21299+5256
- Unique Name: 21299+5256GUI 35AC
- RA: 21 29 52.95
- Dec: +52 56 01.8
- Discoverer: GUI
- Discoverer Number: 35
- Components: AC
- First year: 1898
- Last year: 2012
- Observations: 11
- First position angle: 0
- Last position angle: 2
- First separation: 85.9
- Last separation: 87.4
- Mag first component: 7.24
- Mag second component: 9.99
- Spectral type: B9.5IV-V
- Primary proper motion RA: 6
- Primary proper motion DEC: 4
- Secondary proper motion RA: 33
- Secondary proper motion DEC: 14
- Durchmusterung:
- Notes: N
