21509-8243
- Unique Name: 21509-8243HJ 5278
- RA: 21 50 54.51
- Dec: -82 43 08.1
- Discoverer: HJ
- Discoverer Number: 5278
- Components:
- First year: 1835
- Last year: 2008
- Observations: 28
- First position angle: 83
- Last position angle: 63
- First separation: 3.4
- Last separation: 3.5
- Mag first component: 5.56
- Mag second component: 7.26
- Spectral type: G8-K0III
- Primary proper motion RA: 56
- Primary proper motion DEC: -37
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -83 722
- Notes: N D
