21172-0414
- Unique Name: 21172-0414BU 161AE
- RA: 21 17 10.66
- Dec: -04 14 22.3
- Discoverer: BU
- Discoverer Number: 161
- Components: AE
- First year: 1899
- Last year: 2002
- Observations: 4
- First position angle: 332
- Last position angle: 329
- First separation: 40.6
- Last separation: 39.6
- Mag first component: 8.18
- Mag second component: 13.1
- Spectral type: K0
- Primary proper motion RA: 10
- Primary proper motion DEC: 2
- Secondary proper motion RA: -19
- Secondary proper motion DEC: 28
- Durchmusterung:
- Notes: N
