21197+2155
- Unique Name: 21197+2155TDT2907
- RA: 21 19 39.14
- Dec: +21 54 56.3
- Discoverer: TDT
- Discoverer Number: 2907
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 91
- Last position angle: 91
- First separation: 1.0
- Last separation: 1.0
- Mag first component: 11.7
- Mag second component: 12.15
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: 3
- Secondary proper motion RA: 2
- Secondary proper motion DEC: 3
- Durchmusterung:
- Notes: