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There matters might have stood had it not been for the fact that that object was located at the heliocentric distance predicted by Bode's law of.
Contents.History Discovery Eros was discovered on 13 August 1898 by at and at. Witt was taking a 2-hour exposure of to secure astrometric positions of asteroid. Later studies During the opposition of 1900–1901, a worldwide program was launched to make measurements of Eros to determine the (or distance to the Sun), with the results published in 1910 by of.
A similar program was then carried out, during a closer approach, in 1930–1931. The value of the (roughly the Earth-Sun distance) obtained by this program was considered definitive until 1968, when and methods started producing more precise measurements.Eros was the first asteroid detected by the 's radar system.Eros was one of the first asteroids visited by a spacecraft, the first one orbited, and the first one soft-landed on. Spacecraft entered orbit around Eros in 2000, and landed in 2001.Mars-crosser Eros is a, the first known to come within the orbit of. Objects in such an orbit can remain there for only a few hundred million years before the orbit is by gravitational interactions. Dynamical integrations suggest that Eros may evolve into an within as short an interval as two million years, and has a roughly 50% chance of doing so over a time scale of 10 8–10 9 years. It is a potential Earth, about five times larger than the impactor that created and led to the. Name Eros is named after the of,.
It is pronounced or sometimes. The rarely used adjectival form of the name is Erotian. NEAR Shoemaker. Animation of 's trajectory around 433 Eros from 1 April 2000 to 12 February 2001 433 ErosThe probe visited Eros twice, first with a 1998, and then by orbiting it in 2000 when it extensively photographed its surface. On 12 February 2001, at the end of its mission, it landed on the asteroid's surface using its maneuvering jets.This was the first time a Near Earth asteroid was closely visited by a spacecraft. Physical characteristics depends on the distance from a spot on the surface to the center of a body's mass. Eros's surface gravity varies greatly because Eros is not a sphere but an elongated peanut-shaped (or potato- or shoe-shaped) object.
The daytime temperature on Eros can reach about 100 °C (373 K) at. Nighttime measurements fall near −150 °C (123 K). Eros's density is 2.67, about the same as the density of Earth's crust. It rotates once every 5.27 hours.NEAR scientists have found that most of the larger rocks strewn across Eros were ejected from a single in an impact approximately 1 billion years ago. (The crater involved was proposed to be named 'Shoemaker', but is not recognized as such by the (IAU), and has been formally designated Charlois Regio.) This event may also be responsible for the 40 percent of the Erotian surface that is devoid of craters smaller than 0.5 kilometers across.
It was originally thought that the debris thrown up by the collision filled in the smaller craters. An analysis of crater densities over the surface indicates that the areas with lower crater density are within 9 kilometers of the impact point. Some of the lower density areas were found on the opposite side of the asteroid but still within 9 kilometers.It is theorized that shockwaves propagate through the asteroid, shaking smaller craters into rubble. Since Eros is irregularly shaped, parts of the surface antipodal to the point of impact can be within 9 kilometres of the impact point (measured in a straight line through the asteroid) even though some intervening parts of the surface are more than 9 kilometres away in straight-line distance. Path in sky during opposition 2011/2012On 31 January 2012, Eros passed Earth at 0.17867 (26,729,000; 16,608,000 ), about 70 times the, with a of +8.1. During rare oppositions, every 81 years, such as in 1975 and 2056, Eros can reach a magnitude of +7.0, which is brighter than and brighter than any except, and, rarely,.
Under this condition, the asteroid actually appears to stop, but unlike the normal condition for a body in heliocentric conjunction with Earth, its motion is very small. For example, in January and February 2137, it moves retrograde only 34 minutes in right ascension. This article's use of may not follow Wikipedia's policies or guidelines.
Please by removing or external links, and converting useful links where appropriate into. ( October 2018) Wikimedia Commons has media related to. (OrbDev's attempts at litigation over their property claim). (requires WebGL). showing distance and magnitude Ephemerides for Eros during rare oppositions.
In relation to the K-T extinction. Notations as to historical archived work on asteroid 433 Eros. (Royal Astronomical Society of New Zealand).
and from the. at NeoDyS-2, Near Earth Objects—Dynamic Site. at AstDyS-2, Asteroids—Dynamic Site. at the.
The asteroid Eros.Photo by the NEAR Shoemaker spacecraft.Source: NASA/JPL/JHUAPL What is an asteroid?An asteroid is a chunk of and in outer space that is in orbit around the Sun. Asteroids vary in size from just a few feet across to hundreds of miles in diameter.Most asteroids are not round, but are lumpy and shaped like a potato.
As they orbit the Sun, they tumble and spin.Types of AsteroidsThere are three main types of asteroids based on what type of elements make up the asteroid. The main types include carbon, stony, and metallic. Carbon - Carbon asteroids are also called carbonaceous asteroids.
They are made up mostly of rocks rich in the element. They are very dark in color. Around 75% of all asteroids are the carbon type. Stony - Stony asteroids are also called silicaceous asteroids. They are made up of mostly rock and some metal. Metallic - Metallic asteroids are made up of mostly metals, primarily and nickel.
They often have some small amounts of stone mixed in.Asteroid BeltThe majority of asteroids orbit the Sun in a ring called the asteroid belt. The asteroid belt is located between the planets Mars and Jupiter. You can think of it as a belt between the rocky planets and the gas planets. There are millions and millions of asteroids in the asteroid belt.Largest AsteroidsSome asteroids are so large that they are considered minor planets.
The four largest asteroids are Ceres, Vesta, Pallas, and Hygiea. Ceres - Ceres is by far the largest asteroid.
![Asteroids Facts Asteroids Facts](/uploads/1/2/6/3/126329203/357296751.jpg)
It is so big that it is categorized as a dwarf planet. Ceres is 597 miles in diameter and contains around one third of the total mass of the asteroid belt. It is named after the Roman goddess of the harvest. Vesta - Vesta has a diameter of 329 miles and is considered a minor planet. Vesta is more massive than Pallas, but slightly smaller in size. It is the brightest asteroid when viewed from Earth and was named after the Roman goddess of the home.
Pallas - Pallas was the second asteroid to be discovered after Ceres. It is the largest body in the Solar System which is not round.
It is named after the Greek goddess. Hygiea - Hygiea is the largest of the carbon type asteroids. It is named after the Greek goddess of health. It is roughly 220 miles wide by 310 miles long. Several asteroids compared by size includingCeres (the largest asteroid) and VestaSource: NASA, ESA, STScITrojan AsteroidsThere are other groups of asteroids outside the asteroid belt.
One major group is the Trojan asteroids. Trojan asteroids share an orbit with a planet or a moon. However, they don't collide with the planet.
The majority of the Trojan asteroids orbit the sun with Jupiter. Some scientists think there may be as many Trojan asteroids as there are asteroids in the belt.Could an asteroid hit Earth?Yes, not only could an asteroid hit Earth, but many asteroids have already struck Earth. These asteroids are called Near-Earth asteroids and they have orbits that cause them to pass close to the Earth. It is estimated that an asteroid larger than 10 feet across strikes the Earth around once a year.
These asteroids usually explode when they hit the Earth's atmosphere and cause little damage on the Earth's surface.Interesting Facts about Asteroids. Italian astronomer Giuseppe Piazzi discovered the first asteroid, Ceres, in 1801. The word asteroid comes from a Greek word meaning 'star shaped.' . Scientists estimate that there are over one million asteroids larger than 1km in diameter within the asteroid belt.
The five largest asteroids make up more than 50% of the total mass of the asteroid belt. Some scientists have theorized that the extinction of the was caused by a large asteroid colliding with the Earth.
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