Celestial Atlas
PGC 63500 - 63999 ←     PGC Objects: PGC 64000 - 64499 Link for sharing this page on Facebook     → PGC 64500 - 64999
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Page last updated May 3, 2014

PGC 64456 (usually (mis?)identified as
IC 4991)
A magnitude 12(?) lenticular galaxy (type SA0?) in Sagittarius (RA 20 18 23.3, Dec -41 03 01)
Given its usually (mis?)identification, see IC 4991 for anything else

PGC 64456
A magnitude 14(?) lenticular galaxy (type SB0(rs)a?) in
Sagittarius (RA 20 18 37.6, Dec -41 03 17)
Based on a recessional velocity of 5885 km/sec, PGC 64456 is about 275 million light years away. Given that and its apparent size of about 1.05 by 0.9 arcmin, it is about 85 thousand light years across. The galaxy to its west (PGC 64450) has a similar recessional velocity (5650 km/sec), so the two are probably at a similar distance from us (their Hubble distances differ by only 10 million light years), and might be physical companions in the same sense as our galaxy and the Andromeda Galaxy; but they can't be as close to each other as they appear, as substantial gravitational interaction and physical distortion would accompany such a small separation.
DSS image of lenticular galaxy PGC 64456
Above, a 1.3 arcmin wide DSS image of PGC 64456; see IC 4991 for a wider-field view
Celestial Atlas
PGC 63500 - 63999 ←     PGC Objects: PGC 64000 - 64499     → PGC 64500 - 64999