24 Scorpii

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

24 Scorpii
Ophiuchus constellation map.svg
Red circle.svg
Location of 24 Scorpii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 16h 41m 34.38333s[1]
Declination −17° 44′ 31.7985″[1]
Apparent magnitude (V) 4.91[2]
Characteristics
Spectral type G7.5IICN1Ba0.4[3]
U−B color index +0.85[4]
B−V color index +1.11[4]
Astrometry
Radial velocity (Rv)-25.20[5] km/s
Proper motion (μ) RA: -21.08[1] mas/yr
Dec.: -0.69[1] mas/yr
Parallax (π)7.91 ± 0.30[1] mas
Distance410 ± 20 ly
(126 ± 5 pc)
Absolute magnitude (MV)-0.60[2]
Details
Mass2.72[6] M
Radius21.43[6] R
Luminosity204[6] L
Surface gravity (log g)2.23[6] cgs
Temperature4,717[6] K
Metallicity [Fe/H]-0.13[6] dex
Rotational velocity (v sin i)5.3[7] km/s
Other designations
BD-17°4618, FK5 624, GC 22449, GJ 9574, HIP 81724, HR 6196, HD 150416, SAO 160046
Database references
SIMBADdata

24 Scorpii (24 Sco) is a class G7.5II[3] (yellow bright giant) star in the constellation Ophiuchus. Its apparent magnitude is 4.91[2] and it is approximately 412 light years away based on parallax.[1]

References[edit]

  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H. 
  4. ^ a b Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M. Vizier catalog entry
  5. ^ Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336. 
  6. ^ a b c d e f Reffert, Sabine; Bergmann, Christoph; Quirrenbach, Andreas; Trifonov, Trifon; Künstler, Andreas (2015). "Precise radial velocities of giant stars". Astronomy & Astrophysics. 574: A116. arXiv:1412.4634Freely accessible. Bibcode:2015A&A...574A.116R. doi:10.1051/0004-6361/201322360.  Vizier catalog entry
  7. ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474Freely accessible. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762.  Vizier catalog entry