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Proposed mission to Mars and his Trojan Asteroid Family

Wickhusen, Kai and Oberst, Jürgen and Willner, Konrad (2019) Proposed mission to Mars and his Trojan Asteroid Family. EGU General Assembly 2019, 7 - 12 April 2019, Vienna, Austria.

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In the context of ESAs past call for medium class missions, we were investigating missions to Mars in combination with a flyby at a Mars Trojan on the way to the planet. We set up a three-impulse (Earth departure, mid-course correction and Mars orbit insertion) model to determine physically possible trajectories and flyby scenarios optimized in terms of required propellant and time (i.e., operation costs). We propose several scenarios in the time frame 2020-2050 including trajectories that involve more than one revolution about the sun. With the Earth and Mars ephemerides relatively fixed in space and time, the Trojan candidate has to be "at the right place at the right time" to minimize expensive spacecraft course adjustments. In principle, flybys are possible for any Trojan target - but we cut-off and present models having flyby delta-v < 1 km/s and transit time of < 5 years. We report on several scenarios, each including a flyby at one Trojan. Our results show that flybys of most of the Trojans are well conceivable. One good candidate for such a mission is Trojan 311999 (2007 NS2). With a launch in September 2028, the required additional delta-v will be less than 100 m/s, associated with a total transfer time (from Earth to Mars) of approximately 800 days. While a standalone mission to a Mars Trojan is currently probably far from practical due to costs, a combined mission to Mars and one of its Trojans is conceivable, and valuable science may be obtained at reasonable added resources.

Item URL in elib:https://elib.dlr.de/132223/
Document Type:Conference or Workshop Item (Speech)
Title:Proposed mission to Mars and his Trojan Asteroid Family
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wickhusen, KaiKai.Wickhusen (at) dlr.dehttps://orcid.org/0000-0003-2524-5285
Oberst, JürgenJuergen.Oberst (at) dlr.deUNSPECIFIED
Willner, Konradkonrad.willner (at) dlr.dehttps://orcid.org/0000-0002-5437-8477
Date:April 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 13883
Series Name:Geophysical Research Abstracts
Keywords:Mars Trojans, Trojan, Asteroid, Eureka, 311999 (2007 NS2), Flyby
Event Title:EGU General Assembly 2019
Event Location:Vienna, Austria
Event Type:international Conference
Event Dates:7 - 12 April 2019
Organizer:European Geoscience Union
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
Institute of Planetary Research > Planetary Geodesy
Deposited By: Wickhusen, Kai
Deposited On:09 Dec 2019 10:45
Last Modified:09 Dec 2019 10:45

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