21515+1806
- Unique Name: 21515+1806GIC 173
- RA: 21 51 36.59
- Dec: +18 05 39.8
- Discoverer: GIC
- Discoverer Number: 173
- Components:
- First year: 1960
- Last year: 2001
- Observations: 6
- First position angle: 140
- Last position angle: 139
- First separation: 6.0
- Last separation: 5.7
- Mag first component: 16.7
- Mag second component: 16.8
- Spectral type:
- Primary proper motion RA: -126
- Primary proper motion DEC: 28
- Secondary proper motion RA: 60
- Secondary proper motion DEC: -213
- Durchmusterung:
- Notes: N
