21316+4005
- Unique Name: 21316+4005MLB 898
- RA: 21 31 35.40
- Dec: +40 06 03.9
- Discoverer: MLB
- Discoverer Number: 898
- Components:
- First year: 1933
- Last year: 2004
- Observations: 3
- First position angle: 253
- Last position angle: 250
- First separation: 5.8
- Last separation: 6.7
- Mag first component: 9.7
- Mag second component: 10.2
- Spectral type:
- Primary proper motion RA: 10
- Primary proper motion DEC: 1
- Secondary proper motion RA: -17
- Secondary proper motion DEC: -9
- Durchmusterung:
- Notes: