Paris observatory — Observatoire de Paris
IMCCE — Institut de mécanique céleste et
                de calcul des éphémérides
Unité Mixte de Recherche UMR-CNRS 8028

    77 avenue Denfert-Rochereau

Bâtiment A, Bureau 205
Tel:  +33 (0)1 40 51 22 60
Fax: +33 (0)1 40 51 20 58
Skype: hestroffer

http: www.imcce.fr/~hestro/

Last update: Dec. 2006


  Groupe Astrométrie et Planétologie — Astrometry and Planetology group

  Fields of research
  Other documents
  Curriculum Vitæ

  Fields of research:

Space astrometry:
o Hipparcos & Tycho
Link of the dynamical reference frame (Hestroffer, 1994 Ph.D., supervisor Bruno Morando†).
Data reduction for the solar system objects. Construction of the Catalogue for the solar system data (solar_ha.dat, solar_hp.dat & solar_t.dat are available at CDS Solar system annexe ). The full catalogue and explanation books are available at ESA.
Data analysis for the Hipparcos and Tycho data. Photometry with a periodic grid of asteroids and natural satellites. Limb darkening of asteroids from modulated photometry and from astrometry. Orbit improvements of asteroids. Photocentre offset vs centre of gravity. Dynamical reference frame link. Orbit of Jupiter through the astrometry of its satellites. Analysis of the Hipparcos 'lightcurves' of asteroids.
Mission preparation. Scientific expertise. Simulation of the focal plane observations for solar system objects. Orbit improvement of asteroids. Determination of solar quadrupole J2 and relativistic PPN parameter β. Asteroids masses (Cf. S. Mouret).
Core member of the Solar System Working Group (GAIA-SSWG) and the Relativity and Reference Frame Working Group (RRFWG).

High Angular Resolution:
o Hubble Space Telescope (HST)
Observation of asteroid with FGS interferometer. Determination of asteroids sizes and shapes. Link with the physical ephemerides and topographic models of asteroids surfaces.
o Ground-based Adaptive Optics
Analysis of high resolution ground-based AO observations (VLT, Keck, TNG). Link with the physical ephemerides and determination of the spin pole ambiguity.
o Ground-based Interferometry
Analysis of stellar diameter and stellar limb-darkening determination with an intensity interferometer.

Dynamics & Ephemerides:
o Dynamics
Rotation of relaxed asteroids and tumbling asteroids. Orbit determination of asteroids. Radial velocity of asteroids.
o Binary asteroids
Orbit determination of binary asteroids and visual binaries. Mass, density, porosity, internal structure and packing of asteroids. Figures of equilibrium among asteroids and binary asteroids in particular.
o Ephemerides
Physical ephemerides of asteroids (Cf. J. Berthier). Prediction of the apparent shape and size, prediction of lightcurves extremum. Link to topographic modeling.


References through NASA's ADS or its mirror site at CDS

Refereed publications: ( means on-line file)
Hestroffer, Vachier & Balat 2006. Orbit determination of binary asteroids. (pdf)
Marchis et al. 2006. The density of the Trojan binary Patroclus. Nature TBC, in press. (pdf TBC)
Marchis et al. 2005. Discovery of the triple asteroidal system 87 Sylvia. Nature 436, 822. (pdf)
Marchis et al. 2005. Mass and density of Asteroid 121 Hermione from an analysis of its companion orbit. Icarus 178, 450. (pdf)
Hestroffer 2003. Photometry with a periodic grid. II. A&A 403, 749. (pdf)
Marchis et al. 2003. A three-dimensional solution for the orbit of the asteroidal satellite of 22 Kalliope. Icarus 165, 112. (pdf)
Cellino et al. 2003. Speckle interferometry observations of asteroids at TNG. Icarus 162, 278. (pdf)
Tanga et al. 2003. Asteroid observations with the Hubble Space Telescope. II. A&A 401, 733. (pdf)
Hestroffer et al.2002. Asteroid (216) Kleopatra. Tests of the radar-derived shape model. A&A 392, 729. (pdf) and addendum for Fig. 1 A&A 396, 301.
Hestroffer et al.2002. Adaptive optics observations of asteroid (216) Kleopatra. A&A 394, 339. (pdf)
Hestroffer et al. 2002. Asteroids observations with the Hubble Space Telescope. I. A&A 391, 1123. (pdf)
Tanga et al. 2001. NOTE: HST/FGS Observations of the Asteroid (216) Kleopatra. Icarus 153, 451. (pdf)
Hestroffer 1998. Photocentre displacement of minor planets: analysis of HIPPARCOS astrometry. A&A 336, 776. (pdf)
Hestroffer et al. 1998. The HIPPARCOS solar system objects catalogues. A&A 334, 325. (pdf)
Hestroffer & Magnan 1998. Wavelength dependency of the Solar limb darkening. A&A 333, 338. (pdf)
Hestroffer et al. 1998. Minor planets ephemerides improvement. From joint analysis of HIPPARCOS and ground-based observations. A&A 311, 113. (pdf)
Hestroffer 1997. Centre to limb darkening of stars. New model and application to stellar interferometry. A&A 327, 199. (pdf)
Hestroffer & Mignard 1997. Photometry with a periodic grid. I. A&A 325, 1253. (pdf)
Hestroffer et al. 1995. Astrometry of minor planets with Hipparcos. A&A 304, 168. (pdf)
Hestroffer & Morando 1995. Observations of minor planets by Hipparcos. P&SS 43, 817. (pdf)

Thesis: ( means on-line document)
Hestroffer D. 1994. Ph.D. thesis. Astrométrie et photométrie des astéroïdes observés par HIPPARCOS (In french). Observatoire de Paris. (pdf)
Hestroffer D. 1991. Master thesis (Diplôme d'études approfondies, DEA). HIPPARCOS - Réduction des données d'observation des petites planètes. Analyse des premiers résultats (In french). Observatoire de Paris. (pdf)
Hestroffer D. & Schumacher F. 1987. Projet de fin d'études (PFE). Biomécanique du genou humain (In french). Ecole Nationale Supérieure des Arts & Métiers (ENSAM, Paris).

Other publications (communications, proceedings, ...): ( means on-line document)
Mouret, Hestroffer & Mignard 2006. . Proceedings of the IAU Symposium 236. TBC. (pdf available soon)
Hestroffer, Mouret, Mignard & Berthier 2006. . Proceedings of the Marcel Grosman Meeting 11. TBC. (pdf available soon)
Mouret, Hestroffer & Mignard 2005. Asteroid mass determination with the Gaia mission. Proceedings of the "Journées JSR 2005". TBC. (preprint pdf)
Hestroffer, Babusiaux, Mignard, Arenou, Berthier, Chereau, Mignot & Mouret 2005. Astrometry of asteroids with the Gaia space mission. Proceedings of the SF2A 2005 (eds. Casoli, Contini, Hemeury, Pagani). Scientific Highlights 2005, 117. (pdf)
Hestroffer & Berthier 2005. Determination of the PPN β and the Solar J2 from asteroid astrometry. Proceedings of "GAIA 3D". ESA SP-576, 297. (preprint pdf)
Kaasalainen, Hestroffer & Tanga 2005. Physical models and refined orbits for asteroids from Gaia photometry and astrometry. ESA SP-576, 301.
Hestroffer & Tanga 2006. Asteroids from Observations to Models. Lect. Notes Phys. Series 682, 89--116. (preprint pdf)
Hestroffer 2005. On Equilibrium Shapes among Binary Asteroids. DDA 35, #0710. (poster pdf)
Marchis et al. 2004. Fine Analysis of 121 Hermione, 45 Eugenia, and 90 Antiope Binary Asteroid Systems With AO Observations. DPS 36, #4602
Marchis et al. 2004. Studying binary asteroids with NGS and LGS AO systems. SPIE 5490, 338-350
Berthier et al. 2004. Prediction of stellar occultations by satellite of asteroids. DPS 36, #3223.
Hestroffer 2004. On Equilibrium Shapes among Binary Asteroids. DDA 35, #0710.
Berthier et al. 2004. IAUc #8338.
Lecacheux et al. 2004. IAUc #8285.
Marchis et al. 2004. IAUc #8264.
Vachier et al. 2003. First dynamical model for the (22) Kalliope's satellite. DPS 35, #3607.
Kaasalainen et al. 2003. Remote sensing of asteroids: large population sample from photometric and other data. DPS 35, #3411.
Marchis et al. 2003. Searching and Studying Binary Asteroids with AO Systems. DPS 35, #2403.
Marchis et al. 2003. Search for binary asteroids using Lick, Keck and VLT Adaptive Optics systems: new candidates, orbits and dynamical models. EAEJA, #11985.
Marchis et al. 2002. Adaptive optics observations of the binary system (22) Kalliope: a three dimensional orbit solution. (preprint pdf) ACM 2002. ESA SP-500, p.725-728.
Tanga et al. 2002. Shape and size measurements of asteroids by the HST Fine Guidance Sensors. ACM 2002. ESA SP-500, p.717-720. (preprint pdf)
Cellino et al. 2002. Speckle interferometry observations of main belt asteroids at TNG. ACM 2002. ESA SP-500, p.497-500. (preprint pdf)
Hestroffer et al.2002. Comparison of topographic models for asteroids to the HST/FGS data. ACM 2002. ESA SP-500, p.493-496. (preprint pdf)
Hestroffer 2002. Asteroids survey with GAIA - Scientific impacts. MemSAI 73, 764. (preprint pdf)
Hestroffer et al.2002. HST/FGS interferometric observations of asteroids. MemSAI 73, 674. (preprint pdf)
Fienga et al.2002. 2005 French ephemerides: implementation of new constants and theories. IERS 29, 93-95.
Hestroffer 2002. Preparing GAIA for the Solar System. Proceedings of "GAIA: A European Space Project". EAS Publications Series, Vol. 2, pp.359-364. (preprint pdf)
Cellino et al. 2001. Asteroid Observations Using the Speckle Camera at TNG. DPS 33, #6102.
Hestroffer et al.1999. Science of the Solar System with GAIA. DPS 31, #5949. (poster pdf)
Hestroffer2001. Gaia et le système solaire. In: Journées scientifiques de l'IMCCE, 7-9 juin 2000, Paris. Notes Scient. et Tech. de l'IMC S076 p. 123.
Thuillot et al. 1999. Astrometric parameters of asteroids from stellar occultations. DPS 31, #5913.
Tanga et al. 1999. Direct Measurements of Asteroid Sizes and Duplicity Search by the HST FGS Interferometer. DPS 31, #2003.
Marchis et al. 1999. IAUc #7308.
Hestroffer 1999. GAIA et le système Solaire. In: L'astrométrie pour l'astrophysique et l'astrodynamique (eds. M Froeschlé & F. Mignard). Atelier GAIA, Mas du Calme, 17-18 juin 1999, Grasse, p. 149-158.
Morisson et al. 1998. Check on JPL DExxx Using HIPPARCOS and TYCHO Observations. IAU XXIIIrd GA. Highlights of Astronomy Vol. 11A, p.554.
Hestroffer 1998. Report: Comparison of the performance for the monopupil and the interferometer design of Gaia. Osservatorio Astronomico di Torino, OATo.
Hestroffer & Mignard 1997. Determination of Limb-Darkening from HIPPARCOS Observations. ESA Symposium `Hipparcos - Venice '97'. ESA SP-402, p. 173-176. (pdf)
Morisson et al. 1997. Check on JPL DExxx using HIPPARCOS and TYCHO Observations. ESA Symposium `Hipparcos - Venice '97'. ESA SP-402, p. 149-152 (pdf)
Hestroffer 1997. The HIPPARCOS Solar System Objects Annexes. ESA Symposium `Hipparcos - Venice '97'. ESA SP-402, p. 35-40 (pdf)
Hestroffer1997. Objets du système solaire Hipparcos. In: Journées scientifiques de l'IMCCE, 3-4 avril 1997, Paris. Notes Scient. et Tech. de l'IMC S056 p. 63.
Hestroffer & Morando 1996. Solar system objects observed by HIPPARCOS. IAU Symp. 172, 437. (pdf)
Hestroffer 1996. Observation des petites planètes par Hipparcos. In: De l'utilisation des données Hipparcos (eds. M Froeschlé & F. Mignard). Atelier du Groupe de Recherche en Astronomie Spatiale (CNRS), Mas du Calme, 26-27 septembre 1995, Grasse, p. 49-156.
Hestroffer 1996. Astrométrie des corps du système solaire. In: Interférométrie visible et IR dans l'espace (eds. F. Vakili & S. Loiseau). PN HRAA, 17-18 octobre, Meudon. ESA SP-379 p. 149-158.
Hestroffer & Morando1995. What to expect from observations of solar system objects with Gaia. In: Future possibilities for astrometry in space. A joint RGO-ESA workshop, 19-21 June 1995, Cambridge. ESA SP-379 p. 149-158. (pdf)
Hestroffer1995. Astrométrie des astéroïdes observés par Hipparcos. In: Journées scientifiques de l'IMCCE, 30-1er décembre 1994, Paris. Notes Scient. et Tech. de l'IMC S050 p. 129.
Hestroffer 1993. Inertial Frame Determination from HIPPARCOS Observations of Minor Planets. IAU Symp. 156, 19. (pdf)

  Other documents:

La mission Gaia vue du système solaire Colloque ADSG (Lille, 3 mars 2006), ou ici pdf .
Pourquoi y a t-il des Années bissextiles ? Françoise Gaujour Europe 1 (28 février 2005), ou ici : 06h23 .
Depuis quand l'année est-elle divisée en mois ? Françoise Gaujour Europe 1 (1er décembre 2005), ou ici : 06h23.
GAIA stuff:

2nd SSWG Bordeaux pdf

3rd SSWG Paris. pdf

4th SSWG Besançon pdf

5th SSWG Helsinki pdf

6th SSWG Dresden pdf

7th SSWG Nice. pdf

6th RRFWG Paris. pdf

7th RRFWG Dresden. pps

2nd SimWG Cambridge. pdf

3rd SimWG Barcelona. pdf

GAIA 3D Paris: Orbit pdf -- Photometry pdf

SF2A 2005 Strasbourg: Astrometry of asteroids pdf
Journées scientifiques:
JS2000, Gaia et le système solaire. pps. JS2003, Figures d'équilibre parmi les astéroïdes. pps. JS2006, Tests de la relativité générale avec les observations des astéroïdes par le satellite Gaia. swf.
Other communications:
Les Houches CNRS School pdf. Grasse atelier pdf. Padova DPS 31 pdf. Palermo Ceres 2001 pdf. Buzios ACM 2005, Orbit determination of binary asteroids pdf -- Buzios ACM 2005, Gaia pdf. Cambridge DPS 37, Figures of Equilibrium among binary asteroids pdf. Namur Physical Ephemeris of Asteroids and Tumbling Asteroids. swf. Birmingham Workshop LISA-SKA-GAIA -- testing GR. pps. Catania TNO 06, Orbit Determination of Kuiper-belt binaries swf. Berlin MGM 11, GAIA - Relativistic Tests from the Motion of the Asteroids swf. Nikolaev NAO185 pdf. Pasadena DPS 38, HST/FGS High Angular Resolution Observations of Binary Asteroids swf-- Pasadena DPS 38, Orbital and Physical Characterization of Centaur & TNO binaries pdf. Paris Workshop MEOTUS Paris 2006 swf TBC. Darmstadt Workshop flight dynamics, ESOC June 2007 TBC. Grenoble SF2A 2007 TBC. Potsdam EuroPlanet SC 2007 TBC.


F. Mignard, P. Tanga, M. Delbó (OCA, Nice, FR)
F. Arenou, C. Babusiaux, F. Crifo, A. Doressoundiram, F. Merlin, E. Lelouch (OBSPM, Paris, FR)
C. Soubiran (Observatoire Bordeaux, FR)
G. Jasniewicz (GRAAL, Montpellier, FR)
A. Cellino, A. Del'oro, M. Delbó, V Zappalà (INAF-OATo, Turin, IT)
F. Marchis, I. de Pater (UCA, Berkley, USA)
M. Kaasalainen, K. Muinonen, J. Torppa, J. Virtanen (Helsinki university & observatory, Helsinki, FI)
M. Müller, A. Harris (DLR, Berlin, DE)
D. Richardson, P. Elankumaran (Univ. of Maryland, USA)
T. Müller (MPG, Garching, DE), H. Boehnhardt (MPS, Katlenburg-Lindau, DE)


Curriculum Vitæ CV (in French)
In charge at IMCCE of the seminars Temps & Espace (IMCCE-SYRTE) (since 2005)
In charge with A. Albouy of the IMCCE library (since 2006)
In charge of the Annuaire du Bureau des longitudes, annual publication of ephemerides (Ed. EDP Sciences) (1998-2008)
In charge of the Connaissance des Temps annual publication of ephemerides (Ed. EDP Sciences) (since 2009)
Membre de la commission électorale de l'observatoire de Paris (2000-2004?)
Membre du Conseil de l'IMCCE (1999-2003)
Membre du Conseil scientifique de l'IMCCE (2003-)
Membre du Conseil scientifique de l'Observatoire, et du Conseil d'administrration de l'Observatoire (2007-)
Reviewer for A&A, Icarus, JASR, EM&P, MemSAI, P&SS, TNO.
Member of the IAU commision 15 (secretary) and 52. Member of the IAU Working Group on Cartographic Coordinates.
Core member of the GAIA working groups SSWG and RRFWG (Solar System; Relativity and Reference Frame), associate member of the SimWG (Simulations), until 2006
Member of the Gaia Coordination Unit CU4 (since 2006)
Ma trombine ici et et le châtiment des Danaïdes de J. W. Waterhouse pour changer
Puis pour continuer cette page des classiques "And now for something completely different"



Attention: Ce serveur a été mis en place avec l'aide du Ministère de l'Education Nationale, du CNRS et du CNES. Tout usage des données diffusées par ce serveur nécessite l'accord de l'IMCCE.