UX Lyncis
UX Lyncis is a star in the constellation Lynx. It is a red giant of spectral type M3. It has been classified as a semiregular variable ranging from magnitude 6.6 to 6.78,[4] Its changes in brightness are complex, with a shorter period of 37.3 days due to the star's pulsations, and a longer period of 420 days possibly due to the star's rotation or convectively induced oscillatory thermal (COT) mode.[5] Located around 800 light-years distant, it shines with a luminosity approximately 2240 times that of the Sun and has a surface temperature of 3323 K.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 09h 03m 47.10771s[1] |
| Declination | +38° 44′ 31.6543″[1] |
| Characteristics | |
| Spectral type | M3 |
| Variable type | Semiregular variable |
| Astrometry | |
| Radial velocity (Rv) | 38.60 ± 0.64 km/s |
| Proper motion (μ) | RA: –16.64 ± 0.65[1] mas/yr Dec.: -20.01 ± 0.30[1] mas/yr |
| Parallax (π) | 4.16 ± 0.63[1] mas |
| Distance | approx. 800 ly (approx. 240 pc) |
| Details | |
| Luminosity | 2240[2] L☉ |
| Temperature | 3323[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- 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. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
- "1 Lyncis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 March 2016.
- Watson, Christopher (4 January 2010). "UX Lyncis". AAVSO Website. American Association of Variable Star Observers. Retrieved 10 March 2016.
- Percy, John R.; Wilson, Joseph B.; Henry, Gregory W. (2001). "Long-Term VRI Photometry of Small-Amplitude Red Variables. I. Light Curves and Periods". The Publications of the Astronomical Society of the Pacific. 113 (786): 983–96. Bibcode:2001PASP..113..983P. doi:10.1086/322153.
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