21327+2930
- Unique Name: 21327+2930ES 517
- RA: 21 32 43.60
- Dec: +29 30 23.0
- Discoverer: ES
- Discoverer Number: 517
- Components:
- First year: 1907
- Last year: 2001
- Observations: 4
- First position angle: 239
- Last position angle: 240
- First separation: 2.1
- Last separation: 2.5
- Mag first component: 10.5
- Mag second component: 11.54
- Spectral type: F8
- Primary proper motion RA: -2
- Primary proper motion DEC: -6
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -6
- Durchmusterung: +28 4122
- Notes: