21440-5720
- Unique Name: 21440-5720JC 25AC
- RA: 21 43 59.16
- Dec: -57 19 30.4
- Discoverer: JC
- Discoverer Number: 25
- Components: AC
- First year: 1845
- Last year: 1999
- Observations: 15
- First position angle: 221
- Last position angle: 214
- First separation: 205.4
- Last separation: 187.0
- Mag first component: 6.54
- Mag second component: 7.47
- Spectral type: K2III
- Primary proper motion RA: -117
- Primary proper motion DEC: -52
- Secondary proper motion RA: 51
- Secondary proper motion DEC: -48
- Durchmusterung: -57 9939
- Notes: N
