Animation of 67P shape model

Posted in Comet 67P, MiARD, Modelling, Shape

This GIF animation shows the comet using shape data from the ‘MTPD009’ model derived during the early part of the mission using images from the NavCam navigational camera instrument. To make the video (using the Unity programming tool), we had to lower the resolution of the model by a factor of ten. Watch this space for a version that will work with virtual reality glasses in 3D.
The MiARD project will produce higher accuracy, higher resolution shape models using images from the OSIRIS camera instrument, and will release them to ESA’s database for public access. A preliminary ‘SHAP2’ model from the early stage of the mission is already public.
The shape models can be downloaded from the Planetary Science Archive of the European Space Agency – follow the ‘SHAPE’ link in the right-hand sidebar, and log-in as a guest user when prompted. More information on what a shape model is, can be found in this ESA blog entry.

leandro_animation_shap_2

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Rosetta to go out ‘with a big bang’

Posted in Comet 67P, Rosetta

In this video interview from Euronews, Rosetta project scientist Dr Matt Taylor explains why the Rosetta spacecraft will be ‘crashed’ onto the comet on 30th September.

 

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Philae lander finally found!

Posted in Comet 67P, Philae, Rosetta

Just a month before the end of the Rosetta mission, and a few weeks after all attempts to communicate with th elander were finally given up, the Rosetta orbiter has acquired images that clearly show the lander on the comet. This is possible because the orbiter is now much closer to the comet (on a riskier trajectory) than was the case during earlier phases of the mission. The images that show the lander were acquired from a distance of just 2.7 km, and have a resolution of 5 cm per pixel. As expected, the lander was located in a crack in the Abydos area (on the smaller of the two lobes of the comet).

Philae_close-up_labelled

Copyright ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

See also the ESA announcement.

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Dynamic comet – dramatic outburst seen by Rosetta

Posted in Comet 67P, Rosetta

A paper soon to appear (as of September 2016)describes a dramatic event captured by the Rosetta instruments earlier in the year. As a shadowed region of the coment rotated into sunlight, it is thought that thermal stresses led to a landslide and subsequent rapid evaporation of fresh ‘ice’. Rosetta saw large increases in brightness, gas temperature and density and the number of dust particles. A few days later, astronomers on Earth noticed that the density of the comet’s coma had increased.

Evolution_of_a_comet_outburst

Click for high-resolution version of the image. Copyright image: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA; all data from Grün et al (2016)

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