21458+3945
- Unique Name: 21458+3945MLB 902
- RA: 21 45 27.82
- Dec: +39 45 30.1
- Discoverer: MLB
- Discoverer Number: 902
- Components:
- First year: 1933
- Last year: 2002
- Observations: 4
- First position angle: 315
- Last position angle: 325
- First separation: 5.2
- Last separation: 5.6
- Mag first component: 13.3
- Mag second component: 13.3
- Spectral type:
- Primary proper motion RA: 16
- Primary proper motion DEC: 1
- Secondary proper motion RA: -17
- Secondary proper motion DEC: 14
- Durchmusterung:
- Notes: