NGC 3521
 
NGC 3521 is a mixed 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 3521:
| NGC: | NGC 3521 | 
| Type: | galaxy | 
| Galaxy type: | mixed spiral | 
| Galaxy morph class: | SABb | 
| Constellation: | Leo | 
| Surface brightness: | 22.7 mag/arcsec2 | 
| V-mag (visual): | 9.11 | 
| B-mag (blue): | 9.9 | 
| J-mag (IR): | 6.74 | 
| H-mag (IR): | |
| K-mag (IR): | 6.03 | 
| Right Ascension: | 11:05:48.58 | 
| Declination: | -00:02:09.10 | 
| Major axis: | 8.32 ' | 
| Minor axis: | 4.47 ' | 
| Angle (major axis): | 162° | 
| Radial velocity: | 797 km/s | 
| Redshift: | 0.002663 | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS