Re: Lucy - Préparation et suivi de mission (astéroïdes et troyens) - Octobre 2021

**Wakka** Admin Messages : 28458 Inscrit le : 10/07/2008

Lucy photographiée lors de son passage.
@LucyMission

Lucy - Préparation et suivi de mission (astéroïdes et troyens) - Octobre 2021 - Page 3 Image393

J'ai un petit peu de mal à lire le numéro de série sur la carlingue, mais ça reste de la haute précision :)

2 liens intéressants:

"Where is Lucy" lors des flyby terrestres ? https://whereislucy.space/EGA1.html

"Where is Lucy" en temps réel ? https://whereislucy.space

Une astronome canadienne FB_ok

a capté le passage de Lucy lors de son flyby

LUCY space craft fly by Taken by Debra Ceravolo on October 16, 2022 @ south Okanagan, BC, Canada a écrit:

https://spaceweathergallery.com/indiv_upload.php?upload_id=189333

Caught the space craft LUCY when it emerged from the Earth's shadow. Unfortunately, missed the fade out. Used a Canon 6D with a Sigma Art 50mm lens at f/1.4, ISO 1600. 15 second photos with 2 second intervals stacked. Location southern Okanagan Valley, BC, Canada

montmein69 a écrit:Un astronome canadien a capté le passage de Lucy lors de son flyby

Je dirais même, "Une astronome canadienne" ! FB_sourire

Lucy - Préparation et suivi de mission (astéroïdes et troyens) - Octobre 2021 - Page 3 Maxres10

C'est corrigé

La Terre et la Lune, vues par la sonde Lucy avec l'instrument T2CAM le 13 octobre 2022, d'une distance de 1,4 million de kilomètres :

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NASA/Goddard/SwRI

On October 13, 2022, NASA’s Lucy spacecraft captured this image of the Earth and the Moon from a distance of 890,000 miles (1.4 million km). The image was taken as part of an instrument calibration sequence as the spacecraft approached Earth for its first of three Earth gravity assists. These Earth flybys provide Lucy with the speed required to reach the Trojan asteroids — small bodies that orbit the Sun at the same distance as Jupiter. On its 12 year journey, Lucy will fly by a record breaking number of asteroids and survey their diversity, looking for clues to better understand the formation of the solar system.

The image was taken with Lucy’s Terminal Tracking Camera (T2CAM) system, a pair of identical cameras that are responsible for tracking the asteroids during Lucy’s high speed encounters. The T2CAM system was designed, built and tested by Malin Space Science Systems; Lockheed Martin Integrated the T2CAMs onto the Lucy spacecraft and operates them.

La Terre, vue par la sonde Lucy avec l'instrument T2CAM le 15 octobre 2022, d'une distance de 620 000 km :

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NASA/Goddard/SwRI

NASA’s Lucy spacecraft captured this image (which has been cropped) of the Earth on Oct 15, 2022, as a part of an instrument calibration sequence at a distance of 380,000 miles (620,000 km). The upper left of the image includes a view of Hadar, Ethiopia, home to the 3.2 million-year-old human ancestor fossil for which the spacecraft was named.

Lucy is the first mission to explore the Jupiter Trojan asteroids, an ancient population of asteroid “fossils” that orbit around the Sun at the same distance as Jupiter. To reach these distant asteroids, the Lucy spacecraft’s trajectory includes three Earth gravity assists to boost it on its journey to these enigmatic asteroids.

The image was taken with Lucy’s Terminal Tracking Camera (T2CAM) system, a pair of identical cameras that are responsible for tracking the asteroids during Lucy’s high-speed encounters. The T2CAM system was designed, built and tested by Malin Space Science Systems; Lockheed Martin Integrated the T2CAMs onto the Lucy spacecraft and operates them.

La Lune vue par la sonde Lucy, 8 heures après le survol de la Terre, d'une distance de 230 000 km, avec l'instrument L'LORRI (pose de 1 ms) :

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NASA/Goddard/SwRI/JHU-APL/Tod R. Lauer (NOIRLab)

Single Frame of Mare Imbrium

NASA’s Lucy spacecraft captured this image of the Moon’s surface on Oct 16, 2022, about 8 hours after it flew by the Earth for its first of three gravity assists. The image was taken while Lucy was between the Earth and the Moon, so it shows a perspective familiar to Earth-based observers. The image shows a roughly 600 mile (1000 km) wide swath of lunar terrain, dominated by the ancient, lava-filled impact basin Mare Imbrium. The Apennine Mountains, part of the Imbrium basin rim, which were the landing site for the Apollo 15 mission in 1971, dominate the lower-right portion of the image. Lucy was approximately 140,000 miles (230,000 km) from the Moon when the image was taken.

The image, which is a single 1 millisecond exposure, has been sharpened. Each pixel represents approximately 0.7 miles (1.1 km).

This image was taken with L’LORRI (Lucy LOng Range Reconnaissance Imager), Lucy’s high resolution greyscale imager. L’LORRI was provided and operated by Johns Hopkins Applied Physics Laboratory.

Est-ce le panneau solaire en éventail s'est enfin bien fixé ?

Aragatz a écrit:Est-ce le panneau solaire en éventail s'est enfin bien fixé ?

Oui, je crois qu'ils en sont à ~357°, donc tout va bien.

Déployé à 98%, le panneau solaire récalcitrant restera en l'état, l'équipe en charge de la mission ayant décidé de suspendre de nouvelles activités de déploiement, estimant le risque acceptable et que de nouveaux essais ne seraint probablement pas bénéfiques

Tant que ce panneau reçoit quand même largement d'énergie solaire pour faire fonctionner la sonde, je pense qu'il n'y a plus de quoi s'inquiéter, mais surveiller qu'il ne se replie pas non plus, ne pouvant désormais plus être fixé...

Oui Aragatz comme tu as l'air de le sou-entendre, aucune raison pour que cela bouge maintenant !

Un 10^e astéroïde a été ajouté au programme de la sonde Lucy : 1999 VD57

https://twitter.com/tony873004/status/1618342208633208832

Le survol de 1999 VD57 est prévu le 1^er novembre 2023.

https://www.nasa.gov/feature/goddard/2023/nasa-s-lucy-team-announces-new-asteroid-target

Lucy - Préparation et suivi de mission (astéroïdes et troyens) - Octobre 2021