21397+2041
- Unique Name: 21397+2041GMC 23
- RA: 21 39 44.08
- Dec: +20 40 39.3
- Discoverer: GMC
- Discoverer Number: 23
- Components:
- First year: 1951
- Last year: 1994
- Observations: 2
- First position angle: 341
- Last position angle: 343
- First separation: 10.7
- Last separation: 10.3
- Mag first component: 16.4
- Mag second component: 19.2
- Spectral type: K7V+M3V
- Primary proper motion RA: -17
- Primary proper motion DEC: -28
- Secondary proper motion RA: -18
- Secondary proper motion DEC: -29
- Durchmusterung:
- Notes: V
