21399+6808
- Unique Name: 21399+6808STF2823
- RA: 21 39 51.11
- Dec: +68 07 50.5
- Discoverer: STF
- Discoverer Number: 2823
- Components:
- First year: 1832
- Last year: 2008
- Observations: 19
- First position angle: 251
- Last position angle: 253
- First separation: 1.6
- Last separation: 1.4
- Mag first component: 9.24
- Mag second component: 10.08
- Spectral type: A2
- Primary proper motion RA: -3
- Primary proper motion DEC: -9
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -9
- Durchmusterung: +67 1340
- Notes: