21408+4027
- Unique Name: 21408+4027TDT3102
- RA: 21 40 48.84
- Dec: +40 27 17.9
- Discoverer: TDT
- Discoverer Number: 3102
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 25
- Last position angle: 25
- First separation: 1.4
- Last separation: 1.4
- Mag first component: 11.48
- Mag second component: 12.42
- Spectral type:
- Primary proper motion RA: 8
- Primary proper motion DEC: -7
- Secondary proper motion RA: 8
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: