20312+0513
- Unique Name: 20312+0513AG 257
- RA: 20 31 13.51
- Dec: +05 13 08.7
- Discoverer: AG
- Discoverer Number: 257
- Components:
- First year: 1902
- Last year: 2009
- Observations: 44
- First position angle: 55
- Last position angle: 73
- First separation: 1.6
- Last separation: 1.7
- Mag first component: 9.49
- Mag second component: 9.77
- Spectral type: K0
- Primary proper motion RA: 303
- Primary proper motion DEC: 275
- Secondary proper motion RA: 303
- Secondary proper motion DEC: 275
- Durchmusterung: +04 4470
- Notes: NO
