21396+4712
- Unique Name: 21396+4712HJ 1676
- RA: 21 39 37.86
- Dec: +47 12 02.6
- Discoverer: HJ
- Discoverer Number: 1676
- Components:
- First year: 1828
- Last year: 2003
- Observations: 15
- First position angle: 136
- Last position angle: 136
- First separation: 20.0
- Last separation: 29.5
- Mag first component: 7.75
- Mag second component: 11.01
- Spectral type: K0
- Primary proper motion RA: 7
- Primary proper motion DEC: 20
- Secondary proper motion RA: 6
- Secondary proper motion DEC: 20
- Durchmusterung: +46 3403
- Notes: N
