12308+3640
- Unique Name: 12308+3640J 1023
- RA: 12 30 46.44
- Dec: +36 39 34.5
- Discoverer: J
- Discoverer Number: 1023
- Components:
- First year: 1911
- Last year: 2012
- Observations: 17
- First position angle: 172
- Last position angle: 172
- First separation: 4.2
- Last separation: 5.2
- Mag first component: 11.1
- Mag second component: 11.3
- Spectral type: G0
- Primary proper motion RA: -105
- Primary proper motion DEC: 20
- Secondary proper motion RA: -99
- Secondary proper motion DEC: -124
- Durchmusterung: +37 2286
- Notes: