NGC 7393 is a barred spiral galaxy in the constellation Aquarius. It is estimated to about 120 million light-years from the Milky Way and about 70,000 light-years in diameter.[1] NGC 7393 belongs to the class of spiral galaxies with separated sections in the Arp catalog. Astronomer Halton Arp divided his catalog of unusual galaxies into groups based on purely morphological criteria.[2] NGC 7393 was discovered by astronomer William Herschel on October 5, 1785.
| NGC 7393 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Aquarius |
| Right ascension | 22h 51m 38.1s[1] |
| Declination | −05° 33′ 26″[1] |
| Redshift | 0.012522 ± 0.000017[1] |
| Heliocentric radial velocity | 3754 ± 5 km/s[1] |
| Apparent magnitude (B) | 13.4[1] |
| Surface brightness | 22.84 mag/arcsec2 |
| Characteristics | |
| Type | SB(rs)c pec[1] |
| Apparent size (V) | 1.9′ × 0.9′[1] |
| Other designations | |
| VV 68, Arp 15, MCG -01-58-002, PGC 69874 | |
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