21172-0414
- Unique Name: 21172-0414BU 161AD
- RA: 21 17 10.66
- Dec: -04 14 22.3
- Discoverer: BU
- Discoverer Number: 161
- Components: AD
- First year: 1891
- Last year: 2002
- Observations: 5
- First position angle: 315
- Last position angle: 317
- First separation: 34.1
- Last separation: 32.2
- Mag first component: 8.18
- Mag second component: 13.7
- Spectral type: K0
- Primary proper motion RA: 10
- Primary proper motion DEC: 2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
