Page last updated Dec 24, 2015|
A magnitude 18(?) spiral galaxy (type SABb? pec) in Phoenix (RA 00 43 21.2, Dec -44 19 41)
Physical Information: Based on a recessional velocity of 38390 km/sec, a straightforward calculation indicates that PGC 108500 is about 1785 to 1790 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 1540 to 1545 million light years away at the time the light by which we see it was emitted, about 1640 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of about 0.25 by 0.2 arcmin, the galaxy is 110 to 115 thousand light years across.
Above, a 12 arcmin wide DSS image centered on PGC 108500
Below, a 0.6 arcmin wide DSS image of the galaxy