20100+1021
- Unique Name: 20100+1021A 1199AB
- RA: 20 09 59.56
- Dec: +10 20 59.0
- Discoverer: A
- Discoverer Number: 1199
- Components: AB
- First year: 1905
- Last year: 2012
- Observations: 20
- First position angle: 241
- Last position angle: 244
- First separation: 2.8
- Last separation: 2.9
- Mag first component: 9.14
- Mag second component: 11.4
- Spectral type: A0V
- Primary proper motion RA: -2
- Primary proper motion DEC: -2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +09 4425
- Notes: N D
