21321+4828
- Unique Name: 21321+4828COU2442
- RA: 21 31 49.58
- Dec: +48 28 54.6
- Discoverer: COU
- Discoverer Number: 2442
- Components:
- First year: 1986
- Last year: 1991
- Observations: 2
- First position angle: 265
- Last position angle: 281
- First separation: 0.6
- Last separation: 0.6
- Mag first component: 8.98
- Mag second component: 10.31
- Spectral type: A1.5(III)
- Primary proper motion RA: -10
- Primary proper motion DEC: -19
- Secondary proper motion RA: -10
- Secondary proper motion DEC: -19
- Durchmusterung:
- Notes: