>
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[[Category:K-type bright giants]]
[[Category:K-type bright giants]]
[[Category:Scorpius–Centaurus Association]]
[[Category:Scorpius–Centaurus association]]
[[Category:Scorpius (constellation)]]
[[Category:Scorpius]]
[[Category:Flamsteed objects|Scorpii, 25]]
[[Category:Flamsteed objects|Scorpii, 25]]
[[Category:Durchmusterung objects]]
[[Category:Durchmusterung objects]]
[[Category:Henry Draper Catalogue objects|151179]]
[[Category:Henry Draper Catalogue objects|151179]]
[[Category:Hipparcos objects|082140]]
[[Category:Hipparcos objects|082140]]
[[Category:HR objects|6225]]
[[Category:Bright Star Catalogue objects|6225]]

Latest revision as of 11:42, 17 July 2024

25 Scorpii
Observation data
Epoch J2000      Equinox J2000
Constellation Scorpius
Right ascension 16h 46m 51.34498s[1]
Declination −25° 31′ 42.8647″[1]
Apparent magnitude (V) 6.71[2]
Characteristics
Spectral type K0 II[3]
B−V color index +1.18[2]
Astrometry
Radial velocity (Rv)−1.31±0.14[1] km/s
Proper motion (μ) RA: −4.165[1] mas/yr
Dec.: −15.630[1] mas/yr
Parallax (π)3.5599 ± 0.0433 mas[1]
Distance920 ± 10 ly
(281 ± 3 pc)
Absolute magnitude (MV)0.09[4]
Details
Mass2.075+0.709
−0.993[5] M☉
Radius12.719+2.800
−1.943[5] R☉
Luminosity135[6] L☉
Surface gravity (log g)2.509+0.135
−0.351[5] cgs
Temperature4777+76
−133[5] K
Metallicity [Fe/H]−0.031+0.150
−0.480[5] dex
Other designations
25 Sco, CD−25° 11667, FK5 5482, HD 151179, HIP 82140, HR 6225, SAO 184630
Database references
SIMBADdata

25 Scorpii (abbreviated to 25 Sco) is a star in the zodiac constellation of Scorpius, located about 920 light years away from the Sun. Its apparent magnitude is 6.71,[2] so its apparent brightness is at the limit of human eyesight and can only be seen under excellent conditions, according to the Bortle scale. The object is moving closer to the Earth with a heliocentric radial velocity of −1.3 km/s.[1] It is a proposed member of the Scorpius–Centaurus association.[7]

This is an evolved bright giant with a spectral type of K0 II.[3] It is about two times more massive and over twelve times wider than the Sun.[5] The star is radiating 135[6] times the Sun's luminosity from its photosphere at an effective temperature of about 4,700 K.[5]

References

[edit]
  1. ^ a b c d e f g Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c Corben, P. M. (1971). "Photoelectric Magnitudes and Colours for Bright Southern Stars". Monthly Notes of the Astron. Soc. Southern Africa. 70: 37. Bibcode:1971MNSSA..30...37C.
  3. ^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5: 0. Bibcode:1999MSS...C05....0H.
  4. ^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  5. ^ a b c d e f g Huber, Daniel; Bryson, Stephen T.; Haas, Michael R.; Barclay, Thomas; Barentsen, Geert; Howell, Steve B.; Sharma, Sanjib; Stello, Dennis; Thompson, Susan E. (2016). "The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8". The Astrophysical Journal Supplement Series. 224 (1): 2. arXiv:1512.02643. Bibcode:2016ApJS..224....2H. doi:10.3847/0067-0049/224/1/2. S2CID 118621218.
  6. ^ a b Sartori, M. J.; Lépine, J. R. D.; Dias, W. S. (2003). "Formation scenarios for the young stellar associations between galactic longitudes l = 280°–360°". Astronomy & Astrophysics. 404 (3): 913–926. arXiv:astro-ph/0304426. Bibcode:2003A&A...404..913S. doi:10.1051/0004-6361:20030581. S2CID 17411999.
  7. ^ Murphy, Simon J.; et al. (November 2015). "New members of the TW Hydrae Association and two accreting M-dwarfs in Scorpius–Centaurus". Monthly Notices of the Royal Astronomical Society. 453 (3): 2220–2231. arXiv:1507.08002. Bibcode:2015MNRAS.453.2220M. doi:10.1093/mnras/stv1745.
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