334 Chicago
Chicago (minor planet designation: 334 Chicago) is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.
Modelled shape of Chicago from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | 23 August 1892 |
| Designations | |
MPC designation | (334) Chicago |
Named after | Chicago |
Alternative designations | 1892 L |
Minor planet category | Main belt |
| Adjectives | Chicagoan /ʃɪˈkɑːɡoʊən/ |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.39 yr (45069 d) |
| Aphelion | 3.98201 AU (595.700 Gm) |
| Perihelion | 3.80814 AU (569.690 Gm) |
Semi-major axis | 3.89507 AU (582.694 Gm) |
| Eccentricity | 0.022319 |
Orbital period (sidereal) | 7.69 yr (2807.8 d) |
Mean anomaly | 110.236° |
Mean motion | 0° 7m 41.567s / day |
| Inclination | 4.64130° |
Longitude of ascending node | 130.179° |
| 148.310° | |
| Physical characteristics | |
| Dimensions | 198.77±5.7 km 167.26 ± 7.27 km |
| Mass | (5.06 ± 5.63) × 1018 kg |
Synodic rotation period | 7.361 h (0.3067 d) |
| 0.041±0.013 | |
| C | |
| 7.7 | |
It was discovered by Max Wolf on August 23, 1892, in Heidelberg.
During 1999, the asteroid was observed occulting a star. The resulting chords provided a cross-section diameter estimate of 174.1 km.
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