Opendata, web and dolomites


Comet and Asteroid Re-Shaping through Activity

Total Cost €


EC-Contrib. €






Project "CAstRA" data sheet

The following table provides information about the project.


Organization address
city: Munich
postcode: 80539

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website
 Total cost 1˙484˙688 €
 EC max contribution 1˙484˙688 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-03-01   to  2023-02-28


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The proposed project will significantly improve the insight in the processes that have changed a comet nucleus or asteroid since their formation. These processes typically go along with activity, the observable release of gas and/or dust. Understanding the evolutionary processes of comets and asteroids will allow us to answer the crucial question which aspects of these present-day bodies still provide essential clues to their formation in the protoplanetary disc of the early solar system.

Ground-breaking progress in understanding these fundamental questions can now be made thanks to the huge and unprecedented data set returned between 2014 and 2016 by the European Space Agency’s Rosetta mission to comet 67P/Churyumov-Gerasimenko, and by recent major advances in the observational study of active asteroids facilitated by the increased availability of sky surveys and follow-on observations with world-class telescopes.

The key aims of this proposal are to - Obtain a unified quantitative picture of the different erosion processes active in comets and asteroids, - Investigate how ice is stored in comets and asteroids, - Characterize the ejected dust (size distribution, optical and thermal properties) and relate it to dust around other stars, - Understand in which respects comet 67P can be considered as representative of a wider sample of comets or even asteroids.

We will follow a highly multi-disciplinary approach analyzing data from many Rosetta instruments, ground- and space-based telescopes, and connect these through numerical models of the dust dynamics and thermal properties.


year authors and title journal last update
List of publications.
2020 David Jewitt, Man-To Hui, Yoonyoung Kim, Max Mutchler, Harold Weaver, Jessica Agarwal
The Nucleus of Interstellar Comet 2I/Borisov
published pages: L23, ISSN: 2041-8213, DOI: 10.3847/2041-8213/ab621b
The Astrophysical Journal 888/2 2020-02-12
2019 Jessica Agarwal
Close-up view of an active asteroid
published pages: 1192-1193, ISSN: 0036-8075, DOI: 10.1126/science.aaz7129
Science 366/6470 2020-02-04
2018 J. Agarwal, M. Mommert
Nucleus of active asteroid 358P/Pan-STARRS (P/2012 T1)
published pages: A54, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832761
Astronomy & Astrophysics 616 2020-02-04
2019 David Jewitt, Jessica Agarwal, Man-To Hui, Jing Li, Max Mutchler, Harold Weaver
Distant Comet C/2017 K2 and the Cohesion Bottleneck
published pages: 65, ISSN: 1538-3881, DOI: 10.3847/1538-3881/aaf38c
The Astronomical Journal 157/2 2020-02-04
2018 Johannes Markkanen, Jessica Agarwal, Timo Väisänen, Antti Penttilä, Karri Muinonen
Interpretation of the Phase Functions Measured by the OSIRIS Instrument for Comet 67P/Churyumov–Gerasimenko
published pages: L16, ISSN: 2041-8213, DOI: 10.3847/2041-8213/aaee10
The Astrophysical Journal 868/1 2020-02-04
2019 Johannes Markkanen, Jessica Agarwal
Scattering, absorption, and thermal emission by large cometary dust particles: Synoptic numerical solution
published pages: A164, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201936235
Astronomy & Astrophysics 631 2020-02-04

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The information about "CASTRA" are provided by the European Opendata Portal: CORDIS opendata.

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