astro.wikisort.org - Star
S Coronae Australis (S CrA), is a young binary star system estimated to be around 2 million years old located in the constellation Corona Australis. It is composed of a G-type main sequence star that is about as luminous as and just over twice as massive as the Sun, and a smaller K-type main sequence star that has around 50-60% of the Sun's luminosity and 1.3 times its mass. Both stars are T Tauri stars and both show evidence of having circumstellar disks. The system is around 140 parsecs distant.[3]
 A visual band light curve for S Coronae Australis, adapted from Mundt (1979).[1] The error bar shown on the left-most point applies to all points. | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Corona Australis |
| Right ascension | 19h 01m 08.59709s[2] |
| Declination | −36° 57′ 19.8950″[2] |
| Apparent magnitude (V) | 10.91[2] |
| Characteristics | |
| Spectral type | G0Ve + K0Ve[3] |
| Variable type | T Tau[3] |
| Astrometry | |
| Radial velocity (Rv) | −33 ± 5[4] km/s |
| Proper motion (μ) | RA: −2.6 ± 5.8[2] mas/yr Dec.: −9.8 ± 2.3[2] mas/yr |
| Distance | 460 ly (140[3] pc) |
| Details | |
| Other designations | |
S CrA, S Coronae Australis, HH 82 | |
| Database references | |
| SIMBAD | data |
References
- Mundt, R. (April 1979). "Spectroscopic and photometric variations of the YY Orionis star S CrA". Astronomy & Astrophysics. 74: 21–29. Retrieved 14 December 2021.
- Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; Monet, D. G.; Zacharias, M. I. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.
- Carmona, A.; van den Ancker, M. E.; Henning, Th. (2007). "Optical spectroscopy of close companions to nearby Herbig Ae/Be and T Tauri stars". Astronomy and Astrophysics. 464 (2): 687–95. arXiv:astro-ph/0701208. Bibcode:2007A&A...464..687C. doi:10.1051/0004-6361:20065509. S2CID 14372262.
- Ralph Elmer Wilson (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W. LCCN 54001336.
Constellation of Corona Australis | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||
| Stars |
| ||||||||||
| |||||||||||
| |||||||||||
 Category | |||||||||||
 | This variable star–related article is a stub. You can help Wikipedia by expanding it. |
Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии
WikiSort.org - проект по пересортировке и дополнению контента Википедии