21555+2724
- Unique Name: 21555+2724A 303
- RA: 21 55 29.91
- Dec: +27 23 35.6
- Discoverer: A
- Discoverer Number: 303
- Components:
- First year: 1901
- Last year: 1999
- Observations: 13
- First position angle: 51
- Last position angle: 52
- First separation: 1.8
- Last separation: 2.3
- Mag first component: 9.22
- Mag second component: 11.63
- Spectral type: G5
- Primary proper motion RA: -4
- Primary proper motion DEC: -24
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -24
- Durchmusterung: +26 4304
- Notes: