21031+2929
- Unique Name: 21031+2929OSO 139AD
- RA: 21 03 06.12
- Dec: +29 28 56.2
- Discoverer: OSO
- Discoverer Number: 139
- Components: AD
- First year: 1994
- Last year: 2002
- Observations: 4
- First position angle: 114
- Last position angle: 110
- First separation: 24.9
- Last separation: 26.3
- Mag first component: 10.15
- Mag second component: 14.08
- Spectral type:
- Primary proper motion RA: -262
- Primary proper motion DEC: -167
- Secondary proper motion RA: 2
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: N
