21556+3505
- Unique Name: 21556+3505SEI1544
- RA: 21 55 37.56
- Dec: +35 04 45.3
- Discoverer: SEI
- Discoverer Number: 1544
- Components:
- First year: 1894
- Last year: 2002
- Observations: 5
- First position angle: 217
- Last position angle: 218
- First separation: 21.0
- Last separation: 20.9
- Mag first component: 8.26
- Mag second component: 11.5
- Spectral type: A0
- Primary proper motion RA: 17
- Primary proper motion DEC: -3
- Secondary proper motion RA: 15
- Secondary proper motion DEC: -4
- Durchmusterung: +34 4567
- Notes: N
