S Boötis

The visual band light curve of S Boötes, from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 22m 52.9255s[2]
Declination +53° 48′ 37.307″[2]
Apparent magnitude (V) 7.4 - 14.0[3]
Characteristics
Spectral type M3e-6e[3]
B−V color index +1.3[4]
Variable type Mira[3]
Astrometry
Radial velocity (Rv)−17.00[5] km/s
Proper motion (μ) RA: +7.283[2] mas/yr
Dec.: −12.789[2] mas/yr
Parallax (π)0.5746 ± 0.0407 mas[2]
Distance5,700 ± 400 ly
(1,700 ± 100 pc)
Details
Mass2.7[6] M☉
Radius491[7] R☉
Luminosity18,793[6] L☉
Surface gravity (log g)−0.53[6] cgs
Temperature3,007[6] K
Age631[6] Myr
Other designations
HIP 70291, SAO 29125, BD+54°1571, HD 126289[8]
Database references
SIMBADdata

S Boötis is a Mira variable in the constellation Boötes. It ranges between magnitudes 7.8 and 13.8 over a period of approximately 270 days.[3] It is too faint to be seen with the naked eye, however when it is near maximum brightness it can be seen with binoculars.[9]

S Boötis was discovered at Bonn Observatory by Friedrich Wilhelm Argelander in 1860.[10][11][12]

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 VSX (4 January 2010). "S Boötis". AAVSO Website. American Association of Variable Star Observers. Retrieved 17 July 2023.
  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. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  6. 1 2 3 4 5 Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics. 662: A125. arXiv:2201.03252. Bibcode:2022A&A...662A.125F. doi:10.1051/0004-6361/202141828. S2CID 245837778.
  7. ↑ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  8. ↑ "S Bootis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 28 September 2014.
  9. ↑ Macrobert, Alan. "The Stellar Magnitude System". Sky and Telescope. American Astronomical Society. Retrieved 17 July 2023.
  10. ↑ Cannon, Annie J. (1907). "Second catalogue of variable stars". Annals of Harvard College Observatory. 55 (1): 1–94. Retrieved 17 July 2023.
  11. ↑ Isles, J. E.; Saw, D. R. B. (February 1987). "Mira Stars, - I. R Ari, R Aur, X Aur, R Boo and S Boo". Journal of the British Astronomical Association. 97 (2): 106-116. Bibcode:1987JBAA...97..106I. Retrieved 17 July 2023.
  12. ↑ "S Boo". The International Variable Star Index. AAVSO. Retrieved 17 July 2023.


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