21503-4547
- Unique Name: 21503-4547HDS3108
- RA: 21 50 20.31
- Dec: -45 47 10.5
- Discoverer: HDS
- Discoverer Number: 3108
- Components:
- First year: 1903
- Last year: 1999
- Observations: 6
- First position angle: 281
- Last position angle: 276
- First separation: 8.8
- Last separation: 8.6
- Mag first component: 9.51
- Mag second component: 12.49
- Spectral type: F7V
- Primary proper motion RA: 37
- Primary proper motion DEC: 11
- Secondary proper motion RA: -27
- Secondary proper motion DEC: 14
- Durchmusterung: -4614087
- Notes: