21336+3905
- Unique Name: 21336+3905COU1975AB
- RA: 21 33 39.09
- Dec: +39 04 57.2
- Discoverer: COU
- Discoverer Number: 1975
- Components: AB
- First year: 1980
- Last year: 2002
- Observations: 4
- First position angle: 1
- Last position angle: 0
- First separation: 17.0
- Last separation: 21.6
- Mag first component: 10.49
- Mag second component: 11.06
- Spectral type:
- Primary proper motion RA: 20
- Primary proper motion DEC: 8
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -4
- Durchmusterung:
- Notes: