21310+2128
- Unique Name: 21310+2128COU 232
- RA: 21 30 59.75
- Dec: +21 28 13.3
- Discoverer: COU
- Discoverer Number: 232
- Components:
- First year: 1967
- Last year: 2008
- Observations: 7
- First position angle: 34
- Last position angle: 34
- First separation: 0.5
- Last separation: 0.6
- Mag first component: 11.4
- Mag second component: 11.5
- Spectral type:
- Primary proper motion RA: 3
- Primary proper motion DEC: -1
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +20 4944
- Notes: