Scientific Commission B


Scientific Commission B: Space Studies of the Earth-Moon System, Planets, and Small Bodies of the Solar System



Korablev, O.I. (Russia), 2016 - 2020*



Bhardwaj, A. (India), 2016 - 2020* (bhardwaj_spl - at -

Capria, M.-T. (Italy), 2016 - 2020*

Fujimoto, M. (Japan), 2016 - 2020*


Intercommission/Panel Liaisons:

Scientific Commission C: Grande, M. (UK), 2010 - 2014

Scientific Commission C:  Sotin, C. (USA), 2016 - 2020

Scientific Commission D: Grande, M. (UK), 2010 - 2014

Scientific Commission E:  Sotin, C. (USA), 2016 - 2020

Panel on Exploration (PEX): Foing, B. (ESA/ESTEC), 2008 - 2012


Terms of Reference

The planetary bodies of the solar system (including the Earth), especially evolutionary, dynamic and structural aspects; planetary atmospheres are included insofar as these are essential attributes of their main body; smaller bodies, including satellites, planetary rings, asteroids, comets, meteorites, and cosmic dust. (Explanatory remarks: The studies of this Commission refer mainly to space studies, especially through the use of space vehicles. The aspects of planetary atmospheric studies to be emphasized are those which relate the atmosphere to the observed surface and the interior of the planet. Structural aspects include geodesy, the observation of planetary figures, where appropriate, and potential fields, including the gravity field.)

Last update of terms of reference 19 December 2012


Sub-Commission B1: Small Bodies


Yano, H. (Japan), 2018 – 2022*  (yano.hajime - at - 



Palomba, E. (Italy), 2018 - 2022*


Terms of Reference

This Sub-Commission covers the following types of objects: cosmic dust, comets, asteroids, and planetary rings. Within this context, the Sub-Commission covers such topics as: sources and sinks, dynamics, distributions, physical and chemical properties, interactions, impact processes, and experimental techniques.

Last update of terms of reference 8 September 2006


Sub-Commission B2: International Coordination of Space Techniques for Geodesy (a joint Sub-Commission with IUGG/IAG Commission I on Reference Frames)


Blewitt, G (USA), 2015 - 2019



Hugentobler, U. (Germany), 2015 - 2019

Intercommission/Panel Liaison:

PSD: Willis, P. (IPGP/ESP) (


Terms of Reference

To develop links between various groups engaged in the field of space geodesy and geodynamics by various techniques, coordinate work of these groups, elaborate and propose projects implying international cooperation, follow their progress and report on their advancement and results.

For further details please visit the IAG page of Commission 1 on Reference Frames.

Last update of terms of reference 7 April 2014


Sub-Commission B3: The Moon


Crawford, I. (UK), 2016 - 2020



Foing, B. (ESA/ESTEC), 2018 - 2022

Liu, Jianzhong (China), 2016 - 2020



Terms of Reference:  TBD

Last update of terms of reference:  TBD


Sub-Commission B4: Terrestrial Planets


Beaty, D.W. (USA), 2016 - 2020



Breuer, D. (Germany), 2016 - 2020

Hipkin, V. (Canada), 2016 - 2020

Wilson, C. (UK), 2016 - 2020


Terms of Reference:  TBD

Last update of terms of reference:  TBD


Sub-Commission B5: Outer Planets and Satellites


Spilker, L. (USA), 2016 - 2020



Fletcher, L. (UK), 2016 - 2020

Hayes, A. (USA), 2016 - 2020

Masters, A. (UK), 2016 - 2020


Terms of Reference:  TBD

Last update of terms of reference:  TBD


Sub-Commission B6/E4:  Exoplanets Detection, Characterization and Modelling


Altieri, F. (Italy), 2018 - 2022



Ireland, M. (Australia), 2018 - 2022



Terms of Reference

Sub-commission B6/E4 deals with Exoplanets detection, characterization and modelling.

The recent discoveries of nearly a thousand of extrasolar planetary systems have opened up a number of new questions about their properties, physical conditions along with a rethinking of the concepts of habitability and life. In this context, it is not obvious whether a planetary system like our own solar system is common or unusual in the Galaxy. Planets may form and orbit around stars of almost every kind. We have found many planets which we call exotic, i.e. very close to their parent star, in highly eccentric orbits, or around binary systems, in a word very different from planets in our solar system.

Recent observations have shown how diverse can be the physical conditions of planets, both in structure, with fluffy or very dense planets, and in the composition and atmospheric stratification.  The key word is diversity.

Understanding the origin of such diversity is the goal of many of the new studies and current projects. Such activities may cover both scientific and technological aspects and could include:

- Analysis of the current and proposed projects for future observations

- Analysis of diversity of extrasolar planets

- The Solar System in the context of extrasolar planetary systems

- Definition, even non-conventional, of habitability and life

- Definition and detectability of organic pre-biotic material and biomarkers

- Laboratory activity supporting modelling and atmospheric properties studies

Last update of terms of reference:  19 July 2018


* (after officer term) = second and final term in the office indicated