21103+1008
- Unique Name: 21103+1008STFA 54AD
- RA: 21 10 20.47
- Dec: +10 07 55.0
- Discoverer: STF
- Discoverer Number: 0
- Components: AD
- First year: 1835
- Last year: 2011
- Observations: 25
- First position angle: 153
- Last position angle: 152
- First separation: 366.0
- Last separation: 335.8
- Mag first component: 4.7
- Mag second component: 6.06
- Spectral type: A9V
- Primary proper motion RA: 49
- Primary proper motion DEC: -152
- Secondary proper motion RA: -1
- Secondary proper motion DEC: 16
- Durchmusterung: +09 4735
- Notes: N
