21431+4122
- Unique Name: 21431+4122COU1978
- RA: 21 43 08.46
- Dec: +41 22 15.3
- Discoverer: COU
- Discoverer Number: 1978
- Components:
- First year: 1981
- Last year: 2008
- Observations: 3
- First position angle: 106
- Last position angle: 82
- First separation: 0.2
- Last separation: 0.2
- Mag first component: 10.6
- Mag second component: 10.6
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: -3
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +40 4624
- Notes: