21593+3516
- Unique Name: 21593+3516COU1340
- RA: 21 59 15.43
- Dec: +35 15 34.6
- Discoverer: COU
- Discoverer Number: 1340
- Components:
- First year: 1975
- Last year: 2009
- Observations: 9
- First position angle: 164
- Last position angle: 190
- First separation: 0.2
- Last separation: 0.2
- Mag first component: 9.8
- Mag second component: 10.0
- Spectral type: A3
- Primary proper motion RA: 12
- Primary proper motion DEC: -12
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +34 4579
- Notes: