Chaldaea (minor planet designation: 313 Chaldaea) is a large Main belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.[2] It was discovered by Johann Palisa on 30 August 1891 in Vienna.
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 30 August 1891 |
| Designations | |
MPC designation | (313) Chaldaea |
| Pronunciation | /kælˈdiːə/[1] |
Named after | Chaldea |
Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.79 yr (44849 d) |
| Aphelion | 2.8054 AU (419.68 Gm) |
| Perihelion | 1.9456 AU (291.06 Gm) |
Semi-major axis | 2.3755 AU (355.37 Gm) |
| Eccentricity | 0.18096 |
Orbital period (sidereal) | 3.66 yr (1337.3 d) |
Mean anomaly | 262.291° |
Mean motion | 0° 16m 9.084s / day |
| Inclination | 11.654° |
Longitude of ascending node | 176.640° |
Argument of perihelion | 316.013° |
| Physical characteristics | |
| Dimensions | 96.34±1.7 km |
Synodic rotation period | 8.392 h (0.3497 d) |
Geometric albedo | 0.0524±0.002 |
Spectral type | C |
Absolute magnitude (H) | 8.90 |
In 2003, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.07 AU. The resulting data yielded an effective diameter of 96 ± 14 km.[3]
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