21306+4852
- Unique Name: 21306+4852OSO 148AC
- RA: 21 30 37.29
- Dec: +48 51 59.6
- Discoverer: OSO
- Discoverer Number: 148
- Components: AC
- First year: 1952
- Last year: 2003
- Observations: 4
- First position angle: 133
- Last position angle: 121
- First separation: 11.5
- Last separation: 21.6
- Mag first component: 10.67
- Mag second component: 16.0
- Spectral type: sd?G2
- Primary proper motion RA: -199
- Primary proper motion DEC: 53
- Secondary proper motion RA: 14
- Secondary proper motion DEC: -24
- Durchmusterung:
- Notes: N
