21423+4616
- Unique Name: 21423+4616ES 1275AB
- RA: 21 42 16.59
- Dec: +46 16 22.7
- Discoverer: ES
- Discoverer Number: 1275
- Components: AB
- First year: 1913
- Last year: 2013
- Observations: 6
- First position angle: 4
- Last position angle: 1
- First separation: 66.5
- Last separation: 72.6
- Mag first component: 8.62
- Mag second component: 12.9
- Spectral type: K0
- Primary proper motion RA: 4
- Primary proper motion DEC: -71
- Secondary proper motion RA: 4
- Secondary proper motion DEC: -18
- Durchmusterung: +45 3640
- Notes: