21000+4004
- Unique Name: 21000+4004KUI 103
- RA: 21 00 04.89
- Dec: +40 04 15.1
- Discoverer: KUI
- Discoverer Number: 103
- Components:
- First year: 1934
- Last year: 2009
- Observations: 48
- First position angle: 83
- Last position angle: 356
- First separation: 0.9
- Last separation: 0.4
- Mag first component: 10.49
- Mag second component: 12.4
- Spectral type: M3V
- Primary proper motion RA:
- Primary proper motion DEC:
- Secondary proper motion RA: 614
- Secondary proper motion DEC: -247
- Durchmusterung:
- Notes: NO
