21089+1748
- Unique Name: 21089+1748HU 365
- RA: 21 08 55.52
- Dec: +17 47 49.9
- Discoverer: HU
- Discoverer Number: 365
- Components:
- First year: 1901
- Last year: 2009
- Observations: 6
- First position angle: 17
- Last position angle: 20
- First separation: 1.0
- Last separation: 1.0
- Mag first component: 9.26
- Mag second component: 11.69
- Spectral type: K5
- Primary proper motion RA: -10
- Primary proper motion DEC: -10
- Secondary proper motion RA: -14
- Secondary proper motion DEC: -6
- Durchmusterung: +17 4509
- Notes: