| Type | Galaxy |
|---|---|
| Magnitude | 13.4 |
| Size | 0.987' x 0.493' @ 160° |
| Right Ascension | 9h 53' 5.0" (2000) |
| Declination | 19° 25' 56" N |
| Constellation | Leo |
| Description | vF, vS, bM, r |
| Classification | S0o |
Harold Corwin
NGC 3040 is a triple system, though Stephan only measured and described the brightest. Holmberg has the brightest two in his catalogue of double galaxies from 1937, though does not note the NGC number. His number is Ho. 148 for the pair; Ho. 148a is NGC 3040.
| 20 Leonis | IC 582 | IC 583 |
| MCG+03-25-038 | PGC 1591421 | PGC 200252 |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page