| Epoch: | J2000 |
| Constellation Name: | Canes Venatici |
| Ra: | 13h 58m 33s |
| Dec: | +37° 27’ 12” |
| Appmag B: | 13.7 |
| Absmag V: | 13.12 |
| Sbrightness: | 23.78 mag/arcsec^2 |
| Type: | SBb |
| Z: | 0.011501 |
| H Radial V: | 3,448 km/s |
| Dist Ly: | 175 Mly (53.67 Mpc) |
| Size: | 96,900 ly (29.7 kpc estimated) |
| Size V: | 1.9' x 1.3' |
| Names: | PGC 49739, UGC 8898, VV 48b, Arp 84, IRAS 13564+3741, MCG +06-31-033, CGCG 191-024 |
NGC 5394 is a barred spiral galaxy located in the constellation Canes Venatici. Its speed relative to the cosmic microwave background is 3,639 ± 14 km/s, which corresponds to a Hubble distance of 53.7 ± 3.8 Mpc (∼175 million ly).[1] NGC 5394 was discovered by German-British astronomer William Herschel in 1787.
The luminosity class of NGC 5394 is II and it has a broad HI line. It also contains regions of ionized hydrogen. It is also a Luminous Infrared Galaxy (LIRG).
To date, one non-redshift-based measurement gives a distance of approximately 32,900 Mpc (∼107 million ly).[2] This value is far outside the Hubble distance values. Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy.
One supernova has been observed in NGC 5394: SN 2020aaxs (type Ib, mag. 17).[3]
NGC 5394 and NGC 5395 are a pair of gravitationally interacting galaxies that appear in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 84.[4] Arp noted that NGC 5495 is a spiral with a high surface luminosity companion at the end of one of its arms.
According to A.M. Garcia, NGC 5394 is part of a group of galaxies that has at least five members, the NGC 5395 group. The other galaxies are NGC 5341, NGC 5351, NGC 5395 and UGC 8806.[5]