20121+0306
- Unique Name: 20121+0306HEI 581
- RA: 20 12 04.92
- Dec: +03 05 12.3
- Discoverer: HEI
- Discoverer Number: 581
- Components:
- First year: 1989
- Last year: 1994
- Observations: 3
- First position angle: 156
- Last position angle: 153
- First separation: 0.5
- Last separation: 0.4
- Mag first component: 10.54
- Mag second component: 11.11
- Spectral type:
- Primary proper motion RA: 6
- Primary proper motion DEC: 2
- Secondary proper motion RA: 6
- Secondary proper motion DEC: 2
- Durchmusterung: +02 4106
- Notes: