21138+2329
- Unique Name: 21138+2329BKO 889
- RA: 21 13 47.35
- Dec: +23 28 59.5
- Discoverer: BKO
- Discoverer Number: 889
- Components:
- First year: 1998
- Last year: 2009
- Observations: 3
- First position angle: 13
- Last position angle: 14
- First separation: 7.3
- Last separation: 8.1
- Mag first component: 15.1
- Mag second component: 15.4
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: -35
- Secondary proper motion RA: 5
- Secondary proper motion DEC: 24
- Durchmusterung:
- Notes: