20129+3642
- Unique Name: 20129+3642SEI1011
- RA: 20 12 56.25
- Dec: +36 42 17.9
- Discoverer: SEI
- Discoverer Number: 1011
- Components:
- First year: 1896
- Last year: 2010
- Observations: 5
- First position angle: 260
- Last position angle: 259
- First separation: 6.4
- Last separation: 6.8
- Mag first component: 10.5
- Mag second component: 11.0
- Spectral type:
- Primary proper motion RA: 4
- Primary proper motion DEC: -5
- Secondary proper motion RA: -8
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: