21080+0539
- Unique Name: 21080+0539HJ 3011AB
- RA: 21 07 59.02
- Dec: +05 39 06.0
- Discoverer: HJ
- Discoverer Number: 3011
- Components: AB
- First year: 1830
- Last year: 2000
- Observations: 4
- First position angle: 255
- Last position angle: 254
- First separation: 20.0
- Last separation: 11.5
- Mag first component: 8.3
- Mag second component: 14.5
- Spectral type: K0
- Primary proper motion RA: -22
- Primary proper motion DEC: -117
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +05 4707
- Notes: