Celestial Atlas
PGC 105000 - 105499 ←     PGC Objects: 105500 - 105999 Link for sharing this page on Facebook     → PGC 106000 - 106499
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Page last updated Dec 24, 2015

PGC 105500
A magnitude 17(?) spiral galaxy (type Sa? pec?) in
Virgo (RA 13 58 36.4, Dec -11 59 38)
Physical Information: Based on a recessional velocity of 20740 km/sec, a straightforward calculation indicates that PGC 105500 is about 965 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 890 million light years away at the time the light by which we see it was emitted, about 920 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 0.3 by 0.15 arcmin, the galaxy is 75 to 80 thousand light years across.
DSS image of region near spiral galaxy PGC 105500
Above, a 12 arcmin wide DSS image centered on PGC 105500
The "bright" star (HD121865) is 7th magnitude
Below, a 0.6 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy PGC 105500

PGC 105501

PGC 105502

PGC 105503

PGC 105504

PGC 105505

PGC 105506

PGC 105507

PGC 105508

PGC 105509
Celestial Atlas
PGC 105000 - 105499 ←     PGC Objects: 105500 - 105999     → PGC 106000 - 106499