20090+4045
- Unique Name: 20090+4045HJ 1487
- RA: 20 09 03.33
- Dec: +40 44 08.1
- Discoverer: HJ
- Discoverer Number: 1487
- Components:
- First year: 1828
- Last year: 2006
- Observations: 4
- First position angle: 290
- Last position angle: 298
- First separation: 6.0
- Last separation: 14.3
- Mag first component: 10.6
- Mag second component: 13.6
- Spectral type: M4
- Primary proper motion RA: 1
- Primary proper motion DEC: -7
- Secondary proper motion RA: -6
- Secondary proper motion DEC: -1
- Durchmusterung: +40 4035
- Notes: