21073+3857
- Unique Name: 21073+3857MLB 889
- RA: 21 07 18.20
- Dec: +38 57 18.4
- Discoverer: MLB
- Discoverer Number: 889
- Components:
- First year: 1933
- Last year: 2008
- Observations: 4
- First position angle: 1
- Last position angle: 4
- First separation: 5.8
- Last separation: 7.0
- Mag first component: 10.2
- Mag second component: 11.5
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -3
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes:
