
This star is the second nearest to our Solar System at 5.97 light years, only triple star Alpha Centauri is closer. From this distance, it follows that the fast apparent motion corresponds to an unusually high velocity. In addition, this star is approaching us rapidly at 87 miles per second, so that the combination of both indicates a space velocity of of about 103 miles per second. According to Burnham, the star will reach a minimum distance of less then 4 light years in about 8,000 years, when its proper motion will have reached 25 arc seconds per year and its brightness will be about magnitude 8.6.
The above Palomar Observatory Sky Survey photo shows its position in 1950. Have a look at the page at SEDS for more information.
Copyright 1997 Dr. Sten Odenwald
Return to Ask the Astronomer.