17457+3557
- Unique Name: 17457+3557TDT 493
- RA: 17 45 41.60
- Dec: +35 56 41.8
- Discoverer: TDT
- Discoverer Number: 493
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 141
- Last position angle: 141
- First separation: 0.7
- Last separation: 0.7
- Mag first component: 11.27
- Mag second component: 11.69
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: 20
- Secondary proper motion RA: -5
- Secondary proper motion DEC: 20
- Durchmusterung:
- Notes: