21102+3726
- Unique Name: 21102+3726HU 1309AB
- RA: 21 10 10.16
- Dec: +37 25 46.7
- Discoverer: HU
- Discoverer Number: 1309
- Components: AB
- First year: 1905
- Last year: 2011
- Observations: 9
- First position angle: 172
- Last position angle: 171
- First separation: 2.9
- Last separation: 2.9
- Mag first component: 10.3
- Mag second component: 11.3
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: -15
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +36 4442
- Notes: