21540+4125
- Unique Name: 21540+4125TDT3223
- RA: 21 54 02.84
- Dec: +41 25 29.5
- Discoverer: TDT
- Discoverer Number: 3223
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 123
- Last position angle: 123
- First separation: 0.9
- Last separation: 0.9
- Mag first component: 11.68
- Mag second component: 12.33
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -6
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: