21304+4229
- Unique Name: 21304+4229TDT3003
- RA: 21 30 25.60
- Dec: +42 28 30.3
- Discoverer: TDT
- Discoverer Number: 3003
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 309
- Last position angle: 309
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 11.25
- Mag second component: 11.3
- Spectral type:
- Primary proper motion RA: 3
- Primary proper motion DEC: -5
- Secondary proper motion RA: 3
- Secondary proper motion DEC: -5
- Durchmusterung:
- Notes: