00398+2122
- Unique Name: 00398+2122J 635
- RA: 00 39 43.94
- Dec: +21 20 58.0
- Discoverer: J
- Discoverer Number: 635
- Components:
- First year: 1894
- Last year: 2000
- Observations: 7
- First position angle: 137
- Last position angle: 138
- First separation: 3.4
- Last separation: 3.5
- Mag first component: 11.1
- Mag second component: 12.98
- Spectral type:
- Primary proper motion RA: -19
- Primary proper motion DEC: -9
- Secondary proper motion RA: -12
- Secondary proper motion DEC: -15
- Durchmusterung: +20 86
- Notes: B
