02309+5311
- Unique Name: 02309+5311HJ 2139AC
- RA: 02 30 52.93
- Dec: +53 10 19.0
- Discoverer: HJ
- Discoverer Number: 2139
- Components: AC
- First year: 1900
- Last year: 2006
- Observations: 10
- First position angle: 7
- Last position angle: 8
- First separation: 20.4
- Last separation: 18.2
- Mag first component: 8.85
- Mag second component: 10.4
- Spectral type: F5
- Primary proper motion RA: 16
- Primary proper motion DEC: 8
- Secondary proper motion RA: 9
- Secondary proper motion DEC: 2
- Durchmusterung:
- Notes: