21156+2537
- Unique Name: 21156+2537J 3130AC
- RA: 21 15 33.65
- Dec: +25 40 06.9
- Discoverer: J
- Discoverer Number: 3130
- Components: AC
- First year: 1944
- Last year: 2001
- Observations: 3
- First position angle: 100
- Last position angle: 84
- First separation: 10.0
- Last separation: 6.2
- Mag first component: 11.8
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: 12
- Primary proper motion DEC: -20
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: