21558+3716
- Unique Name: 21558+3716HO 174CD
- RA: 21 55 38.08
- Dec: +37 14 02.7
- Discoverer: HO
- Discoverer Number: 174
- Components: CD
- First year: 1881
- Last year: 2011
- Observations: 12
- First position angle: 89
- Last position angle: 82
- First separation: 6.3
- Last separation: 6.0
- Mag first component: 12.7
- Mag second component: 12.33
- Spectral type:
- Primary proper motion RA: -26
- Primary proper motion DEC: -10
- Secondary proper motion RA: 20
- Secondary proper motion DEC: -4
- Durchmusterung:
- Notes: N
