UESAC - the Uppsala-Eso Survey of Asteroids and Comets

In this chapter, the author summarizes the properties of the Solar System, and how these were uncovered. Over centuries, the arrangement and properties of the Solar System were determined. The distinctions between the terrestrial planets, the gas and ice giants, and their various moons are discussed. Whereas humans have walked only on the Moon, probes have visited all the planets and several moons, asteroids, and comets; samples have been returned to Earth only from our moon, a comet, and from interplanetary dust. For Earth and Moon, seismographs probed their interior, whereas for other planets insights come from spacecraft and meteorites. We learned that elements separated between planet cores and mantels because larger bodies in the Solar System were once liquid, and many still are. How water ended up where it is presents a complex puzzle. Will the characteristics of our Solar System hold true for planetary systems in general?

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CHEMODYNAMICAL DEUTERIUM FRACTIONATION IN THE EARLY SOLAR NEBULA: THE ORIGIN OF WATER ON EARTH AND IN ASTEROIDS AND COMETS

The Astrophysical Journal ◽

10.1088/0004-637x/784/1/39 ◽

2014 ◽

Vol 784 (1) ◽

pp. 39 ◽

Cited By ~ 51

Author(s):

T. Albertsson ◽

D. Semenov ◽

Th. Henning

Keyword(s):

Solar Nebula ◽

Asteroids And Comets

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Observational Data and Orbits of the Asteroids Discovered at the Molėtai Observatory in 2008–2009

Open Astronomy ◽

10.1515/astro-2017-0265 ◽

2016 ◽

Vol 25 (4) ◽

Author(s):

K. Černis ◽

I. Wlodarczyk ◽

J. Zdanavičius

Keyword(s):

Observational Data ◽

Minor Planet ◽

Orbital Elements ◽

Main Belt ◽

Ccd Observations ◽

Near Earth Objects ◽

Asteroids And Comets

AbstractWe present the statistics of the asteroids observed and discovered at the Molėtai Observatory, Lithuania, in 2008–2009 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets. CCD observations of the asteroids were obtained with the 35/51-cm Maksutov-type meniscus telescope. In the Minor Planet Circulars and the Minor Planet Electronic Circulars (2008–2009), 11 900 astrometric positions of 2522 asteroids were published. Among them 95 were new asteroids, including four belonging to the Trojan group: (352655) 2008QX28, 2008 SE8, (353194) 2009 SM100 and (264068) 2009 SQ148. For the asteroids discovered at Molėtai their precise orbits are calculated. Because of short observational arc, a few asteroids have low-precision orbits and some asteroids are considered lost. For the three Main Belt asteroids with low-precision orbital elements, 2008 QP32, 2008 SD8 and 2008 SG150, we present their ephemerides for 2017. They can be brighter than 20 mag.

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