21402+3703
- Unique Name: 21402+3703SEI1531
- RA: 21 40 10.86
- Dec: +37 03 20.7
- Discoverer: SEI
- Discoverer Number: 1531
- Components:
- First year: 1895
- Last year: 2003
- Observations: 12
- First position angle: 24
- Last position angle: 20
- First separation: 2.4
- Last separation: 3.0
- Mag first component: 11.42
- Mag second component: 11.6
- Spectral type:
- Primary proper motion RA: 33
- Primary proper motion DEC: -2
- Secondary proper motion RA: 31
- Secondary proper motion DEC: -3
- Durchmusterung:
- Notes: N
