21536+3551
- Unique Name: 21536+3551OSO 159AB
- RA: 21 53 34.79
- Dec: +35 50 54.3
- Discoverer: OSO
- Discoverer Number: 159
- Components: AB
- First year: 1994
- Last year: 1999
- Observations: 2
- First position angle: 24
- Last position angle: 28
- First separation: 14.1
- Last separation: 14.7
- Mag first component: 9.13
- Mag second component: 17.1
- Spectral type:
- Primary proper motion RA: -113
- Primary proper motion DEC: 139
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +35 4669
- Notes: N
