Analysis of the rock suggests it was apparently exposed to cosmic rays for only about 1.2 million years, unusually short for rocks originating in the Flora family. It is the innermost large asteroid: no asteroid closer to the Sun has a diameter above 25 kilometres or two-elevenths that of Flora itself, and not until the tiny 149 Medusa was discovered was a single asteroid orbiting at a closer mean distance known. Jenniskens speculates the Chelyabinsk rock belonged to a larger "rubble pile" asteroid that broke apart 1.2 million years ago, possibly after a close encounter with Earth's gravitational pull. James Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity.". From Simple English Wikipedia, the free encyclopedia, Asteroid Families: Search of a 12,487-Asteroid Sample Using Two Different Clustering Techniques, https://simple.wikipedia.org/w/index.php?title=Flora_family&oldid=7289192, Articles with unsourced statements from February 2007, Creative Commons Attribution/Share-Alike License. Because of its poorly defined edges, and the location of Flora itself near the edge, this asteroid group has also sometimes been called the Ariadne family, when Flora … The Flora asteroid family members defined by the LCDB are distributed in the semi-major axis interval of a ∈ [2.15, 2.35] au (as shown in Fig. She distinguished prograde and retrograde groups of as-teroidsandreportedan excessofprograderotators. Whoa — that's a lot of relatives! Objects in this region, when pushed onto planet-crossing orbits, tend to have relatively high probabilities of striking the Earth. But P/2013 P5 probably isn't a comet. The purpose of the Foundation is to promote the well-being of people everywhere by supporting selected activities of charitable organizations and institutions as determined by members of the Board and Family … Example sentences with "asteroid family", translation memory. Though di use, the family associated with asteroid (8) Flora dominates the inner main belt in terms of the extent of its members in orbital parameter space, result- … Asteroid 8 Flora. Because of the high background density of asteroids in this part of space, one might expect that a great number of asteroids unrelated to the collision that made the family would be present. Though di use, the family associated with asteroid (8) Flora dominates the inner main belt in terms of the extent of its members in orbital parameter space, result- … The Flora family is the asteroid family proposed by Hirayama in the last century, following the Koronis, Eos and Themis asteroid families 4, 5. Curiously, our understanding of its properties has remained fairly murky even as our knowledge of the asteroid belt has increased. Earlier work by Bill Bottke, a planetary scientist at the Southwest Research Institute, has fingered one such asteroid family as the birthplace of the dinosaur-killer and accused another, the Flora family, of causing impacts on Earth perhaps a billion years ago. Objects in this region, when pushed onto planet-crossing orbits, tend to have relatively high probabilities of striking the Earth. [7] It is the seventh-brightest asteroid with a mean opposition magnitude of +8.7. NESVORNY SYNTHETIC FAMILY NAME * The name of the asteroid family in the Nesvorny family analysis based on synthetic proper elements. This makes sense because it's the largest member of the Flora family, a group of more than 13,000 asteroids that share similar orbits. Asteroid 8 Flora will be well placed, lying in the constellation Cetus, well above the horizon for much of the night.. Its location in the inner main belt makes their members available for photometric and spec-troscopic observations even for small telescopes. 8 Flora is a big, bright, main belt asteroid.It is the closest big asteroid: no asteroid closer to the Sun has a diameter above 25 kilometres or two-elevenths that of Flora itself, and not until the tiny 149 Medusa was found was a single asteroid orbiting at a closer mean distance known. All the members of the Flora family probably came from the breakup of a single parent body; however, other asteroids in this region with similar orbital characteristics appear to have different origins. Orbit and classification. The Flora family is a collection of asteroids near the inner edge of the asteroid belt whose orbits have semimajor axes of 2.12 to 2.25 AU and mean inclinations of about 5°. About 4-5% of all main belt asteroids belong to this family. Minor planet numbers are also given to objects of the Kuiper belt, which is similar to the asteroid belt but farther out around 30–60 AU, whereas asteroids are mostly between 2–3 AU from the Sun and at the orbit of Jupiter 5 AU from the Sun. Indeed, they are generally nearly constant on a 10 7 -10 ⁸-year time scale. en These concentrations are the asteroid families. It is 2.3 times farther from … add example. Formally known as 1979 MB4, this is a 2km-wide asteroid of the Flora family in the asteroid belt’s inner region. Download Citation | Photometry of 16 Flora family asteroids (Kryszczynska, 2013) | The files contain asteroid brightness and geometry for corresponding … The Greek equivalent is Chloris, who has her own asteroid, 410 Chloris, but in Greek Flora is also called Chloris (8 Χλωρίς). [9], Flora was discovered by J. R. Hind on 18 October 1847. The family name is based on the name or provisional designation of the largest member of the family. Flora Asteroids: 951 Gaspra, 8 Flora, Flora Family, 43 Ariadne, 9913 Humperdinck, 291 Alice, (9928) 1981 We9, 4065 Meinel, 281 Lucretia: Books, LLC, Books, LLC: Amazon.nl The few unrelated asteroids that have been found are all small (Florczak et al. It is the seventh brightest asteroid with a mean opposition magnitude of +8.7. [citation needed]. This splitting The biggest member is 8 Flora, which mesures 140 km in diameter, and takes up about 80% of the total family mass. es Estas concentraciones son las familias de asteroides. [10] This meteorite type comprises about 38% of all meteorites impacting the Earth. It's about 147 kilometers across — comparable in size to the state of Connecticut — and the largest asteroid in the inner main belt. The Flora asteroid family, which resides in the innermost region of the main asteroid belt, has been known for nearly a century. Methods. This page was last changed on 19 January 2021, at 02:36. The Flora family of asteroids is a big group of S-type asteroids in the closer part of the main belt, whose origin and properties are not well understood right now.About 4-5% of all main belt asteroids belong to this family. Curiously, our understanding of its properties has remained fairly murky even as our knowledge of the asteroid belt has increased. Planetoïdenfamilie - Asteroid family. 1), a little narrower than the values adopted by the other studies.Considered that other asteroid families may exist around the region where the Flora family resides, in the condition that a sufficient number of sample members … The largest among them is associated with (8) Flora. It is the seventh brightest asteroid with a mean opposition magnitude of +8.7. Approximately 6% of main-belt asteroids are vestoids. Again, one of the largest families with more than 13.000 members, or about 3.5% of all main-belt asteroids. [11] This mistake was uncovered only in 1995. Asteroid 8 Flora is currently in the constellation of Cetus.The current Right Ascension of Asteroid 8 Flora is 02h 39m 46s and the Declination is +10° 16’ 14” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom []).The current magnitude of Asteroid 8 Flora is 9.79 (JPL). 2007), 1514 Ricouxa, and 1682 Karel in the … Asteroid families are believed to originate by catastrophic disruptions of large asteroids. These factors suggest that Flora may be a primary source of … 2156 Kate, identified by one of the clustering method and dif- Three additional, already known spin vectors for 951 Gaspra ferent than S taxonomic type, which are probable interlopers in (all determinations collected at the Poznan Observatory web- the Flora family, were also excluded, because asteroid families site, Kryszczynska et al. This family has a lot of members and is dynamically dispersed in eccentric-ity and inclination. The Flora family of asteroids is a large grouping of S-type asteroids in the inner main belt, whose origin and properties are relatively poorly understood at present.Roughly 4-5% of all main belt asteroids belong to this family. The dynamical and physical properties of the Flora family are described in Section 2. Flora's the largest, inner main belt asteroid with a diameter of about 91 miles (147 km) or about the size of Connecticut. Nevertheless, the parent body was almost for sure destroyed by the impact/s that made the family, and Flora is probably a gravitational aggregate of most of the pieces.[source?] Lightcurve analysis indicates that Flora's pole points towards ecliptic coordinates (β, λ) = (16°, 160°) with a 10° uncertainty. It is the seventh-brightest asteroid with a mean … Especially, the orbit and spin characteristics can reflect the influences of the Yarkovsky effect and the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect on the evolution of the asteroid family, respectively. The distribution of proper elements and physical properties of Flora-family asteroids are compared with those of families believed to have formed from the catastrophic disruption of parent bodies. Regardless of your location on the Earth, 8 Flora will reach its highest point in the sky around midnight local time. In recent years, the distribution of orbital elements within an asteroid family has been shown to be affected both by the Yarkovsky effect and by passage across weak planetary resonances (e.g., Nesvorny et al. The Flora family of asteroids is a big group of S-type asteroids in the closer part of the main belt, whose origin and properties are not well understood right now. Request PDF | On Jan 1, 2008, A. Kryszczynska and others published Physical Investigations of the Flora Family Asteroids | Find, read and cite all the research you need on ResearchGate About 4-5% of all main belt asteroids belong to this family. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 5 months (1,237 days). In many or most cases the parent body was shattered, but there are also several families which resulted from a large cratering event which did not disrupt the parent body (e.g. An asteroid family is a group of minor planets that share similar orbital elements, such as semimajor axis, eccentricity, and orbital inclination. Jenniskens calculated the Chelyabinsk object may have come from the Flora asteroid family in the inner asteroid belt. Forming the Flora Family: Implications for the Near-Earth Asteroid Population and Large Terrestrial Planet Impactors 2017, AJ, 153 , 172 Vokrouhlicky, D., and 12 colleagues: The Flora family of asteroids is a big group of S-type asteroids in the closer part of the main belt, whose origin and properties are not well understood right now.About 4-5% of all main belt asteroids belong to this family. Flora, and the whole Flora family generally, are good candidates for being the parent bodies of the L chondrite meteorites. It is a remnant from a collisional disruption of a large body or bodies that occurred hundreds of My to a few Gy ago (the age of the family was approximated by several authors, for example In the 1968 science-fiction film The Green Slime, an orbital perturbation propels the asteroid Flora into a collision course with Earth. Flora was discovered in 1847 and named for the Latin goddess of gardens and flowers. Flora asteroid family: Number of members ~ 819, Largest member: 8 Flora, 136km, Average distance from Sun: 2.169 -2.211 AU's. Several new studies on the Feb. 15 meteor explosion over Chelyabinsk, Russia, has revealed a much higher asteroid risk to Earth than previously thought, scientists say. This means that it is probably a piece from an asteroid collision that occurred roughly 200 million years ago. This is a shape model of Flora computed using light curve inversion techniques. 1998, and also by inspection of the PDS asteroid taxonomy data set for non S-type members.) Flora family – A prominent family of stony asteroids with an albedo of 0.24. During an observation on 25 March 1917, 8 Flora was mistaken for the 15th-magnitude star TU Leonis, which led to that star's classification as a U Geminorum cataclysmic variable star. [4] This gives an axial tilt of 78°, plus or minus ten degrees. It is the seventh-brightest asteroid with a mean opposition magnitude of +8.7. 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