21501+3151
- Unique Name: 21501+3151BU 692AC
- RA: 21 50 05.37
- Dec: +31 50 52.4
- Discoverer: BU
- Discoverer Number: 692
- Components: AC
- First year: 1878
- Last year: 2007
- Observations: 8
- First position angle: 299
- Last position angle: 293
- First separation: 36.9
- Last separation: 40.7
- Mag first component: 7.47
- Mag second component: 12.63
- Spectral type: K0
- Primary proper motion RA: 39
- Primary proper motion DEC: 5
- Secondary proper motion RA: -6
- Secondary proper motion DEC: -8
- Durchmusterung:
- Notes: