34 Sentences With "Trojan asteroid" | Random Sentence Generator

So the chances of BZ colliding with another Trojan asteroid are small.

And Earth has one known Trojan asteroid, a rock that stays with a planet, leading or trailing its annual march.

Lucy will make a stop at its main belt target in 2025 and then start studying its first Trojan asteroid in 2027, eventually ending its mission in 2033.

The Trojan asteroid has been assumed to be a carbonaceous C-type asteroid.

This trojan asteroid has been characterized as a dark C-type and D-type asteroid.

617 Patroclus, another large trojan asteroid located in the , is composed of two almost equal-sized components.

JAXA Sail to Jupiter's Trojan Asteroids. Paul Gilster, Centauri Dreams. 15 March 2017. and possibly return Trojan asteroid samples to Earth in the 2050s.

The Japanese space agency has proposed the OKEANOS solar sail for the late 2020s to either analyse a Trojan asteroid in situ or to perform a sample-return mission.

Sagamihara, Kanagawa, Japan. Then, it was proposed to be carried to Jupiter by the Jupiter and Trojan Asteroid Explorer (Trojan Asteroid Explorer). The discussion for the international collaboration for a Jupiter mission between ESA and Japan (JAXA) started in 2006. By 2007, the orbiter was proposed for a lift-off in 2020 together with ESA's Jupiter Ganymede Orbiter (JGO) from which it would undock upon its arrival at Jupiter in 2025/2026.

Jun Matsumoto, Jun Aoki, Yuske Oki, Hajime Yano. 2015. The OKEANOS Jupiter Trojan Asteroid Explorer was a finalist for Japan's ISAS 2nd Large-class mission to be launched in the late 2020s. However, it was not selected.

Asteroids in the and Sun–Mars Lagrangian points are sometimes called Mars trojans, with a lower-case t, as "Trojan asteroid" was originally defined as a term for Lagrangian asteroids of Jupiter. They may also be called Mars Lagrangian asteroids.

Recent calculations indicate that it is a stable Mars trojan asteroid with a libration period of 1350 yr and an amplitude of 14°. These values as well as its short-term orbital evolution are similar to those of 5261 Eureka or .

Jun Matsumoto, Jun Aoki, Yuske Oki, Hajime Yano. 2015. OKEANOS was a finalist for Japan's ISAS 2nd Large-class mission to be launched in 2026,Trajectory Design for Jovian Trojan Asteroid Exploration via Solar Power Sail (PDF). Takanao Saiki, Osam Mori. The Institute of Space and Astronautical Science (ISAS), JAXA. 2017.

The ion engine intended for the mission was called μ10 HIsp. It was planned to have a specific impulse of 10,000 s, power of 2.5 kW, and a maximum thrust magnitude of 27 mN for each of the four engines.Lineup of Microwave Discharge Ion Engines. JAXA.Mission Analysis of Sample Return from Jovian Trojan Asteroid by Solar Power Sail (PDF).

Wide-field Infrared Survey Explorer (WISE, observatory code C51) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation mode in February 2011. It was re-activated in 2013. WISE discovered thousands of minor planets and numerous star clusters. Its observations also supported the discovery of the first Y Dwarf and Earth trojan asteroid.

Connors received a PhD in Physics from the University of Alberta in 1998. He is the Assistant Professor at Athabasca University. He tutors and develops courses in Mathematics, Physics, and Astronomy. He was part of the team credited with the discovery of the first Earth trojan asteroid, an asteroid that orbits the Sun on a similar orbital path as that of Earth.

He discovered or co-discovered thirteen comets. Among these were the periodic comets 18D/Perrine–Mrkos, 45P/Honda–Mrkos–Pajdušáková, 124P/Mrkos and 143P/Kowal–Mrkos. He also discovered the bright non-periodic comet C/1957 P1 (or, in the nomenclature of the time, comet 1957d). He discovered a number of asteroids (273 in total), including the Amor asteroid 5797 Bivoj and Trojan asteroid 3451 Mentor.

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the Trojan asteroid measures 49.25 kilometers in diameter and its surface has a low albedo of 0.061, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroid of 0.057 and calculates a diameter of 48.48 kilometers based on an absolute magnitude of 10.3.

3709 Polypoites is a large Jupiter trojan from the Greek camp, approximately in diameter. The Trojan asteroid was discovered on 14 October 1985, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California, United States, and named after Polypoites from Greek mythology. The dark D-type asteroid belongs to the 50 largest Jupiter trojans. It has a rotation period of 10 hours and possibly a spherical shape.

Chernykh was born in the Russian city of Usman in Voronezh Oblast, in present-day Lipetsk Oblast. He specialized in astrometry and the dynamics of small bodies in the Solar System and worked at the Crimean Astrophysical Observatory from 1963. Chernykh discovered two periodic comets 74P/Smirnova–Chernykh and 101P/Chernykh. He also discovered a very large number of asteroids, including notably 2867 Šteins and the Trojan asteroid 2207 Antenor.

Tracy Caldwell Dyson viewing Earth from the ISS Cupola, 2010 Earth has at least five co-orbital asteroids, including 3753 Cruithne and . A trojan asteroid companion, , is librating around the leading Lagrange triangular point, L4, in Earth's orbit around the Sun. The tiny near-Earth asteroid makes close approaches to the Earth–Moon system roughly every twenty years. During these approaches, it can orbit Earth for brief periods of time.

Among his many discoveries was 588 Achilles (the first Trojan asteroid) in 1906, as well as two other Trojans: 659 Nestor and 884 Priamus. He also discovered 887 Alinda in 1918, which is now recognized as an Earth-crossing Amor asteroid (or sometimes classified as the namesake of its own Alinda family). Wolf's then-record number of discoveries was surpassed by his pupil Karl Wilhelm Reinmuth on 24 July 1933.

The orbit of this Trojan asteroid is unstable. It is orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60° ahead of its orbit (see Trojans in astronomy). It orbits the Sun at a distance of 5.1–5.2 AU once every 11 years and 9 months (4,283 days; semi-major axis of 5.16 AU). Its orbit has an eccentricity of 0.01 and an inclination of 8° with respect to the ecliptic.

By October 2010, over 33,500 new asteroids and comets were discovered, and nearly 154,000 Solar System objects were observed by WISE. Discovery of an ultra-cool brown dwarf, WISEPC J045853.90+643451.9, about 10 to 30 light years away from Earth, was announced in late 2010 based on early data. In July 2011 it was announced that WISE had discovered the first Earth trojan asteroid, . Also, the third-closest star system, Luhman 16.

Jean Meeus suspected that was a Mars Trojan, and this was confirmed by Reiner Stoss's analysis of two sets of observations dating from 1998 on the MPC database. It was confirmed to be a Mars Trojan numerically in 2012. Recent calculations confirm that it is a stable Mars Trojan asteroid with a libration period of 1310 years and an amplitude of 14°. These values as well as its short-term orbital evolution are similar to those of 5261 Eureka.

In a jointly credited trio with Tom Gehrels and Ingrid, he was an extremely prolific discoverer of many thousands of asteroids.Schmidt, Bernhard (1879-1935) Gehrels did a sky survey using the 48-inch Schmidt telescope at Palomar Observatory and shipped the plates to the van Houtens at Leiden Observatory, who analyzed them for new asteroids. The trio are jointly credited with several thousand discoveries. When the orbit of an asteroid is determined, it can be classified as an Apollo asteroid, an Amor asteroid or a Trojan asteroid.

OKEANOS (Oversize Kite-craft for Exploration and Astronautics in the Outer Solar System) was a proposed mission concept to Trojan asteroids, which share Jupiter's orbit, using a hybrid solar sail for propulsion; the sail was planned to be covered with thin solar panels to power an ion engine. In-situ analysis of the collected samples would have been performed by either direct contact or using a lander carrying a high-resolution mass spectrometer. A sample-return to Earth was an option under study.Sampling Scenario for the Trojan Asteroid Exploration Mission (PDF).

OKEANOS (Outsized Kite-craft for Exploration and Astronautics in the Outer Solar System) was a proposed mission concept by Japan's JAXA to Jupiter's Trojan asteroids using a hybrid solar sail for propulsion; the sail would have been covered with thin solar panels to power an ion engine. In-situ analysis of the collected samples would have been performed by either direct contact or using a lander carrying a high- resolution mass spectrometer. A lander and a sample-return to Earth were options under study.Sampling Scenario for the Trojan Asteroid Exploration Mission (PDF).

SCIENCE AND EXPLORATION IN THE SOLAR POWER SAIL OKEANOS MISSION TO A JUPITER TROJAN ASTEROID. (PDF). T. Okada, T. Iwata, J. Matsumoto, T. Chujo, Y. Kebukawa, J. Aoki, Y. Kawai, S. Yokota, Y. Saito, K. Terada, M. Toyoda, M. Ito, H. Yabuta, H. Yurimoto, C. Okamoto, S. Matsuura, K. Tsumura, D. Yonetoku, T. Mihara, A. Matsuoka, R. Nomura, H. Yano, T. Hirai, R. Nakamura, S. Ulamec, R. Jaumann, J.-P. Bibring, N. Grand, C. Szopa, E. Palomba, J. Helbert, A. Herique, M. Grott, H. U. Auster, G. Klingelhoefer, T. Saiki, H. Kato, O. Mori, J. Kawaguchi. 49th Lunar and Planetary Science Conference 2018 (LPI Contrib.

In 2012, an international collaboration revisited the WISE, IRAS and Akari observational data. As already suggested by the body's high brightness amplitude, the astronomers found that Anchises is significantly elongated, with best-fit dimensions of , which corresponds to a mean diameter of kilometers. Due to a small phase coefficient and a lack of any noticeable opposition effect, astronomers at Cerro Tololo concluded that this Jupiter trojan asteroid possesses an unusually smooth surface texture – far less rough than the great majority of asteroids. In case the surface of Anchises consist of bare rock, with high thermal inertia, the body's true diameter could be significantly greater than the estimated 136 kilometers, the study concludes.

Andrea Boattini and the survey accidentally rediscovered 206P/Barnard-Boattini, a lost comet, on 7 October 2008. The comet has made 20 revolutions since 1892 and passed within 0.3–0.4 AU of Jupiter in 1922, 1934 and 2005.IAUC 8995The COCD Homepage This comet was also the first comet to be discovered by photographic means, by the American astronomer Edward Emerson Barnard, who did so on the night of 13 October 1892.206P at Garry Kronk’s Cometography On 12 January 2008, Mount Lemmon Survey discovered 2008 AO112 at an apparent magnitude of 21 using a reflecting telescope. was discovered by the Mount Lemmon Survey on 27 September 2009 and it is a stable Mars trojan asteroid.

One suggested pathway for the Big Splash as viewed from the direction of the south pole (not to scale). In 2004, Princeton University mathematician Edward Belbruno and astrophysicist J. Richard Gott III proposed that Theia coalesced at the or Lagrangian point relative to Earth (in about the same orbit and about 60° ahead or behind), similar to a trojan asteroid. Two-dimensional computer models suggest that the stability of Theia's proposed trojan orbit would have been affected when its growing mass exceeded a threshold of approximately 10% of the Earth's mass (the mass of Mars). In this scenario, gravitational perturbations by planetesimals caused Theia to depart from its stable Lagrangian location, and subsequent interactions with proto-Earth led to a collision between the two bodies.

The similarity of its orbit with Earth was also very difficult to explain from natural sources, with ejecta from a recent Lunar impact or non-gravitational perturbations such as the Yarkovsky effect having been suggested. The first Earth Trojan asteroid, , was later identified and such objects could well be a source for objects like 1991 VG. 1991 VG has been a transient co-orbital of the horseshoe type in the past and it will return as such in the future; it was a natural satellite of Earth for about a month since 1992. This temporary capture may have taken place multiple times in the past and it is expected to repeat again in the future. It had an eccentricity of less than 1 with respect to the Earth from 23 February to 21 March 1992.

The IKAROS probe is the world's first spacecraft to use solar sailing as the main propulsion. It was designed to demonstrate four key technologies (comments in parentheses refer to figure): # Deployment and control of a large, thin solar sail membrane (grey- blue areas numbered 3) # Thin-film solar cells integrated into the sail to power the payload (black rectangles numbered 4) # Measurement of acceleration due to radiation pressure on the solar sail # Attitude control by varying the reflectance of 80 liquid crystal panels embedded in the sail (orange rectangles numbered 2) The mission also includes investigations of aspects of interplanetary space, such as gamma-ray bursts, solar wind and cosmic dust. The probe's ALADDIN instrument (ALDN-S and ALDN-E) measured the variation in dust density while its Gamma-Ray Burst Polarimeter (GAP) measured the polarization of gamma-ray bursts during its six-month cruise. IKAROS is to be followed by a 40 × 40 m sail, the Jupiter Trojan Asteroid Explorer, intended to journey to Jupiter and the Trojan asteroids, launched in the late 2020s, with a proposed goal of returning an asteroid sample to Earth in the 2050s.