10303+6321
- Unique Name: 10303+6321ES 1905AB
- RA: 10 30 16.09
- Dec: +63 20 55.4
- Discoverer: ES
- Discoverer Number: 1905
- Components: AB
- First year: 1909
- Last year: 2003
- Observations: 4
- First position angle: 66
- Last position angle: 67
- First separation: 48.2
- Last separation: 42.4
- Mag first component: 7.4
- Mag second component: 11.6
- Spectral type: K0
- Primary proper motion RA: 27
- Primary proper motion DEC: 9
- Secondary proper motion RA: -22
- Secondary proper motion DEC: -32
- Durchmusterung: +64 788
- Notes:
