20129+3429
- Unique Name: 20129+3429AG 250
- RA: 20 12 55.97
- Dec: +34 28 31.6
- Discoverer: AG
- Discoverer Number: 250
- Components:
- First year: 1896
- Last year: 2006
- Observations: 15
- First position angle: 52
- Last position angle: 51
- First separation: 8.9
- Last separation: 8.7
- Mag first component: 8.45
- Mag second component: 10.2
- Spectral type: A2V
- Primary proper motion RA: 2
- Primary proper motion DEC: -17
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -17
- Durchmusterung: +34 3916
- Notes: D
