21288+4809
- Unique Name: 21288+4809HJ 1651
- RA: 21 28 52.84
- Dec: +48 09 33.4
- Discoverer: HJ
- Discoverer Number: 1651
- Components:
- First year: 1828
- Last year: 2011
- Observations: 6
- First position angle: 328
- Last position angle: 333
- First separation: 9.0
- Last separation: 11.9
- Mag first component: 10.48
- Mag second component: 10.4
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: -9
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -4
- Durchmusterung: +47 3424
- Notes: