21429+3904
- Unique Name: 21429+3904GRV 496
- RA: 21 42 55.63
- Dec: +39 04 33.4
- Discoverer: GRV
- Discoverer Number: 496
- Components:
- First year: 1894
- Last year: 2002
- Observations: 6
- First position angle: 74
- Last position angle: 73
- First separation: 29.5
- Last separation: 29.8
- Mag first component: 11.13
- Mag second component: 11.97
- Spectral type:
- Primary proper motion RA: -11
- Primary proper motion DEC: -20
- Secondary proper motion RA: -7
- Secondary proper motion DEC: -14
- Durchmusterung:
- Notes: