astro.wikisort.org - Asteroid
Cyrene, minor planet designation 133 Cyrene, is a fairly large and very bright main-belt asteroid that was discovered by J. C. Watson on 16 August 1873 in Ann Arbor, Michigan, and named after Cyrene, a nymph, daughter of king Hypseus and beloved of Apollo in Greek mythology.[7] It is classified as an S-type asteroid based upon its spectrum. It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1 mean-motion resonance with Jupiter.[8]
| Discovery | |
|---|---|
| Discovered by | James Craig Watson |
| Discovery date | 16 August 1873 |
| Designations | |
MPC designation | (133) Cyrene |
| Pronunciation | /saɪˈriːniː/[1] |
Named after | Cyrene (mythology) |
Alternative designations | A873 QA; 1910 NB; 1936 HO; 1948 QC; 1959 UR |
Minor planet category | Main belt |
| Adjectives | Cyrenean /saɪrɪˈniːən/, Cyrenian /saɪˈriːniən/[2] |
| Orbital characteristics[3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 142.65 yr (52104 d) |
| Aphelion | 3.48274 AU (521.010 Gm) |
| Perihelion | 2.64706 AU (395.995 Gm) |
Semi-major axis | 3.06490 AU (458.503 Gm) |
| Eccentricity | 0.13633 |
Orbital period (sidereal) | 5.37 yr (1959.9 d) |
Average orbital speed | 17.03 km/s |
Mean anomaly | 316.166° |
Mean motion | 0° 11m 1.273s / day |
| Inclination | 7.21561° |
Longitude of ascending node | 319.066° |
Argument of perihelion | 289.646° |
| Earth MOID | 1.64415 AU (245.961 Gm) |
| Jupiter MOID | 1.65199 AU (247.134 Gm) |
| TJupiter | 3.206 |
| Physical characteristics | |
| Dimensions | 66.57±6.0 km |
| Mass | 3.1 × 1017 kg |
Mean density | 2.0? g/cm3 |
Equatorial surface gravity | 0.0186 m/s² |
Equatorial escape velocity | 0.0352 km/s |
Synodic rotation period | 12.708 h (0.5295 d)[3] 12.707 h (0.5295 d)[4] |
Geometric albedo | 0.2563±0.053[3] 0.2563[5] |
| Temperature | ~133 K |
Spectral type | S[5] |
Absolute magnitude (H) | 7.98,[3] 7.990[6] |
In the Tholen classification system, it is categorized as a stony SR-type asteroid.[9] Photometric observations of this asteroid at the Altimira Observatory in 1985 gave a light curve with a period of 12.707 ± 0.015 hours and a brightness variation of 0.22 in magnitude. This result matches previous measurements reported in 1984 and 2005.[4]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- "Cyrenean". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- Yeomans, Donald K., "133 Cyrene", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Buchheim, Robert K. (June 2006), "Photometry of asteroids 133 Cyrene, 454 Mathesis, 477 Italia, and 2264 Sabrina", Astronomy and Astrophysics Supplement Series, vol. 33, no. 2, pp. 29–30, Bibcode:2006MPBu...33...29B.
- Richmond, Michael (1 March 2001), "Asteroid Lightcurve Data File", Astronomy and Astrophysics Supplement Series, retrieved 29 March 2013.
- Pravec, P.; et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan, no. 1667, Bibcode:2012LPICo1667.6089P.
- Schmadel, Lutz D.; International Astronomical Union (2003), Dictionary of minor planet names, Berlin; New York: Springer-Verlag, p. 27, ISBN 978-3-540-00238-3.
- McDonald, Sophia Levy (June 1948), "General perturbations and mean elements, with representations of 35 minor planets of the Hecuba group", Astronomical Journal, vol. 53, p. 199, Bibcode:1948AJ.....53..199M, doi:10.1086/106097.
- 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
- 133 Cyrene at AstDyS-2, Asteroids—Dynamic Site
- 133 Cyrene at the JPL Small-Body Database
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На других языках
[de] (133) Cyrene
(133) Cyrene ist ein Asteroid des äußeren Asteroiden-Hauptgürtels, der am 16. August 1873 von James Craig Watson entdeckt wurde.- [en] 133 Cyrene
[es] (133) Cyrene
(133) Cyrene es un asteroide perteneciente al cinturón de asteroides descubierto por James Craig Watson desde el observatorio Detroit de Ann Arbor, Estados Unidos, el 16 de agosto de 1873. Está nombrado por Cirene, un personaje de la mitología griega.[2][ru] (133) Кирена
(133) Кирена (лат. Cyrene) — астероид главного пояса, принадлежащий к светлому спектральному классу S. Он был открыт 16 августа 1873 года американским астрономом Дж. К. Уотсоном в Энн-Арбор, США и назван в честь Кирены, дочери царя Гипсея и возлюбленной Аполлона, согласно древнегреческой мифологии[1].Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
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