00231+5210
- Unique Name: 00231+5210ES 866
- RA: 00 23 03.31
- Dec: +52 10 20.0
- Discoverer: ES
- Discoverer Number: 866
- Components:
- First year: 1910
- Last year: 2002
- Observations: 4
- First position angle: 87
- Last position angle: 83
- First separation: 9.0
- Last separation: 9.2
- Mag first component: 9.0
- Mag second component: 12.7
- Spectral type: B5
- Primary proper motion RA: -3
- Primary proper motion DEC: -2
- Secondary proper motion RA: 16
- Secondary proper motion DEC: 3
- Durchmusterung: +51 58
- Notes: