NGC 772, also known as Arp 78, is a magnitude 10.3 spiral galaxy in Aries. It is located about 130 million light-years away. One spiral arm of this galaxy is unusually strong. At least two supernovae have appeared in this galaxy: sn2003hl and sn2003iq. Each of these supernovae was a type II supernova. Both of them were visible during the same period of time. Sn2003hl was discovered on August 20, 2003,; amd sn2003iq was discovered on October 8, 2003. The relatively bright galaxy above and slightly right of center is NGC 770 (magnitude 13.0). NGC 770 is an elliptical galaxy that is a companion of NGC 772.
This image includes numerous faint galaxies in addition to NGC 772 and NGC 770. At about a 45 degree angle above and to the left of NGC 770 is PGC 212884 (magnitude 16.6). The dimmer galaxies in between NGC 770 and PGC 212884 are PGC 7509 (magnitude 17.6) and PGC 1575861 (magnitude 18.5). PGC 1577343 (magnitude 18.4) is the faint edge-on galaxy to the left of PGC 212884. The relatively bright galaxy below and to the right of NGC 772 is PGC 1577957 (magnitude 17.4). At least a thirty more faint galaxies are visible in this image.
This image is an LRGB color composite CCD image taken with an STL-11000M using a 24-inch RCOS telescope at the University of Arizona SkyCenter located on Mount Lemmon.
NGC 772 (Arp 78)
RA: 01h 59m 20s Dec: +19d 11' 27" (J2000)
November 21 & 22, 2009
Image by Sid Leach and Adam Block
Mount Lemmon, Arizona
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