21223+3139
- Unique Name: 21223+3139ES 377AB
- RA: 21 22 21.62
- Dec: +31 38 43.9
- Discoverer: ES
- Discoverer Number: 377
- Components: AB
- First year: 1893
- Last year: 2012
- Observations: 10
- First position angle: 292
- Last position angle: 291
- First separation: 48.2
- Last separation: 48.7
- Mag first component: 11.05
- Mag second component: 11.82
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -11
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -13
- Durchmusterung: +31 4430
- Notes:
