21403+3858
- Unique Name: 21403+3858MLB 787
- RA: 21 40 15.19
- Dec: +38 58 41.9
- Discoverer: MLB
- Discoverer Number: 787
- Components:
- First year: 1932
- Last year: 2002
- Observations: 4
- First position angle: 351
- Last position angle: 351
- First separation: 4.3
- Last separation: 5.4
- Mag first component: 10.98
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: 0
- Primary proper motion DEC: -1
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: