21439+0812
- Unique Name: 21439+0812UC 4540
- RA: 21 43 54.67
- Dec: +08 12 29.9
- Discoverer: UC
- Discoverer Number: 4540
- Components:
- First year: 2000
- Last year: 2000
- Observations: 2
- First position angle: 92
- Last position angle: 92
- First separation: 48.4
- Last separation: 48.4
- Mag first component: 15.5
- Mag second component: 16.3
- Spectral type:
- Primary proper motion RA: 57
- Primary proper motion DEC: 37
- Secondary proper motion RA: 56
- Secondary proper motion DEC: 36
- Durchmusterung:
- Notes: V
