21456+0251
- Unique Name: 21456+0251BAL2056
- RA: 21 45 34.97
- Dec: +02 51 18.4
- Discoverer: BAL
- Discoverer Number: 2056
- Components:
- First year: 1909
- Last year: 2010
- Observations: 5
- First position angle: 268
- Last position angle: 269
- First separation: 7.9
- Last separation: 7.9
- Mag first component: 9.9
- Mag second component: 10.6
- Spectral type: F8
- Primary proper motion RA: 9
- Primary proper motion DEC: 1
- Secondary proper motion RA: -14
- Secondary proper motion DEC: -6
- Durchmusterung: +02 4408
- Notes: