21198+2730
- Unique Name: 21198+2730UC 258
- RA: 21 19 48.98
- Dec: +27 30 16.6
- Discoverer: UC
- Discoverer Number: 258
- Components:
- First year: 1997
- Last year: 2002
- Observations: 3
- First position angle: 331
- Last position angle: 331
- First separation: 13.9
- Last separation: 13.9
- Mag first component: 8.35
- Mag second component: 12.82
- Spectral type: G0V
- Primary proper motion RA: 99
- Primary proper motion DEC: 19
- Secondary proper motion RA: 91
- Secondary proper motion DEC: 22
- Durchmusterung:
- Notes: V