21101+5715
- Unique Name: 21101+5715STI2561
- RA: 21 10 04.23
- Dec: +57 14 39.7
- Discoverer: STI
- Discoverer Number: 2561
- Components:
- First year: 1917
- Last year: 2012
- Observations: 8
- First position angle: 182
- Last position angle: 183
- First separation: 14.4
- Last separation: 14.4
- Mag first component: 11.85
- Mag second component: 13.1
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -4
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -1
- Durchmusterung:
- Notes: