21399+2737
- Unique Name: 21399+2737HDS3083
- RA: 21 39 54.19
- Dec: +27 36 45.4
- Discoverer: HDS
- Discoverer Number: 3083
- Components:
- First year: 1991
- Last year: 2008
- Observations: 19
- First position angle: 135
- Last position angle: 333
- First separation: 0.2
- Last separation: 0.2
- Mag first component: 11.95
- Mag second component: 13.22
- Spectral type: M2 M4
- Primary proper motion RA: 281
- Primary proper motion DEC: -230
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: NO
