21331+4047
- Unique Name: 21331+4047GRV 477
- RA: 21 33 10.34
- Dec: +40 47 52.2
- Discoverer: GRV
- Discoverer Number: 477
- Components:
- First year: 2000
- Last year: 2002
- Observations: 2
- First position angle: 316
- Last position angle: 316
- First separation: 21.5
- Last separation: 21.5
- Mag first component: 11.2
- Mag second component: 12.3
- Spectral type:
- Primary proper motion RA: -29
- Primary proper motion DEC: -36
- Secondary proper motion RA: -29
- Secondary proper motion DEC: -36
- Durchmusterung:
- Notes: