21408+2140
- Unique Name: 21408+2140LDS4903
- RA: 21 40 47.95
- Dec: +21 40 43.1
- Discoverer: LDS
- Discoverer Number: 4903
- Components:
- First year: 1960
- Last year: 1960
- Observations: 1
- First position angle: 100
- Last position angle: 100
- First separation: 81.0
- Last separation: 81.0
- Mag first component: 17.4
- Mag second component: 20.3
- Spectral type:
- Primary proper motion RA: -62
- Primary proper motion DEC: -76
- Secondary proper motion RA: -208
- Secondary proper motion DEC: -190
- Durchmusterung:
- Notes: I
