21125+2619
- Unique Name: 21125+2619STF2774AB
- RA: 21 12 29.72
- Dec: +26 18 45.6
- Discoverer: STF
- Discoverer Number: 2774
- Components: AB
- First year: 1897
- Last year: 2011
- Observations: 8
- First position angle: 336
- Last position angle: 335
- First separation: 28.5
- Last separation: 27.8
- Mag first component: 8.55
- Mag second component: 12.16
- Spectral type: A2
- Primary proper motion RA: -3
- Primary proper motion DEC: -1
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -8
- Durchmusterung: +25 4484
- Notes: