21462+2817
- Unique Name: 21462+2817MLB 540AC
- RA: 21 46 00.62
- Dec: +28 17 42.7
- Discoverer: MLB
- Discoverer Number: 540
- Components: AC
- First year: 1898
- Last year: 2011
- Observations: 10
- First position angle: 322
- Last position angle: 323
- First separation: 9.4
- Last separation: 8.7
- Mag first component: 12.62
- Mag second component: 12.7
- Spectral type: F9V
- Primary proper motion RA: 7
- Primary proper motion DEC: -5
- Secondary proper motion RA: -6
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: U
