astro.wikisort.org - AsteroidEucharis (minor planet designation: 181 Eucharis) is a large, slowly rotating main-belt asteroid that was discovered by French astronomer Pablo Cottenot on February 2, 1878, from Marseille Observatory.[5] It was his only asteroid discovery. This object was named after Eucharis, a Greek nymph.
181 Eucharis|
Discovered by | Pablo Cottenot |
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Discovery date | 2 February 1878 |
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MPC designation | (181) Eucharis |
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Pronunciation | [1] |
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Alternative designations | A906 GA |
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Minor planet category | Main belt |
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Epoch 31 July 2016 (JD 2457600.5) |
Uncertainty parameter 0 |
Observation arc | 123.63 yr (45157 d) |
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Aphelion | 3.7664 AU (563.45 Gm) |
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Perihelion | 2.49280 AU (372.918 Gm) |
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Semi-major axis | 3.12958 AU (468.179 Gm) |
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Eccentricity | 0.20347 |
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Orbital period (sidereal) | 5.54 yr (2022.2 d) |
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Average orbital speed | 16.64 km/s |
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Mean anomaly | 32.3207° |
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Mean motion | 0° 10m 40.879s / day |
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Inclination | 18.890° |
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Longitude of ascending node | 143.224° |
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Argument of perihelion | 318.943° |
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Earth MOID | 1.53686 AU (229.911 Gm) |
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Jupiter MOID | 1.47086 AU (220.038 Gm) |
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TJupiter | 3.099 |
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Dimensions | 106.66±2.2 km |
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Synodic rotation period | 52.23 h (2.176 d)[2][3] |
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Geometric albedo | 0.1135±0.0054 |
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Spectral type | S (Tholen) Xk (Bus)[4] |
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Absolute magnitude (H) | 7.84 |
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In the Tholen classification system, it is categorized as a stony S-type asteroid, while the Bus asteroid taxonomy system lists it as an Xk asteroid.[4] Photometric observations of this asteroid at the Goat Mountain Astronomical Research Station in Rancho Cucamonga, California during 2007 gave a light curve with a leisurely rotation period of 52.23 ± 0.05 hours.[3]
This object is the namesake of a family of 149–778 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[6]
References
- "eucharis". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- Yeomans, Donald K., "181 Eucharis", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Stephens, Robert D. (March 2008), "Long Period Asteroids Observed from GMARS and Santana Observatories", The Minor Planet Bulletin, vol. 35, no. 1, pp. 21–22, Bibcode:2008MPBu...35...21S.
- DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus, vol. 202, no. 1, pp. 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013. See appendix A.
- "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
- Novaković, Bojan; et al. (November 2011), "Families among high-inclination asteroids", Icarus, vol. 216, no. 1, pp. 69–81, arXiv:1108.3740, Bibcode:2011Icar..216...69N, doi:10.1016/j.icarus.2011.08.016.
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На других языках
[de] (181) Eucharis
(181) Eucharis ist ein Asteroid des äußeren Asteroiden-Hauptgürtels, der am 2. Februar 1878 von Pablo Cottenot entdeckt wurde. Benannt wurde der Himmelskörper nach Eucharis, einer Nymphe aus der griechischen Mythologie.
- [en] 181 Eucharis
[es] (181) Eucharis
(181) Eucharis es un asteroide que forma parte del cinturón de asteroides y fue descubierto por Pablo Cottenot desde el observatorio de Marsella, Francia, el 2 de febrero de 1878.
Está nombrado por Eucaris, un personaje de la mitología griega.[2]
[ru] (181) Эвхарида
(181) Эвхарида (др.-греч. Εύχαρις) — это довольно большой и яркий астероид главного пояса, принадлежащий к светлому спектральному классу S. Его характерной особенностью является очень низкая скорость вращения, сутки на этом астероиде длятся целых 52 часа 31,8 минут.
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