21420+0408
- Unique Name: 21420+0408J 1790
- RA: 21 42 01.45
- Dec: +04 08 55.5
- Discoverer: J
- Discoverer Number: 1790
- Components:
- First year: 1941
- Last year: 2008
- Observations: 13
- First position angle: 100
- Last position angle: 96
- First separation: 2.0
- Last separation: 2.3
- Mag first component: 9.1
- Mag second component: 9.3
- Spectral type:
- Primary proper motion RA: 17
- Primary proper motion DEC: -20
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +03 4601
- Notes: