21242+1237
- Unique Name: 21242+1237HJ 282AB
- RA: 21 24 12.28
- Dec: +12 36 58.9
- Discoverer: HJ
- Discoverer Number: 282
- Components: AB
- First year: 1825
- Last year: 2013
- Observations: 6
- First position angle: 60
- Last position angle: 71
- First separation: 12.5
- Last separation: 27.5
- Mag first component: 8.73
- Mag second component: 13.1
- Spectral type: K0
- Primary proper motion RA: -25
- Primary proper motion DEC: -23
- Secondary proper motion RA: 24
- Secondary proper motion DEC: 3
- Durchmusterung: +12 4620
- Notes:
