21089+0013
- Unique Name: 21089+0013BU 837
- RA: 21 08 52.87
- Dec: +00 12 53.5
- Discoverer: BU
- Discoverer Number: 837
- Components:
- First year: 1881
- Last year: 2001
- Observations: 17
- First position angle: 190
- Last position angle: 184
- First separation: 3.7
- Last separation: 3.2
- Mag first component: 9.03
- Mag second component: 10.97
- Spectral type: G5
- Primary proper motion RA: 107
- Primary proper motion DEC: -38
- Secondary proper motion RA: 108
- Secondary proper motion DEC: -51
- Durchmusterung: -00 4170
- Notes: