21559+1536
- Unique Name: 21559+1536BAT 1AB
- RA: 21 55 53.52
- Dec: +15 36 17.6
- Discoverer: BAT
- Discoverer Number: 1
- Components: AB
- First year: 1903
- Last year: 1998
- Observations: 15
- First position angle: 161
- Last position angle: 156
- First separation: 1.5
- Last separation: 1.1
- Mag first component: 10.07
- Mag second component: 10.17
- Spectral type: G5
- Primary proper motion RA: 140
- Primary proper motion DEC: -129
- Secondary proper motion RA: 140
- Secondary proper motion DEC: -129
- Durchmusterung: +14 4697
- Notes: