21542+5927
- Unique Name: 21542+5927HJ 3072
- RA: 21 54 14.28
- Dec: +59 26 32.8
- Discoverer: HJ
- Discoverer Number: 3072
- Components:
- First year: 1831
- Last year: 2003
- Observations: 10
- First position angle: 82
- Last position angle: 76
- First separation: 15.0
- Last separation: 13.0
- Mag first component: 8.89
- Mag second component: 12.55
- Spectral type: G5
- Primary proper motion RA: 3
- Primary proper motion DEC: -7
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -2
- Durchmusterung: +58 2349
- Notes: