21098+2915
- Unique Name: 21098+2915DU 3
- RA: 21 10 54.59
- Dec: +28 56 10.4
- Discoverer: DU
- Discoverer Number: 3
- Components:
- First year: 1873
- Last year: 2011
- Observations: 10
- First position angle: 18
- Last position angle: 15
- First separation: 6.4
- Last separation: 6.0
- Mag first component: 10.67
- Mag second component: 10.69
- Spectral type:
- Primary proper motion RA: 36
- Primary proper motion DEC: -18
- Secondary proper motion RA: 42
- Secondary proper motion DEC: -11
- Durchmusterung: +28 4014
- Notes: N
