Celestial Atlas
PGC 24000 - 24499 ←     PGC Objects: PGC 24500 - 24999 Link for sharing this page on Facebook     → PGC 25000 - 25499
Click here for Introductory Material
Page last updated Jul 20, 2012

PGC 24755 (=
IC 2411 and "NGC 2667B", but not = Arp 7)
Not an NGC object but sometimes called NGC 2667B due to its proximity to NGC 2667
A 15th-magnitude spiral galaxy (type Sab?) in Cancer (RA 08 48 30.2, Dec +19 02 38)

Apparent size 0.9 by 0.3 arcmin. The galaxy's proper designation is IC 2411, but as noted above, it is sometimes incorrectly called NGC 2667B. If searched for by its IC designation, Wikisky shows the correct galaxy, but incorrectly labels it as NGC 2667. LEDA correctly shows it as IC 2411 (and as "NGC 2667B"), but incorrectly lists it as Arp 7.


PGC 24836 (=
Arp 7)
A 13th-magnitude spiral galaxy (type SB(rs)bc) in Hydra (RA 08 50 20.2, Dec -16 34 46)

Based on a recessional velocity of 5505 km/sec, PGC 24836 is about 255 million light years away. (NED also lists a redshift-independent distance estimate of 19 million light years, which must refer to another object, as it would make the galaxy impossibly small.) Given that and its apparent size of 1.3 by 1.0 arcmin, it is about 95 thousand light years across. The galaxy is the first of six chosen by Halton Arp for his Atlas of Peculiar Galaxies as an example of spiral galaxies with split arms, hence its designation as Arp 7. (Note: LEDA incorrectly lists PGC 24755 as Arp 7.)

DSS image of spiral galaxy PGC 24836, also known as Arp 7
Above, a 2.4 arcmin wide closeup of PGC 24836
Below, a 12 arcmin wide region centered on the galaxy
DSS image of region near spiral galaxy PGC 24836, also known as Arp 7

PGC 24945
Listed in NED as SDSSJ085306.26+332242.8
A 17th-(B)magnitude galaxy (type S?) in
Lynx (RA 08 53 06, Dec +33 22 43)

Based on recessional velocity of 25845 km/sec, about 1150 million light years away. Given that and its apparent size of 0.35 by 0.3 arcmin, about 120 thousand light years across

Wikisky SDSS image of PGC 24945
Above, a 2.4 arcmin wide view of PGC 24945; also see the wide-field view of NGC 2683
Celestial Atlas
PGC 24000 - 24499 ←     PGC Objects: PGC 24500 - 24999     → PGC 25000 - 25499