21127+4900
- Unique Name: 21127+4900COU2652
- RA: 21 12 44.02
- Dec: +48 59 39.1
- Discoverer: COU
- Discoverer Number: 2652
- Components:
- First year: 1991
- Last year: 2008
- Observations: 3
- First position angle: 339
- Last position angle: 336
- First separation: 0.5
- Last separation: 0.7
- Mag first component: 10.13
- Mag second component: 10.32
- Spectral type: K0
- Primary proper motion RA: -9
- Primary proper motion DEC: -14
- Secondary proper motion RA: -9
- Secondary proper motion DEC: -14
- Durchmusterung: +48 3309
- Notes: