 Artist's concept of US 708 (the blue star on the left) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 09h 33m 20.865s[1] |
| Declination | +44° 17′ 05.52″[1] |
| Apparent magnitude (V) | 18.8[1] |
| Characteristics | |
| Spectral type | sdOHe[1] |
| Astrometry | |
| Radial velocity (Rv) | 708.0 ± 15.0[2] km/s |
| Proper motion (μ) | RA: −7.33 ± 0.58[2] mas/yr Dec.: 2.28 ± 0.55[2] mas/yr |
| Distance | 60,300 ± 8,500 ly (18,500 ± 2,600[2] pc) |
| Details[2] | |
| Surface gravity (log g) | 5.23 ± 0.12 cgs |
| Temperature | 44561 ± 675 K |
| Other designations | |
SDSS J093320.86+441705.4 | |
| Database references | |
| SIMBAD | data |
US 708 is a hyper-velocity class O subdwarf in Ursa Major, in the halo of the Milky Way Galaxy. One of the fastest-moving stars in the galaxy, the star was first surveyed in 1982.[3][4][5]
- ^ a b c d "US 708". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 November 2016.
- ^ a b c d e Brown, Warren R.; Anderson, Jay; Gnedin, Oleg Y.; Bond, Howard E.; Geller, Margaret J.; Kenyon, Scott J. (2015). "Proper Motions and Trajectories for 16 Extreme Runaway and Hypervelocity Stars". The Astrophysical Journal. 804 (1): 49. arXiv:1502.05069. Bibcode:2015ApJ...804...49B. doi:10.1088/0004-637X/804/1/49. S2CID 15799814.
- ^ Cite error: The named reference
Science2015-03-06was invoked but never defined (see the help page). - ^ Eric Mack (2015-03-08). "'Shrapnel' Star Sets Milky Way Speed Record". Forbes magazine. Retrieved March 11, 2015.
- ^ Cite error: The named reference
Astronomy2015-03-09was invoked but never defined (see the help page).