21363+4012
- Unique Name: 21363+4012AG 273
- RA: 21 36 18.51
- Dec: +40 11 40.4
- Discoverer: AG
- Discoverer Number: 273
- Components:
- First year: 1902
- Last year: 2002
- Observations: 6
- First position angle: 5
- Last position angle: 3
- First separation: 8.3
- Last separation: 8.8
- Mag first component: 10.58
- Mag second component: 11.0
- Spectral type: A2
- Primary proper motion RA: 2
- Primary proper motion DEC: -6
- Secondary proper motion RA: -6
- Secondary proper motion DEC: 2
- Durchmusterung: +39 4610
- Notes: