21175+1221
- Unique Name: 21175+1221HJ 279AB
- RA: 21 17 40.60
- Dec: +12 20 34.1
- Discoverer: HJ
- Discoverer Number: 279
- Components: AB
- First year: 1825
- Last year: 2004
- Observations: 6
- First position angle: 295
- Last position angle: 293
- First separation: 3.0
- Last separation: 5.4
- Mag first component: 11.49
- Mag second component: 11.5
- Spectral type:
- Primary proper motion RA: 39
- Primary proper motion DEC: -23
- Secondary proper motion RA: -21
- Secondary proper motion DEC: -5
- Durchmusterung:
- Notes: N
