21251+0923
- Unique Name: 21251+0923BU 164AB
- RA: 21 25 05.66
- Dec: +09 23 02.6
- Discoverer: BU
- Discoverer Number: 164
- Components: AB
- First year: 1873
- Last year: 2008
- Observations: 68
- First position angle: 255
- Last position angle: 139
- First separation: 0.7
- Last separation: 0.1
- Mag first component: 8.17
- Mag second component: 8.3
- Spectral type: A5IV-V
- Primary proper motion RA: 23
- Primary proper motion DEC: 6
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +08 4671
- Notes: NO
