astro.wikisort.org - Asteroid
37655 Illapa, provisional designation 1994 PM, is a carbonaceous asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.5 kilometers in diameter. It was discovered, on 1 August 1994, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California, United States.[1]
| Discovery [1] | |
|---|---|
| Discovered by | C. S. Shoemaker E. M. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 1 August 1994 |
| Designations | |
MPC designation | (37655) Illapa |
Named after | Illapa (Inca mythology)[1] |
Alternative designations | 1994 PM |
Minor planet category | NEO · Apollo · PHA [1] |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 7645 days (20.93 yr) |
| Aphelion | 2.5901 AU (387.47 Gm) |
| Perihelion | 0.36604 AU (54.759 Gm) |
Semi-major axis | 1.4780 AU (221.11 Gm) |
| Eccentricity | 0.75235 |
Orbital period (sidereal) | 1.80 yr (656.34 d) |
Mean anomaly | 299.48° |
Mean motion | 0° 32m 54.564s / day |
| Inclination | 18.002° |
Longitude of ascending node | 139.70° |
Argument of perihelion | 303.72° |
| Earth MOID | 0.0235523 AU (3.52337 Gm) |
| Physical characteristics | |
Mean diameter | 0.792–1.772 km (est.)[2] 1.5 km (generic at 0.057) |
Synodic rotation period | 2.6556 h[1] |
Spectral type | C [3] |
Absolute magnitude (H) | 17.9[1] |
Orbit and classification
On 16 August 2003, Illapa made a close approach to Earth of 0.025037 AU (3,750,000 km; 2,330,000 mi).[4]
Physical characteristics
Illapa has an estimated diameter of 0.8 to 1.8 kilometers for an assumed geometric albedo between 0.20 and 0.04.[2] For an assumed albedo of 0.057, which is typical for carbonaceous C-type asteroids, and an absolute magnitude of 17.9,[1] the asteroid has a calculated mean-diameter of 1.5 kilometers. The body has a short rotation period of 2.6556 hours.[1]
Naming
This minor planet was named after Illapa (Apu Illapu), the thunder or weather god from Inca mythology.[1]
References
- "JPL Small-Body Database Browser: 37655 Illapa (1994 PM)". Jet Propulsion Laboratory. Retrieved 12 April 2016.
- "( 37655) Illapa". The Near-Earth Asteroids Data Base at E.A.R.N. Archived from the original on 31 May 2012. Retrieved 21 June 2012.
- "Near-Earth Asteroid Surface Roughness Depends on Compositional Class". NASA/JPL Asteroid Radar Research. 17 July 2012. Archived from the original on 16 October 2011. Retrieved 23 July 2012.
- "JPL Close-Approach Data: 37655 Illapa (1994 PM)". Retrieved 21 June 2012.
External links
- 37655 Illapa at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 37655 Illapa at ESA–space situational awareness
- 37655 Illapa at the JPL Small-Body Database
На других языках
- [en] 37655 Illapa
[ru] (37655) Ильяпа
(37655) Ильяпа (лат. Illapa) — это околоземный астероид из группы аполлонов, характеризующийся сильно вытянутой орбитой, из-за которой в процессе своего движения вокруг Солнца он пересекает орбиты всех четырёх планет земной группы от Меркурия до Марса. Он был открыт 1 августа 1994 года американскими астрономами Кэролин Шумейкер и Юджином Шумейкером в Паломарской обсерватории и назван в честь одного из богов погоды мифологии инков, бога грома и молний Ильяпы.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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