US 708

US 708

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
Distance60,300 ± 8,500 ly
(18,500 ± 2,600[2] pc)
Details[2]
Surface gravity (log g)5.23 ± 0.12 cgs
Temperature44561 ± 675 K
Other designations
SDSS J093320.86+441705.4
Database references
SIMBADdata

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]

  1. ^ a b c d "US 708". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 November 2016.
  2. ^ 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.
  3. ^ Cite error: The named reference Science2015-03-06 was invoked but never defined (see the help page).
  4. ^ Eric Mack (2015-03-08). "'Shrapnel' Star Sets Milky Way Speed Record". Forbes magazine. Retrieved March 11, 2015.
  5. ^ Cite error: The named reference Astronomy2015-03-09 was invoked but never defined (see the help page).