345 Tercidina
Main-belt asteroid
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345 Tercidina is a large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.
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A three-dimensional model of 345 Tercidina based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 23 November 1892 |
| Designations | |
| (345) Tercidina | |
| Pronunciation | /tɜːrsɪˈdaɪnə/ |
Named after | (unknown) |
| 1892 O | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.88 yr (44882 d) |
| Aphelion | 2.46765 AU (369.155 Gm) |
| Perihelion | 2.18337 AU (326.628 Gm) |
| 2.32551 AU (347.891 Gm) | |
| Eccentricity | 0.061120 |
| 3.55 yr (1295.3 d) | |
| 288.675° | |
| 0° 16m 40.526s / day | |
| Inclination | 9.74765° |
| 212.629° | |
| 230.279° | |
| Physical characteristics | |
| Dimensions | 126x94x90 km[2][3][1] 94 km (mean)[1] 98.78 ± 2.63 km[4] |
| Mass | (2.68 ± 1.18) × 1018 kg[4] |
Mean density | 5.30 ± 2.37 g/cm3[4] |
| 12.371 h (0.5155 d)[1] | |
| 0.0654±0.007[1] | |
| C[1] | |
| 8.71[1] | |
It was discovered by Auguste Charlois on 23 November 1892, in Nice.
Size
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.[3]
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.[citation needed]
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