21103+4359
- Unique Name: 21103+4359STF2773EF
- RA: 21 10 16.48
- Dec: +43 59 07.0
- Discoverer: STF
- Discoverer Number: 2773
- Components: EF
- First year: 1909
- Last year: 2000
- Observations: 3
- First position angle: 56
- Last position angle: 42
- First separation: 11.0
- Last separation: 10.8
- Mag first component: 8.46
- Mag second component: 0.0
- Spectral type: A0
- Primary proper motion RA: 6
- Primary proper motion DEC: -2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: