The sky around Arp 193 at true scale, north up and east left, with stars to magnitude 8. The circles show the field of a low-power eyepiece and of 10×50 binoculars.
Arp 193 is an irregular galaxy (Sm) in Canes Venatici, 322 million light-years away
Arp 193 (IC 883, UGC 8387, PGC 46560, VV 821) is an irregular galaxy (Sm) in the constellation Canes Venatici, 322 million light-years away. It shines at magnitude 13.8 and spans 48″ × 30″ of sky, about 74,900 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in May.
Galaxy: a system of billions of stars, gas and dust held together by gravity, far outside the Milky Way. Spiral galaxies have a disk with arms; elliptical galaxies are smooth, round or oval swarms of older stars.
Arp 193 is one of Arp's galaxies with narrow filaments
Halton Arp photographed it for his Atlas of Peculiar Galaxies (1966) as field Arp 193. It is in his group of neither spiral nor elliptical, Arp 146 to 268, under the category Galaxies with narrow filaments.
Arp 193 lies 6.5° southeast of Cor Caroli, the magnitude 2.9 star. Three fingers held at arm's length cover about 5°.
Arp 193 is highest in the evening in May
The chart gives its height above the horizon at 9 pm through the year, from 60°N to 40°S. It can be seen from the whole northern hemisphere and south to about 56°S, and never sets north of 56°N.
Arp 193 is 322 million light-years away
The light seen from Arp 193 tonight left it about 322 million years ago, long before modern humans existed. It ranks 360 of 422 by distance among the galaxies on Go Astronomy. Distance source: Hubble flow, z=0.0231, comoving distance (H0=70, Om=0.3).
