21538-2000
- Unique Name: 21538-2000BU 168A,BC
- RA: 21 53 46.48
- Dec: -20 00 25.7
- Discoverer: BU
- Discoverer Number: 168
- Components: A,BC
- First year: 1868
- Last year: 1999
- Observations: 32
- First position angle: 74
- Last position angle: 72
- First separation: 6.1
- Last separation: 5.8
- Mag first component: 8.14
- Mag second component: 10.34
- Spectral type: F5V
- Primary proper motion RA: 32
- Primary proper motion DEC: 132
- Secondary proper motion RA: 41
- Secondary proper motion DEC: 139
- Durchmusterung: -20 6313
- Notes: NVD
