21336+3905
- Unique Name: 21336+3905COU1975Aa,Ab
- RA: 21 33 39.09
- Dec: +39 04 57.2
- Discoverer: COU
- Discoverer Number: 1975
- Components: Aa,Ab
- First year: 1980
- Last year: 1995
- Observations: 3
- First position angle: 140
- Last position angle: 354
- First separation: 0.3
- Last separation: 0.2
- Mag first component: 11.2
- Mag second component: 11.2
- Spectral type:
- Primary proper motion RA: 14
- Primary proper motion DEC: 9
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +38 4531
- Notes: