21516+3030
- Unique Name: 21516+3030MLB 669
- RA: 21 51 35.73
- Dec: +30 29 57.9
- Discoverer: MLB
- Discoverer Number: 669
- Components:
- First year: 1930
- Last year: 2002
- Observations: 3
- First position angle: 309
- Last position angle: 310
- First separation: 2.5
- Last separation: 3.4
- Mag first component: 9.5
- Mag second component: 10.5
- Spectral type:
- Primary proper motion RA: -2
- Primary proper motion DEC: 0
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: