NGC 3509
 
NGC 3509 is a spiral galaxy located in the constellation of Leo. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 3509:
| NGC: | NGC 3509 | 
| Type: | galaxy | 
| Galaxy type: | spiral | 
| Galaxy morph class: | Sbc | 
| Constellation: | Leo | 
| Surface brightness: | 23.4 mag/arcsec2 | 
| B-mag (blue): | 14.1 | 
| J-mag (IR): | 11.4 | 
| H-mag (IR): | |
| K-mag (IR): | 10.7 | 
| Right Ascension: | 11:04:23.55 | 
| Declination: | 04:49:43.00 | 
| Major axis: | 1.93 ' | 
| Minor axis: | 0.51 ' | 
| Angle (major axis): | 37° | 
| Radial velocity: | 7574 km/s | 
| Redshift: | 0.02559 | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS