21590+5111
- Unique Name: 21590+5111ES 1108
- RA: 21 59 01.37
- Dec: +51 09 43.2
- Discoverer: ES
- Discoverer Number: 1108
- Components:
- First year: 1902
- Last year: 2003
- Observations: 5
- First position angle: 247
- Last position angle: 249
- First separation: 4.9
- Last separation: 6.8
- Mag first component: 10.66
- Mag second component: 12.2
- Spectral type:
- Primary proper motion RA: 3
- Primary proper motion DEC: -2
- Secondary proper motion RA: -35
- Secondary proper motion DEC: -2
- Durchmusterung: +50 3510
- Notes: