21121-2735
- Unique Name: 21121-2735HJ 3012
- RA: 21 12 08.25
- Dec: -27 35 41.1
- Discoverer: HJ
- Discoverer Number: 3012
- Components:
- First year: 1830
- Last year: 1999
- Observations: 8
- First position angle: 324
- Last position angle: 320
- First separation: 25.0
- Last separation: 25.8
- Mag first component: 9.89
- Mag second component: 10.82
- Spectral type: F2V
- Primary proper motion RA: 24
- Primary proper motion DEC: -6
- Secondary proper motion RA: 22
- Secondary proper motion DEC: -5
- Durchmusterung: -2817165
- Notes: