21490+4316
- Unique Name: 21490+4316BRT1152
- RA: 21 48 57.57
- Dec: +43 15 38.7
- Discoverer: BRT
- Discoverer Number: 1152
- Components:
- First year: 1895
- Last year: 2010
- Observations: 12
- First position angle: 251
- Last position angle: 232
- First separation: 3.5
- Last separation: 6.3
- Mag first component: 10.2
- Mag second component: 10.4
- Spectral type:
- Primary proper motion RA: 34
- Primary proper motion DEC: 20
- Secondary proper motion RA: -20
- Secondary proper motion DEC: -13
- Durchmusterung:
- Notes: