21285+8700
- Unique Name: 21285+8700HDS3057
- RA: 21 28 32.54
- Dec: +87 00 06.2
- Discoverer: HDS
- Discoverer Number: 3057
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 278
- Last position angle: 278
- First separation: 0.4
- Last separation: 0.4
- Mag first component: 8.51
- Mag second component: 11.96
- Spectral type: A2
- Primary proper motion RA: 14
- Primary proper motion DEC: 17
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +86 324
- Notes: