| Minorplanet: | yes |
| Background: |
|
| 591 Irmgard | |
| Mpc Name: | (591) Irmgard |
| Pronounced: | pronounced as /de/[1] |
| Alt Names: | 1906 TP |
| Discovered: | 14 March 1906 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.20718 |
| Semimajor: | 2.6792AU |
| Perihelion: | 2.1241AU |
| Aphelion: | 3.2342abbr=onNaNabbr=on |
| Period: | 4.39 yr (1601.8 d) |
| Inclination: | 12.490° |
| Asc Node: | 334.289° |
| Arg Peri: | 217.191° |
| Mean Motion: | / day |
| Orbit Ref: | [2] |
| Observation Arc: | 110.08 yr (40205 d) |
| Uncertainty: | 0 |
| Abs Magnitude: | 10.64 |
| Rotation: | 7.35abbr=onNaNabbr=on |
| Mean Radius: | km |
591 Irmgard is a minor planet orbiting the Sun.