21129+2329
- Unique Name: 21129+2329BKO 887
- RA: 21 12 54.31
- Dec: +23 29 06.8
- Discoverer: BKO
- Discoverer Number: 887
- Components:
- First year: 1998
- Last year: 2009
- Observations: 3
- First position angle: 115
- Last position angle: 114
- First separation: 42.7
- Last separation: 42.6
- Mag first component: 11.2
- Mag second component: 13.8
- Spectral type:
- Primary proper motion RA: -33
- Primary proper motion DEC: -64
- Secondary proper motion RA: -57
- Secondary proper motion DEC: -40
- Durchmusterung:
- Notes: