21166+1505
- Unique Name: 21166+1505HDS3028
- RA: 21 16 33.09
- Dec: +15 04 43.8
- Discoverer: HDS
- Discoverer Number: 3028
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 31
- Last position angle: 31
- First separation: 0.1
- Last separation: 0.1
- Mag first component: 9.95
- Mag second component: 10.41
- Spectral type: F5
- Primary proper motion RA: 6
- Primary proper motion DEC: -7
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +14 4575
- Notes: X