21420+2924
- Unique Name: 21420+2924MLB 539
- RA: 21 42 00.18
- Dec: +29 22 57.3
- Discoverer: MLB
- Discoverer Number: 539
- Components:
- First year: 1894
- Last year: 2011
- Observations: 6
- First position angle: 142
- Last position angle: 171
- First separation: 6.0
- Last separation: 4.8
- Mag first component: 9.6
- Mag second component: 10.2
- Spectral type:
- Primary proper motion RA: 15
- Primary proper motion DEC: 7
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes:
