400 Ducrosa
Main-belt asteroid
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400 Ducrosa is a typical main belt asteroid. It was discovered by Auguste Charlois on 15 March 1895 in Nice, and named for It J. Ducros a mechanic at the Nice Observatory.[4] This minor planet is orbiting the Sun at a distance of 3.126 AU with a period of 5.527 yr and an orbital eccentricity of 0.117. The orbital plane is inclined at an angle of 10.5° to the plane of the ecliptic.[1]
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_Ducrosa.png) Modelled shape of Ducrosa from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 15 March 1895 |
| Designations | |
| (400) Ducrosa | |
Named after | J. Ducros |
| 1895 BU | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 121.08 yr (44225 d) |
| Aphelion | 3.49063 AU (522.191 Gm) |
| Perihelion | 2.76117 AU (413.065 Gm) |
| 3.12590 AU (467.628 Gm) | |
| Eccentricity | 0.11668 |
| 5.527 yr (2,018.6 d) | |
Average orbital speed | 16.84 km/s |
| 294.184° | |
| 0° 10m 42.013s / day | |
| Inclination | 10.5354° |
| 327.145° | |
| 238.468° | |
| Earth MOID | 1.7762 AU (265.72 Gm) |
| Jupiter MOID | 1.59886 AU (239.186 Gm) |
| TJupiter | 3.178 |
| Physical characteristics | |
| Dimensions | 33.66±1.6 km |
| 6.87 h (0.286 d)[1] 6.87 ± 0.01 hours[2] | |
| 0.1423±0.014 | |
| B[3] | |
| 10.5 | |
This asteroid has a B-type taxonomy, indicating it has a relatively bright geometric albedo for a carbonaceous asteroid.[3] It has an estimated diameter of 33.66±1.6 km.[1] Photometric measurements of the asteroid made in 2005 at the Palmer Divide Observatory showed a light curve with a rotation period of 6.87±0.01 h and a brightness variation of 0.62±0.02 in magnitude.[2] A 2020 study found a rotation period of 6.8678±0.0001 h with a variation of 0.57±0.03 magnitude.[5]
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