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Trojans' Odyssey: Unveiling the early history of the Solar System

Lamy, Phillipe and Vernazza, Pierre and Poncy, Joel and Martinot, Vincent and Hinglais, Emmanuel and Canalias, Elisabet and Bell, Jim and Cruishank, Dale and Groussin, Olivier and Helbert, Jörn and Marzari, Francesco and Morbildelli, Alessandro and Rosenblatt, Pascal and Sierks, Holger (2011) Trojans' Odyssey: Unveiling the early history of the Solar System. Experimental Astronomy. Springer. DOI: 10.1007/s10686-011-9253-2.

Full text not available from this repository.

Abstract

In our present understanding of the Solar System, small bodies (asteroids, Jupiter Trojans, comets and TNOs) are the most direct remnants of the original building blocks that formed the planets. Jupiter Trojan and Hilda asteroids are small primitive bodies located beyond the `snow line', around respectively the L4 and L5 Lagrange points of Jupiter at ˜5.2 AU (Trojans) and in the 2:3 mean-motion resonance with Jupiter near 3.9 AU (Hildas). They are at the crux of several outstanding and still conflicting issues regarding the formation and evolution of the Solar System. They hold the potential to unlock the answers to fundamental questions about planetary migration, the late heavy bombardment, the formation of the Jovian system, the origin and evolution of trans-neptunian objects, and the delivery of water and organics to the inner planets. The proposed Trojans' Odyssey mission is envisioned as a reconnaissance, multiple flyby mission aimed at visiting several objects, typically five Trojans and one Hilda. It will attempt exploring both large and small objects and sampling those with any known differences in photometric properties. The orbital strategy consists in a direct trajectory to one of the Trojan swarms. By carefully choosing the aphelion of the orbit (typically 5.3 AU), the trajectory will offer a long arc in the swarm thus maximizing the number of flybys. Initial gravity assists from Venus and Earth will help reducing the cruise time as well as the ΔV needed for injection thus offering enough capacity to navigate among Trojans. This solution further opens the unique possibility to flyby a Hilda asteroid when leaving the Trojan swarm. During the cruise phase, a Main Belt Asteroid could be targeted if requiring a modest ΔV. The specific science objectives of the mission will be best achieved with a payload that will perform high-resolution panchromatic and multispectral imaging, thermal-infrared imaging/ radiometry, near- and mid-infrared spectroscopy, and radio science/mass determination. The total mass of the payload amounts to 50 kg (including margins). The spacecraft is in the class of Mars-Express or a down-scaled version of Jupiter Ganymede Orbiter. It will have a dry mass of 1200 kg, a total mass at launch of 3070 kg and a ΔV capability of 700 m/s (after having reached the first Trojan) and can be launched by a Soyuz rocket. The mission operations concept (ground segment) and science operations are typical of a planetary mission as successfully implemented by ESA during, for instance, the recent flybys of Main Belt asteroids Steins and Lutetia.

Document Type:Article
Additional Information:Bisher nur online erschienen.
Title:Trojans' Odyssey: Unveiling the early history of the Solar System
Authors:
AuthorsInstitution or Email of Authors
Lamy, PhillipeLaboratoire d’Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France
Vernazza, PierreLaboratoire d’Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France
Poncy, JoelThales Alenia Space, Cannes, France
Martinot, VincentThales Alenia Space, Cannes, France
Hinglais, EmmanuelCentre National d’Etudes Spatiales, Toulouse, France
Canalias, ElisabetCentre National d’Etudes Spatiales, Toulouse, France
Bell, JimArizona State University, Phoenix, AZ, USA
Cruishank, DaleNASA Ames, Moffett Field, CA, USA
Groussin, OlivierLaboratoire d’Astrophysique de Marseille, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France
Helbert, Jörnjoern.helbert@dlr.de
Marzari, FrancescoUniversity of Padova, Padova, Italy
Morbildelli, AlessandroObservatoire de la Cote d’Azur, Nice, France
Rosenblatt, PascalObservatoire Royal de Belgique, Bruxelles, Belgium
Sierks, HolgerMax Planck Institute for Solar System Studies, Lindau, Germany
Date:September 2011
Journal or Publication Title:Experimental Astronomy
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1007/s10686-011-9253-2
Publisher:Springer
Status:Published
Keywords:Trojaner, Asteroiden
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Dr.rer.nat. Jörn Helbert
Deposited On:19 Dec 2011 10:22
Last Modified:20 Mar 2013 19:44

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