astro.wikisort.org - Asteroid

Search / Calendar

268 Adorea is a very large main belt asteroid, about 140 km in width.[2] It was discovered by A. Borrelly on 8 June 1887 in Marseilles. This asteroid is a member of the Themis family[3] and is classified as a primitive carbonaceous F-type/C-type asteroid. It is orbiting the Sun at a distance of 3.09 AU with an orbital eccentricity (ovalness) of 0.14 and a period of 5.44 yr. The orbital plane is tilted at an angle of 2.44° to the plane of the ecliptic.[1]

"Adorea" redirects here. For the insect genus, see Adorea (beetle).
268 Adorea
Discovery
Discovered byA. Borrelly
Discovery date8 June 1887
Designations
MPC designation
(268) Adorea
Pronunciation/əˈdɔːriə/
Named after
adorea liba (spelt cakes)
Alternative designations
A887 LA
Minor planet category
Main belt (Themis)
AdjectivesAdorean /əˈdɔːriən/
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc39,920 d (109.3 yr)
Aphelion3.515 AU (525.8 Gm)
Perihelion2.668 AU (399.2 Gm)
Semi-major axis
3.092 AU (462.5 Gm)
Eccentricity0.13689
Orbital period (sidereal)
5.44 yr (1,985.5 d)
Mean anomaly
302.257°
Mean motion
0° 10m 52.748s / day
Inclination2.44010°
Longitude of ascending node
120.914°
Argument of perihelion
69.5742°
Physical characteristics
Dimensions139.89±5.2 km[1]
140.31±3.34 km[2]
Mass(3.25±2.26)×1018 kg[2]
Mean density
2.24±1.56 g/cm3[2]
Synodic rotation period
7.80 h (0.325 d)
Geometric albedo
0.0440±0.003
Spectral type
FC
Absolute magnitude (H)
8.28

    From February 23 until March 2, 2006, photometric measurements were taken of the asteroid. These were used to produce a light curve showing a rotation period of 7.80±0.02 h with a brightness variation of 0.16±0.03 in magnitude. This result is consistent with some, but not all previous results. Some studies had suggested a longer rotation period of 15.959 h; double the time measured. However, the new data is inconsistent with the longer period.[4]

    In May 1979, 268 Adorea was positioned in proximity of the galaxy NGC 4517 and as a bright new light source it was identified as a potential supernova. However, the light was missing from a second photographic plate taken ten days later, and the source was soon identified as the asteroid.[5]

    The name refers to adorea liba, the Latin name for spelt cakes produced from meal and salt offered by the Romans as a sacrifice; the name was controversial among astronomers, as all previous asteroids had been named for humans or mythological figures.[6][7]


    References


    1. "268 Adorea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
    2. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73: 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009, S2CID 119226456. See Table 1.
    3. Florczak, M.; et al. (February 1999). "A spectroscopic study of the THEMIS family". Astronomy and Astrophysics Supplement. 134 (3): 463–471. Bibcode:1999A&AS..134..463F. doi:10.1051/aas:1999150.
    4. Stephens, Robert D. (December 2006). "Asteroid lightcurve photometry from Santana and GMARS observatories - winter and spring 2006". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 33 (4): 100–101. Bibcode:2006MPBu...33..100S.
    5. West, R. (September 1979). "The Supernova that Was'nt - 268 Adorea". The Messenger (18): 14. Bibcode:1979Msngr..18...14W.
    6. Schmadel, Lutz (5 August 2003). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 9783540002383 – via Google Books.
    7. "268 Adorea". markandrewholmes.com.



    На других языках

    [de] (268) Adorea

    (268) Adorea ist ein Asteroid des äußeren Asteroiden-Hauptgürtels, der am 8. Juni 1887 von Alphonse Borrelly am Observatorium von Marseille entdeckt wurde.
    - [en] 268 Adorea

    [es] (268) Adorea

    (268) Adorea es un asteroide que forma parte del cinturón de asteroides y fue descubierto por Alphonse Louis Nicolas Borrelly el 8 de junio de 1887 desde el observatorio de Marsella, Francia. Está nombrado por la adorea, un alimento sacrificial de la Antigua Roma.[2]

    [ru] (268) Адорея

    (268) Адорея (лат. Adorea) — крупный астероид главного пояса, который принадлежит к тёмному спектральному классу C. Астероид входит в состав семейства Фемиды, что означает, что он является фрагментом ещё более крупного астероида, разрушенного в результате столкновения, и чьи фрагменты и образовали само семейство. Он был открыт 8 июня 1887 года французским астрономом Альфонсом Борелли в обсерватории города Марселя и получил своё имя в честь лепёшки из муки и соли, которую древние римляне приносили в качестве жертвы своим богам[1].


    Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.

    Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.

    2019-2025
    WikiSort.org - проект по пересортировке и дополнению контента Википедии