21098+3143
- Unique Name: 21098+3143ES 2440
- RA: 21 09 47.08
- Dec: +31 43 29.3
- Discoverer: ES
- Discoverer Number: 2440
- Components:
- First year: 1930
- Last year: 1930
- Observations: 1
- First position angle: 202
- Last position angle: 202
- First separation: 5.0
- Last separation: 5.0
- Mag first component: 10.89
- Mag second component: 11.9
- Spectral type:
- Primary proper motion RA: 5
- Primary proper motion DEC: -57
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +31 4356
- Notes: X
