21506-5647
- Unique Name: 21506-5647HU 1633
- RA: 21 50 36.89
- Dec: -56 47 04.1
- Discoverer: HU
- Discoverer Number: 1633
- Components:
- First year: 1913
- Last year: 1991
- Observations: 8
- First position angle: 317
- Last position angle: 322
- First separation: 1.5
- Last separation: 1.6
- Mag first component: 10.11
- Mag second component: 10.29
- Spectral type: G0V
- Primary proper motion RA: -4
- Primary proper motion DEC: -20
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -20
- Durchmusterung: -57 9965
- Notes: