21008-0821
- Unique Name: 21008-0821BU 678AB
- RA: 21 00 48.88
- Dec: -08 20 34.6
- Discoverer: BU
- Discoverer Number: 678
- Components: AB
- First year: 1877
- Last year: 2012
- Observations: 23
- First position angle: 182
- Last position angle: 258
- First separation: 2.2
- Last separation: 2.7
- Mag first component: 8.2
- Mag second component: 11.26
- Spectral type: G0
- Primary proper motion RA: 239
- Primary proper motion DEC: 32
- Secondary proper motion RA: 239
- Secondary proper motion DEC: 27
- Durchmusterung: -08 5544
- Notes: O