21356+1731
- Unique Name: 21356+1731BPM2398
- RA: 21 35 34.91
- Dec: +17 31 21.5
- Discoverer: BPM
- Discoverer Number: 2398
- Components:
- First year: 1996
- Last year: 2001
- Observations: 3
- First position angle: 96
- Last position angle: 96
- First separation: 82.7
- Last separation: 82.6
- Mag first component: 14.56
- Mag second component: 14.64
- Spectral type:
- Primary proper motion RA: -7
- Primary proper motion DEC: -17
- Secondary proper motion RA: -9
- Secondary proper motion DEC: -20
- Durchmusterung:
- Notes: NV
