| Minorplanet: | yes |
| Background: |
|
| 345 Tercidina | |
| Discovered: | 23 November 1892 |
| Mpc Name: | (345) Tercidina |
| Alt Names: | 1892 O |
| Named After: | (unknown) |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.32551AU |
| Perihelion: | 2.18337AU |
| Aphelion: | 2.46765abbr=onNaNabbr=on |
| Eccentricity: | 0.061120 |
| Period: | 3.55 yr (1295.3 d) |
| Inclination: | 9.74765° |
| Asc Node: | 212.629° |
| Arg Peri: | 230.279° |
| Dimensions: | 126x94x90 km 94 km 98.78 ± 2.63 km |
| Density: | 5.30 ± 2.37 g/cm3 |
| Rotation: | 12.371abbr=onNaNabbr=on |
| Abs Magnitude: | 8.71 |
| Mean Motion: | / day |
| Observation Arc: | 122.88 yr (44882 d) |
| Uncertainty: | 0 |
345 Tercidina is a large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.
It was discovered by Auguste Charlois on 23 November 1892, in Nice.
Observations of an occultation of a bright 5.5 magnitude star on 17 September 2002, produced seventy-five chords indicating an ellipsoid of 111×90 km.[1]
Observations of an occultation on 15 November 2005, near Grass Valley, California, produced five chords indicating an incomplete outline of 126×111 km.[2] This larger result may be caused by a different orientation of the asteroid as it passed in front of the star.
