21583+3516
- Unique Name: 21583+3516SEI1547
- RA: 21 58 20.94
- Dec: +35 15 26.1
- Discoverer: SEI
- Discoverer Number: 1547
- Components:
- First year: 1894
- Last year: 2007
- Observations: 9
- First position angle: 60
- Last position angle: 58
- First separation: 26.0
- Last separation: 26.5
- Mag first component: 10.01
- Mag second component: 11.26
- Spectral type:
- Primary proper motion RA: 3
- Primary proper motion DEC: -2
- Secondary proper motion RA: -2
- Secondary proper motion DEC: 4
- Durchmusterung: +34 4577
- Notes: