21290+1100
- Unique Name: 21290+1100GRV 470
- RA: 21 29 03.05
- Dec: +11 00 33.3
- Discoverer: GRV
- Discoverer Number: 470
- Components:
- First year: 1907
- Last year: 2001
- Observations: 6
- First position angle: 317
- Last position angle: 317
- First separation: 53.3
- Last separation: 53.9
- Mag first component: 10.03
- Mag second component: 13.07
- Spectral type:
- Primary proper motion RA: 18
- Primary proper motion DEC: -17
- Secondary proper motion RA: 18
- Secondary proper motion DEC: -11
- Durchmusterung: +10 4555
- Notes: