21129+2944
- Unique Name: 21129+2944MLB 667
- RA: 21 12 51.80
- Dec: +29 43 25.0
- Discoverer: MLB
- Discoverer Number: 667
- Components:
- First year: 1930
- Last year: 2000
- Observations: 3
- First position angle: 29
- Last position angle: 31
- First separation: 2.4
- Last separation: 2.4
- Mag first component: 10.3
- Mag second component: 10.6
- Spectral type:
- Primary proper motion RA: 23
- Primary proper motion DEC: 0
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +29 4346
- Notes: