21340+3844
- Unique Name: 21340+3844COU1976
- RA: 21 33 59.89
- Dec: +38 43 10.0
- Discoverer: COU
- Discoverer Number: 1976
- Components:
- First year: 1980
- Last year: 2007
- Observations: 5
- First position angle: 41
- Last position angle: 31
- First separation: 0.4
- Last separation: 0.4
- Mag first component: 10.0
- Mag second component: 10.1
- Spectral type:
- Primary proper motion RA: 16
- Primary proper motion DEC: 11
- Secondary proper motion RA: 16
- Secondary proper motion DEC: 11
- Durchmusterung: +38 4533
- Notes: