02042+5257
- Unique Name: 02042+5257HJ 2104
- RA: 02 04 12.90
- Dec: +52 57 29.2
- Discoverer: HJ
- Discoverer Number: 2104
- Components:
- First year: 1831
- Last year: 2003
- Observations: 15
- First position angle: 166
- Last position angle: 170
- First separation: 25.0
- Last separation: 30.6
- Mag first component: 9.35
- Mag second component: 9.61
- Spectral type: A0
- Primary proper motion RA: -1
- Primary proper motion DEC: -3
- Secondary proper motion RA: -11
- Secondary proper motion DEC: -5
- Durchmusterung: +52 500
- Notes: N
