21308+4827
- Unique Name: 21308+4827A 770DE
- RA: 21 30 50.46
- Dec: +48 28 59.4
- Discoverer: A
- Discoverer Number: 770
- Components: DE
- First year: 1907
- Last year: 2006
- Observations: 3
- First position angle: 40
- Last position angle: 42
- First separation: 7.0
- Last separation: 7.0
- Mag first component: 10.59
- Mag second component: 12.0
- Spectral type: F0
- Primary proper motion RA: -8
- Primary proper motion DEC: -18
- Secondary proper motion RA: -7
- Secondary proper motion DEC: -13
- Durchmusterung:
- Notes: N
