21424+2140
- Unique Name: 21424+2140GRV 495
- RA: 21 42 26.69
- Dec: +21 40 32.2
- Discoverer: GRV
- Discoverer Number: 495
- Components:
- First year: 1894
- Last year: 2001
- Observations: 4
- First position angle: 146
- Last position angle: 146
- First separation: 33.7
- Last separation: 33.9
- Mag first component: 12.94
- Mag second component: 12.98
- Spectral type:
- Primary proper motion RA: 14
- Primary proper motion DEC: -49
- Secondary proper motion RA: 15
- Secondary proper motion DEC: -51
- Durchmusterung:
- Notes: