21257-3913
- Unique Name: 21257-3913SEE 445
- RA: 21 25 42.83
- Dec: -39 12 45.3
- Discoverer: SEE
- Discoverer Number: 445
- Components:
- First year: 1896
- Last year: 1991
- Observations: 11
- First position angle: 219
- Last position angle: 215
- First separation: 1.9
- Last separation: 2.2
- Mag first component: 8.45
- Mag second component: 9.7
- Spectral type: A2
- Primary proper motion RA: 12
- Primary proper motion DEC: 21
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -3914245
- Notes:
