VY Pyxidis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pyxis |
| Right ascension | 08h 54m 29.63102s [1] |
| Declination | −23° 31′ 18.5775″ [1] |
| Apparent magnitude (V) | 7.13 - 7.40[2] |
| Characteristics | |
| Evolutionary stage | Type II Cepheid |
| Spectral type | F4III[1] |
| Astrometry | |
| Proper motion (μ) | RA: 11.67 ± 0.33[3] mas/yr Dec.: 29.33 ± 0.35[3] mas/yr |
| Parallax (π) | 5.01 ± 0.44[3] mas |
| Distance | 650 ± 60 ly (200 ± 20 pc) |
| Other designations | |
VY Pyxidis is a BL Herculis variable (type II Cepheid) in the constellation of Pyxis.[1] It ranges between apparent magnitudes 7.13 and 7.40 over a period of 1.23995 days.[2] Located around 650 light-years distant, it shines with a luminosity approximately 45 times that of the Sun and has a surface temperature of 5892 K.[4]
References
- 1 2 3 4 SIMBAD, VY Pyxidis (accessed 13 July 2014)
- 1 2 Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 July 2014.
- 1 2 3 van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. 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.
This article is issued from Wikipedia - version of the 8/1/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.