21001+4911
- Unique Name: 21001+4911HJ 1604
- RA: 21 00 03.78
- Dec: +49 10 05.1
- Discoverer: HJ
- Discoverer Number: 1604
- Components:
- First year: 1828
- Last year: 2012
- Observations: 8
- First position angle: 129
- Last position angle: 143
- First separation: 18.0
- Last separation: 30.3
- Mag first component: 11.56
- Mag second component: 12.24
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: 13
- Secondary proper motion RA: -7
- Secondary proper motion DEC: -39
- Durchmusterung:
- Notes:
