02309+5311
- Unique Name: 02309+5311HJ 2139AB
- RA: 02 30 52.93
- Dec: +53 10 19.0
- Discoverer: HJ
- Discoverer Number: 2139
- Components: AB
- First year: 1900
- Last year: 2012
- Observations: 27
- First position angle: 302
- Last position angle: 297
- First separation: 3.3
- Last separation: 3.8
- Mag first component: 8.85
- Mag second component: 9.15
- Spectral type: F5
- Primary proper motion RA: 16
- Primary proper motion DEC: 8
- Secondary proper motion RA: 4
- Secondary proper motion DEC: 12
- Durchmusterung: +52 590
- Notes: D
