21156-3927
- Unique Name: 21156-3927HJ 5254A,BC
- RA: 21 15 36.02
- Dec: -39 27 09.9
- Discoverer: HJ
- Discoverer Number: 5254
- Components: A,BC
- First year: 1879
- Last year: 1999
- Observations: 14
- First position angle: 183
- Last position angle: 190
- First separation: 57.4
- Last separation: 58.5
- Mag first component: 8.68
- Mag second component: 9.62
- Spectral type: G1V
- Primary proper motion RA: 88
- Primary proper motion DEC: -23
- Secondary proper motion RA: 19
- Secondary proper motion DEC: -17
- Durchmusterung: -3914175
- Notes: D
