21588+5227
- Unique Name: 21588+5227HU 773
- RA: 21 58 44.63
- Dec: +52 26 18.2
- Discoverer: HU
- Discoverer Number: 773
- Components:
- First year: 1904
- Last year: 2003
- Observations: 5
- First position angle: 323
- Last position angle: 323
- First separation: 4.7
- Last separation: 4.6
- Mag first component: 9.4
- Mag second component: 11.2
- Spectral type: A0
- Primary proper motion RA: 16
- Primary proper motion DEC: -3
- Secondary proper motion RA: 0
- Secondary proper motion DEC: 20
- Durchmusterung: +51 3208
- Notes: