Celestial Atlas
PGC 126000 - 126499 ←PGC Objects: 126500 - 126999 Link for sharing this page on Facebook→ PGC 127000 - 127499
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Page last updated Feb 2, 2019
(Need to check magnitude of PGC 126500)

PGC 126500 (= PGC 189317)
A magnitude 16.5(?) spiral galaxy (type Sc?) in
Grus (RA 21 39 21.4, Dec -41 56 02)
Physical Information: Based on a recessional velocity of 18835 km/sec (and H0 = 70 km/sec/Mpc), a straightforward calculation indicates that PGC 126500 is about 875 to 880 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 815 million light years away at the time the light by which we see it was emitted, about 845 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 (from the images below), the galaxy is about 60 thousand light years across.
DSS image of region near spiral galaxy PGC 126500
Above, a 12 arcmin wide DSS image centered on PGC 126500
Below, a 0.6 arcmin wide DSS image of the galaxy
DSS image of spiral galaxy PGC 126500

PGC 126501

PGC 126502

PGC 126503

PGC 126504

PGC 126505

PGC 126506

PGC 126507

PGC 126508

PGC 126509

PGC 126762
A magnitude 17(?) lenticular galaxy (type (R)SB0/a?) in
Coma Berenices (RA 13 00 13.6, Dec +27 52 02)
Physical Information: Based on a recessional velocity of 7450 km/sec (and H0 = 70 km/sec/Mpc), a straightforward calculation indicates that PGC 126762 is about 345 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 335 million light years away at the time the light by which we see it was emitted, about 340 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 0.4 by 0.4 arcmin (from the images below), the galaxy is about 35 to 40 thousand light years across. Since the Coma Cluster is about 320 million light years away, PGC 126762 is almost certainly a member of the cluster.
SDSS image of region near PGC 126762, also showing NGC 4898 and NGC 4906
Above, a 12 arcmin wide SDSS image centered on PGC 126762, also showing NGC 4898 and 4906
Below, a 1.8 arcmin wide SDSS image of the galaxy and three of its nearest neighbors
(PGC 44709, PGC 44716 and "PGC 4628454"
SDSS image showing lenticular galaxy PGC 126762, also showing PGC 44709, PGC 44716 and 'PGC 4628454'
Below, a 1.75 by 1.25 arcmin wide HST image of the region (Image Credit ESA/Hubble & NASA, Cramer et al.)
Also shown, in false-color, is the gas torn from PGC 44716 by ram-pressure stripping
(Note: The HST press release understates the apparent size of the region)
HST image showing lenticular galaxy PGC 126762, also showing PGC 44709, PGC 44716 and 'PGC 4628454'
Below, a 0.75 arcmin wide HST image of the galaxy (Image Credit as above)
HST image of lenticular galaxy PGC 126762
Celestial Atlas
PGC 126000 - 126499 ←PGC Objects: 126500 - 126999→ PGC 127000 - 127499