20521+4438
- Unique Name: 20521+4438HER 18
- RA: 20 52 03.78
- Dec: +44 37 28.9
- Discoverer: HER
- Discoverer Number: 18
- Components:
- First year: 1960
- Last year: 2000
- Observations: 3
- First position angle: 80
- Last position angle: 85
- First separation: 40.0
- Last separation: 60.7
- Mag first component: 17.0
- Mag second component: 17.0
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: -12
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
