21404+3426
- Unique Name: 21404+3426TDT3100
- RA: 21 40 23.90
- Dec: +34 25 41.7
- Discoverer: TDT
- Discoverer Number: 3100
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 145
- Last position angle: 145
- First separation: 2.4
- Last separation: 2.4
- Mag first component: 12.22
- Mag second component: 12.8
- Spectral type:
- Primary proper motion RA: 10
- Primary proper motion DEC: 18
- Secondary proper motion RA: 10
- Secondary proper motion DEC: 18
- Durchmusterung:
- Notes: