astro.wikisort.org - AsteroidAlthaea (minor planet designation: 119 Althaea) is a main-belt asteroid that was discovered by Canadian-American astronomer J. C. Watson on April 3, 1872,[3] and named after Althaea, the mother of Meleager in Greek mythology. Two occultations by Althaea were observed in 2002, only a month apart.
Main-belt asteroid
119 Althaea A three-dimensional model of 119 Althaea based on its light curve. |
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Discovered by | James Craig Watson |
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Discovery date | 3 April 1872 |
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MPC designation | (119) Althaea |
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Pronunciation | [1] |
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Named after | Althaea |
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Alternative designations | A872 GA; 1972 KO |
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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 | 143.99 yr (52593 d) |
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Aphelion | 2.7896 AU (417.32 Gm) |
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Perihelion | 2.37335 AU (355.048 Gm) |
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Semi-major axis | 2.58147 AU (386.182 Gm) |
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Eccentricity | 0.080623 |
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Orbital period (sidereal) | 4.15 yr (1515.0 d) |
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Average orbital speed | 18.51 km/s |
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Mean anomaly | 114.868° |
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Mean motion | 0° 14m 15.472s / day |
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Inclination | 5.7831° |
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Longitude of ascending node | 203.674° |
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Argument of perihelion | 170.021° |
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Earth MOID | 1.37297 AU (205.393 Gm) |
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Jupiter MOID | 2.58409 AU (386.574 Gm) |
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TJupiter | 3.413 |
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Dimensions | 57.30±1.1 km |
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Mass | 2.0×1017 kg |
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Equatorial surface gravity | 0.0160 m/s2 |
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Equatorial escape velocity | 0.0303 km/s |
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Synodic rotation period | 11.484 h (0.4785 d)[2][3] |
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Geometric albedo | 0.2306±0.010 |
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Temperature | ~173 K |
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Spectral type | S |
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Absolute magnitude (H) | 8.42 |
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Based upon its spectrum, this is classified as an S-type asteroid.[4] Photometric observations made in 1988 at the Félix Aguilar Observatory produced a light curve with a period of 11.484 ± 0.010 hours with a brightness variation of 0.365 ± 0.010 in magnitude.[3]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "119 Althaea", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Hutton, R. G. (June 1990), "V+B Photoelectric Photometry of Asteroid 119 Althaea", The Minor Planet Bulletin, vol. 17, pp. 15–17, Bibcode:1990MPBu...17...15H.
- 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.
External links
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На других языках
[de] (119) Althaea
(119) Althaea ist ein Asteroid des Hauptgürtels, der am 3. April 1872 von dem US-amerikanischen Astronom James Craig Watson entdeckt wurde.
- [en] 119 Althaea
[es] (119) Althaea
(119) Althaea es un asteroide que forma parte del cinturón de asteroides y fue descubierto el 3 de abril de 1872 por James Craig Watson desde el observatorio Detroit de Ann Arbor, Estados Unidos.
Está nombrado por Altea, un personaje de la mitología griega.[2]
[ru] (119) Алфея
(119) Алфея (др.-греч. Ἀλθαία) — типичный астероид главного пояса, принадлежащий к светлому спектральному классу S. Он был обнаружен 3 апреля 1872 года американским астрономом Дж. К. Уотсоном в Энн-Арбор, США и назван в честь Алфеи, героини древнегреческой мифологии[1].
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