 Artist's impression of KSw 71 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 14m 17.266s[1] |
| Declination | +42° 36′ 31.59″[1] |
| Characteristics | |
| Spectral type | K0-2 IV-III[2] |
| Details | |
| Mass | 0.8257[3] M☉ |
| Radius | 10.5[2] R☉ |
| Surface gravity (log g) | 4.38[3] cgs |
| Temperature | 4,967[3] K |
| Rotation | 5.22 days[2] |
| Rotational velocity (v sin i) | 98.6 – 116[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
KSw 71 is a rapidly-spinning star in the constellation of Lyra. It is thought to have formed after two stars in a close binary system merged; its rotation has deformed it into an oblate spheroid shape. KSw 71 was discovered, alongside other pumpkin-shaped stars by NASA's Kepler and Swift missions and produces X-rays at more than 100 times the peak levels ever seen from the Sun.[4]
18 "pumpkin stars" have been discovered,[5] including this one.
- ^ a b Cite error: The named reference
2masswas invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
howellwas invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
mcquillanwas invoked but never defined (see the help page). - ^ Cite error: The named reference
NASA1was invoked but never defined (see the help page). - ^ Viz, NASA (8 October 2018). "NASA Viz: Pumpkin Stars". svs.gsfc.nasa.gov. Retrieved 17 January 2021.