21503-1812
- Unique Name: 21503-1812UC 4579
- RA: 21 50 15.14
- Dec: -18 11 40.4
- Discoverer: UC
- Discoverer Number: 4579
- Components:
- First year: 1998
- Last year: 1999
- Observations: 2
- First position angle: 170
- Last position angle: 170
- First separation: 60.3
- Last separation: 60.2
- Mag first component: 9.8
- Mag second component: 16.1
- Spectral type:
- Primary proper motion RA: 152
- Primary proper motion DEC: -66
- Secondary proper motion RA: 152
- Secondary proper motion DEC: -66
- Durchmusterung:
- Notes: V