21176+2841
- Unique Name: 21176+2841MLB 489AB
- RA: 21 17 38.12
- Dec: +28 40 46.1
- Discoverer: MLB
- Discoverer Number: 489
- Components: AB
- First year: 1894
- Last year: 2012
- Observations: 5
- First position angle: 216
- Last position angle: 205
- First separation: 2.9
- Last separation: 4.9
- Mag first component: 10.32
- Mag second component: 12.3
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -7
- Secondary proper motion RA: -9
- Secondary proper motion DEC: -29
- Durchmusterung: +28 4045
- Notes: N
