475 Ocllo
| Discovery[1] | |
|---|---|
| Discovered by | D. Stewart |
| Discovery date | 14 August 1901 |
| Designations | |
| MPC designation | (475) Ocllo |
| 1901 HN; 1959 JS; 1979 DD |
|
| Mars-crosser | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 97.47 yr (35601 d) |
| Aphelion | 3.5821 AU (535.87 Gm) |
| Perihelion | 1.60661 AU (240.345 Gm) |
| 2.59436 AU (388.111 Gm) | |
| Eccentricity | 0.38073 |
| 4.18 yr (1526.3 d) | |
|
Average orbital speed
|
17.81 km/s |
| 174.037° | |
| 0° 14m 9.096s / day | |
| Inclination | 18.926° |
| 34.496° | |
| 305.68° | |
| Earth MOID | 0.670978 AU (100.3769 Gm) |
| Jupiter MOID | 2.09239 AU (313.017 Gm) |
| Jupiter Tisserand parameter | 3.241 |
| Physical characteristics | |
| Dimensions | 11–25 km |
| Mass | 3.1×1016? kg |
|
Mean density
|
2.0? g/cm³ |
|
Equatorial surface gravity
|
0.0087? m/s² |
|
Equatorial escape velocity
|
0.0164? km/s |
| 7.3151 h (0.30480 d) | |
| Temperature | ~173 K |
| X | |
| 11.88 | |
475 Ocllo is a large Mars-crossing asteroid. It was discovered by American astronomer DeLisle Stewart on August 14, 1901, and assigned a provisional name of 1901 HN.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a period of 7.3151 ± 0.0002 hours and a brightness variation of 0.66 ± 0.04 in magnitude.
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