21538-2000
- Unique Name: 21538-2000BU 168AD
- RA: 21 53 46.48
- Dec: -20 00 25.7
- Discoverer: BU
- Discoverer Number: 168
- Components: AD
- First year: 1868
- Last year: 2000
- Observations: 5
- First position angle: 103
- Last position angle: 136
- First separation: 35.6
- Last separation: 39.7
- Mag first component: 8.12
- Mag second component: 14.0
- Spectral type: F5V
- Primary proper motion RA: 29
- Primary proper motion DEC: 130
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
