[citation needed], The name Flora was proposed by John Herschel, from Flora, the Latin goddess of flowers and gardens, wife of Zephyrus (the personification of the West wind), and mother of Spring. Flora can reach a magnitude of +7.9 at a favorable opposition near perihelion We created an initial Flora family and followed test asteroids 1 and 3 km in diameter using a numerical code that accounted for both planetary perturbations and nongravitational effects. 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. 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 … WikiMatrix. Some families (e.g. Aims. 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°. Evidence is presented indicating that the Flora family is of common origin. Objects in this region, when pushed onto planet-crossing orbits, tend to have relatively high probabilities of striking the Earth. the Vesta, Pallas, Hygiea, and Massalia families). Flora family – A prominent family of stony asteroids with an albedo of 0.24. en These concentrations are the asteroid families. 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 did not make it into the group during an analysis (e.g. [citation needed]. Differences in these orbital and physical properties suggest that the creation of the Flora family was more … 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. In some countries this may not be legally possible; if so: This page was last changed on 19 January 2021, at 02:36. 2002, Icarus, 157, 155-172; Bottke et al. [11] This mistake was uncovered only in 1995. The Flora asteroid family, which resides in the innermost region of the main asteroid belt, has been known for nearly a century. The Flora family is one of the asteroid families that were discovered early (Hirayama, 1918). Such cratering families typically consist of a single large body and a swarm of asteroids that are many times smaller. 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 among Flora family asteroids. The dynamical and physical properties of the Flora family are described in Section 2. The biggest member is 8 Flora, which mesures 140 km in diameter, and takes up about 80% of the total family mass. 2007, Nature, 449, 48-53). Whoa — that's a lot of relatives! es Estas concentraciones son las familias de asteroides. 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. It is the seventh brightest asteroid with a mean opposition magnitude of +8.7. There is also a scattered group of objects in the general vicinity of the Vesta family but not part of it. 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 [11][12], On 26 July 2013, Flora at magnitude 8.8 occulted the star 2UCAC 22807162 over parts of South America, Africa, and Asia.[13]. 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°. The Flora Family Foundation was established in 1998 by the family of William R. Hewlett (co-founder of the Hewlett-Packard Company) and his wife Flora Lamson Hewlett. Another study of rotational states in an asteroid family was performed by Kryszczynska (2013), who focused on the Flora´ family. [4] This gives an axial tilt of 78°, plus or minus ten degrees. The last remaining lost asteroid, 69230 Hermes, was recovered in 2003. Objects in this region, when pushed onto planet-crossing orbits, tend to have relatively high probabilities of striking the Earth. It is the seventh-brightest asteroid with a mean … She distinguished prograde and retrograde groups of as-teroidsandreportedan excessofprograderotators. We created an initial Flora family and followed test asteroids 1 and 3 km in diameter using a numerical code that accounted for both planetary perturbations and nongravitational effects. It is the seventh-brightest asteroid with a mean opposition magnitude of +8.7. 2007, Nature, 449, 48-53). The members of the families are thought to be fragments of past asteroid collisions. The Flora family, one of the largest with more than 800 known members, may have formed from a collision less than a billion years ago. About 4-5% of all main belt asteroids belong to this family. Binsel, Richard P.; Gehrels, Tom and Matthews, Mildred Shapley (editors); "JPL Small-Body Database Browser: 8 Flora", "AstDyS-2 Flora Synthetic Proper Orbital Elements", "Announcement of discovery of Flora", MNRAS, https://en.wikipedia.org/w/index.php?title=8_Flora&oldid=1000632173, Articles with dead external links from February 2019, Articles with permanently dead external links, Articles with dead external links from June 2017, Articles with unsourced statements from October 2020, Articles with unsourced statements from November 2008, Creative Commons Attribution-ShareAlike License, This page was last edited on 16 January 2021, at 00:14. 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. Ingrid is a member of the Flora family , a giant asteroid family and the largest family of stony asteroids. 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. 2002, Icarus, 157, 155-172; Bottke et al. young collisional family within the Koronis family was born Slivan & Molnar 2012). Flora's spectrum indicates that its surface composition is a mixture of silicate rock (including pyroxene and olivine) and nickel-iron metal. [8] Flora can reach a magnitude of +7.9 at a favorable opposition near perihelion, such as occurred in November 2007. The Flora family, being located near the inner edge of the main asteroid belt, is one of the largest asteroid families in … Curiously, our understanding of its properties has remained fairly murky even as our knowledge of the asteroid belt has increased. In 1918, the Japanese astronomer K. Hirayama first recognized some non random concentrations of asteroid elements. Formed from a catastrophic collision of a parent body larger than 150 km in diameter, the Flora family is located in the innermost part of the main belt near the {ν } 6 secular resonance. 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. These include: 809 Lundia — Orbits within the Flora family region; 956 Elisa; 1459 Magnya — Orbits in the outer asteroid belt, too far from Vesta to be genetically related. However, few have been found. Example sentences with "asteroid family", translation memory. 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. The Flora family is the asteroid family proposed by Hirayama in the last century, following the Koronis, Eos and Themis asteroid families 4, 5. Its location in the inner main belt makes their members available for photometric and spec-troscopic observations even for small telescopes. 951 Gaspra / ˈ ɡ æ s p r ə / is an S-type asteroid that orbits very close to the inner edge of the asteroid belt.Gaspra was discovered by Russian astronomer G. N. Neujmin in 1916. Our Flora family members reproduce the observed semimajor axis, eccentricity, and inclination distributions of the real family after to 1.4 Gyr. The spectra of the V-type asteroids, or vestoids, are similar to that of 4 Vesta, by far the largest asteroid in this class (hence the name). 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. 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. We can therefore conclude that the Flora subfamilies are probably of common origin but that if this family resulted from the dis ruption of a single parent body then either: (a) the shape of that body was far from spherical, or (b) if proto-Flora were spheri cal (D -v 210 km) then the present Flora family contains only approximately one-half the mass of the parent asteroid. 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 [citation needed]A large proportion have orbital elements similar to those of 4 Vesta, either close enough to be part of the Vesta family, or having similar eccentricities and inclinations but with … See the latest details. Asteroid families are believed to originate by catastrophic disruptions of large asteroids. It accounts for 15–20% of the main belt as- teroids with 2.1< a <2.5 AU. 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. For one thing, it's in an orbit shared by the Flora family of asteroids, which formed roughly 200 million years ago, so it's likely just a chip off this grouping's parent body. Stervormig families zichtbaar als afzonderlijke concentraties bij asteroïden uitgezet in de juiste baanelement ruimte ( … Download Citation | Photometry of 16 Flora family asteroids (Kryszczynska, 2013) | The files contain asteroid brightness and geometry for corresponding … This is because unrelated asteroids are hard to distinguish from family members because the family is of the same spectral type (S) that dominates the closer main belt overall. 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- … It is 2.3 times farther from … The influence of the Yarkovsky and YORP effects should be observable among objects in asteroid families, especially in the Flora family, which lies close to the Sun and consists of many small objects. Again, one of the largest families with more than 13.000 members, or about 3.5% of all main-belt asteroids. The few unrelated asteroids that have been found are all small (Florczak et al. 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 … 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). Orbit and classification. the Flora family) have complex intern… It's about 147 kilometers across — comparable in size to the state of Connecticut — and the largest asteroid in the inner main belt. That have been found are all small ( Florczak et al inspection of the family )... 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