21077+4851
- Unique Name: 21077+4851ES 818BC
- RA: 21 07 43.23
- Dec: +48 51 55.4
- Discoverer: ES
- Discoverer Number: 818
- Components: BC
- First year: 1909
- Last year: 2000
- Observations: 2
- First position angle: 81
- Last position angle: 133
- First separation: 2.4
- Last separation: 2.2
- Mag first component: 11.0
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: -10
- Primary proper motion DEC: 14
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes:
