21136+2508
- Unique Name: 21136+2508BKO 888
- RA: 21 13 34.83
- Dec: +25 07 42.8
- Discoverer: BKO
- Discoverer Number: 888
- Components:
- First year: 1999
- Last year: 2009
- Observations: 3
- First position angle: 284
- Last position angle: 287
- First separation: 6.1
- Last separation: 5.5
- Mag first component: 15.3
- Mag second component: 15.4
- Spectral type:
- Primary proper motion RA: 16
- Primary proper motion DEC: -35
- Secondary proper motion RA: -36
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: