For ease, lets just refer to the star as SDSS. The star is an example of a Hypervelocity Stars. Hypervelocity stars are stars that move faster than other stars. SDSS is a star that has been found to be moving out of the milky way after a close interaction with Sagittarius A*. One day, the star will eventually leave the confines of our solar system and float free in intergalactic space. I.O.P. Once the star has been ejected, it will be known as a Rogue Star.
The star was possibly a multiple star system that got close to the Galactic Centre, the companion stars were grabbed and consumed by the Supermassive black hole and it being the survivor was sent on its way out.
The location of the star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For SDSS J090745.0+024507, the location is 09h 07m 44.995 and +02° 45` 06.90 .
SDSS J090745.0+024507 has a spectral type of B E. This means the star is a blue star.
|Primary / Proper / Traditional Name||SDSS J090745.0+024507|
|Spectral Type||B E|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Right Ascension (R.A.)||09h 07m 44.995|
|Declination (Dec.)||+02° 45` 06.90|
|Radial Velocity||831.20 km/s|
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