21029+3946
- Unique Name: 21029+3946SEI1379
- RA: 21 02 55.32
- Dec: +39 45 16.0
- Discoverer: SEI
- Discoverer Number: 1379
- Components:
- First year: 1892
- Last year: 2002
- Observations: 4
- First position angle: 10
- Last position angle: 7
- First separation: 19.8
- Last separation: 19.4
- Mag first component: 11.23
- Mag second component: 12.5
- Spectral type:
- Primary proper motion RA: 4
- Primary proper motion DEC: 1
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -2
- Durchmusterung: +39 4416
- Notes: