Astronomy:TT Corvi
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Short description: Variable star in the constellation Corvus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Corvus[1] |
| Right ascension | 12h 23m 18.867s[2] |
| Declination | −11° 48′ 43.63″[2] |
| Apparent magnitude (V) | 6.47 to 6.57[3] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M3III[3] |
| Variable type | semiregular[3] |
| Astrometry | |
| Radial velocity (Rv) | −0.17±0.15[2] km/s |
| Proper motion (μ) | RA: −51.390[2] mas/yr Dec.: −10.877[2] mas/yr |
| Parallax (π) | 3.2721 ± 0.0484[2] mas |
| Distance | 1,000 ± 10 ly (306 ± 5 pc) |
| Absolute magnitude (MV) | −0.75[1] |
| Details | |
| Mass | 1.7[2] M☉ |
| Radius | 80[5] R☉ |
| Luminosity | 859[2] L☉ |
| Surface gravity (log g) | 1.39[6] cgs |
| Temperature | 3,606[5] K |
| Age | 287[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
TT Corvi (TT Crv) is a semiregular variable star in the constellation Corvus. It is a red giant of spectral type M3III and average apparent magnitude 6.48 around 923 light years distant.[8] It shines with a luminosity approximately 993 times that of the Sun and has a surface temperature of 3,630 K.[9]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports 61 (1): 80. doi:10.1134/S1063772917010085. Bibcode: 2017ARep...61...80S.
- ↑ 4.0 4.1 "TT Corvi". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TT+Corvi.
- ↑ 5.0 5.1 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ 6.0 6.1 Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A. et al. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics 669: A104. doi:10.1051/0004-6361/202244283. Bibcode: 2023A&A...669A.104K.
- ↑ "ASAS All Star Catalogue". The All Sky Automated Survey. http://www.astrouw.edu.pl/asas/?page=aasc.
- ↑ Tabur, V.; Bedding, T. R. (2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society 400 (4): 1945–61. doi:10.1111/j.1365-2966.2009.15588.x. Bibcode: 2009MNRAS.400.1945T.
- ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society 427 (1): 343–57. doi:10.1111/j.1365-2966.2012.21873.x. Bibcode: 2012MNRAS.427..343M.
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