21528-2903
- Unique Name: 21528-2903UC 4587
- RA: 21 52 49.31
- Dec: -29 03 03.2
- Discoverer: UC
- Discoverer Number: 4587
- Components:
- First year: 1913
- Last year: 1999
- Observations: 4
- First position angle: 185
- Last position angle: 187
- First separation: 10.4
- Last separation: 10.5
- Mag first component: 11.6
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: 101
- Primary proper motion DEC: 12
- Secondary proper motion RA: 98
- Secondary proper motion DEC: 5
- Durchmusterung:
- Notes: V
