21304+3859
- Unique Name: 21304+3859KU 131
- RA: 21 30 21.26
- Dec: +38 58 46.6
- Discoverer: KU
- Discoverer Number: 131
- Components:
- First year: 1901
- Last year: 2010
- Observations: 8
- First position angle: 10
- Last position angle: 12
- First separation: 34.1
- Last separation: 36.5
- Mag first component: 9.56
- Mag second component: 10.75
- Spectral type: A0
- Primary proper motion RA: -4
- Primary proper motion DEC: -6
- Secondary proper motion RA: 16
- Secondary proper motion DEC: 14
- Durchmusterung: +38 4512
- Notes: