| Minorplanet: | yes |
| Background: |
|
| 112 Iphigenia | |
| Discovered: | 19 September 1870 |
| Mpc Name: | (112) Iphigenia |
| Alt Names: | A870 SA |
| Pronounced: | [1] |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.43415AU |
| Perihelion: | 2.12225AU |
| Aphelion: | 2.7461abbr=onNaNabbr=on |
| Eccentricity: | 0.12813 |
| Period: | 3.80 yr (1387.1 d) |
| Inclination: | 2.6029° |
| Asc Node: | 323.538° |
| Arg Peri: | 16.676° |
| Avg Speed: | 19.01 km/s |
| Dimensions: | 71.07 ± 0.52 km |
| Density: | 10.48 ± 36.06 g/cm3 |
| Surface Grav: | 0.0202 m/s² |
| Escape Velocity: | 0.0382 km/s |
| Rotation: | 31.466abbr=onNaNabbr=on |
| Abs Magnitude: | 9.84 |
| Mean Motion: | / day |
| Observation Arc: | 145.57 yr (53169 d) |
| Uncertainty: | 0 |
| Moid: | 1.11284AU |
| Jupiter Moid: | 2.60275AU |
| Tisserand: | 3.493 |
112 Iphigenia is a fairly large and exceedingly dark main-belt asteroid. It is classified as a C-type asteroid, and therefore probably has a primitive carbonaceous composition. It was discovered by German-American astronomer C. H. F. Peters on September 19, 1870, and named after Iphigenia, a princess sacrificed by her father in Greek mythology. The orbital elements for 112 Iphigenia were published by German astronomer Friedrich Tietjen in 1871.
This body is orbiting the Sun with a period of 3.80 years and an eccentricity of 0.13. The orbital plane is inclined by 2.6° to the plane of the ecliptic. 112 Iphigenia has a cross-section diameter of ~72 km. Photometric observations of this asteroid during 2007 at the Observatorio Astronómico de Mallorca were used to create a light curve plot, which was published in 2010. This showed a relatively long synodic rotation period of hours (1.3 days) and a brightness variation of magnitude during each cycle. These findings agree with independent results reported in 2008, which gave a period of hours.