21442+2942
- Unique Name: 21442+2942MLB 493
- RA: 21 44 10.69
- Dec: +29 41 31.7
- Discoverer: MLB
- Discoverer Number: 493
- Components:
- First year: 1926
- Last year: 2010
- Observations: 4
- First position angle: 352
- Last position angle: 330
- First separation: 7.9
- Last separation: 8.6
- Mag first component: 10.38
- Mag second component: 12.4
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: 1
- Secondary proper motion RA: -42
- Secondary proper motion DEC: 0
- Durchmusterung: +29 4495
- Notes: