Statistics
Publications
8
Citations
879
H-Index
8
Active since
1997
C. E. Helfrich is an author at Johns Hopkins University Applied Physics Laboratory specializing in aerospace engineering, engineering, and orbit determination.
Publications per year
1997–2002
8
8
Determination of Shape, Gravity, and Rotational State of Asteroid 433 Eros
James Miller, A. S. Konopliv, Peter G. Antreasian et al. · Icarus · 2002 · 280 citations
Radio Science Results During the NEAR-Shoemaker Spacecraft Rendezvous with Eros
D. K. Yeomans, Peter G. Antreasian, Jean‐Pierre Barriot et al. · Science · 2000 · 220 citations
Estimating the Mass of Asteroid 253 Mathilde from Tracking Data During the NEAR Flyby
D. K. Yeomans, Jean‐Pierre Barriot, David Dunham et al. · Science · 1997 · 215 citations
Implementation of the First Asteroid Landing
David Dunham, Robert W. Farquhar, James McAdams et al. · Icarus · 2002 · 69 citations
Estimating the Mass of Asteroid 433 Eros During the NEAR Spacecraft Flyby
D. K. Yeomans, Peter G. Antreasian, A. F. Cheng et al. · Science · 1999 · 60 citations
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