21402+4316
- Unique Name: 21402+4316STTA221AC
- RA: 21 40 11.10
- Dec: +43 16 25.7
- Discoverer: STT
- Discoverer Number: 0
- Components: AC
- First year: 1828
- Last year: 2003
- Observations: 23
- First position angle: 254
- Last position angle: 253
- First separation: 45.0
- Last separation: 62.2
- Mag first component: 5.28
- Mag second component: 10.26
- Spectral type: M1IIIab
- Primary proper motion RA: 62
- Primary proper motion DEC: 16
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -14
- Durchmusterung:
- Notes: N
