21165+3959
- Unique Name: 21165+3959SEI1484
- RA: 21 16 30.17
- Dec: +39 59 50.6
- Discoverer: SEI
- Discoverer Number: 1484
- Components:
- First year: 1895
- Last year: 2003
- Observations: 7
- First position angle: 4
- Last position angle: 7
- First separation: 3.6
- Last separation: 4.2
- Mag first component: 10.8
- Mag second component: 12.3
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -10
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +39 4501
- Notes: N
