21125+2821
- Unique Name: 21125+2821HO 152
- RA: 21 12 31.11
- Dec: +28 20 39.1
- Discoverer: HO
- Discoverer Number: 152
- Components:
- First year: 1882
- Last year: 2010
- Observations: 67
- First position angle: 320
- Last position angle: 135
- First separation: 0.5
- Last separation: 0.2
- Mag first component: 8.87
- Mag second component: 9.39
- Spectral type: F8
- Primary proper motion RA: 34
- Primary proper motion DEC: -17
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +27 4003
- Notes: NO
