The orbit of Comet 1941c-1941IV /De Kock-Paraskevopoulos/
Calculating orbit for Comet 1941c -1941IV using least squares method, and considering planetary perturbations
Van Biesbroeck, G.↗
SEARCH · Engineering Papers
Results for “COMETS”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Search for microwave H2O emission in Comet Bennett /1969i/
Using 85-foot telescope to detect 22,235 MHz transition of H2O during appearance of Comet Benett
Clark, T. A.↗
Halley's Comet flythrough and rendezvous missions via solar electric propulsion
Characteristics and capabilites of solar electric propulsion for missions to Halleys comet due to return 1985-1986
Friedlander, A. L.↗
Trajectory and propulsion characteristics of comet rendezvous opportunities
Trajectory and propulsion characteristics of spacecraft rendezvous mission opportunities to comets during 1975 to 1995
Friedlander, A. L.↗
Application of an impulsive trajectory optimization method to the comet rendezvous problem
Multiple impulsive spacecraft trajectory optimization technique application to comet rendezvous problem, using computer program
Waters, J. I.↗
Nongravitational forces affecting the motions of periodic comets Giacobini-Zinner and Borrelly
Periodic comets Giacobini-Ziner and Borrelly motions, determining orbits with nonNewtonian motion equations and three orthogonal nongravitational terms
Yeomans, D. K.↗
Comet Bennett 1969 i - Narrow-band filter photometry 0.3 to 1.1 microns
Comet Bennett 1969i IR narrow band filter photometry
Johnson, T. V.↗
Spectrophotometry of Comet 1969g - Tago- Sato-Kosaka
Comet 1969g spectrum at 3800-8500 A, noting upper H alpha surface brightness limit consistency with chromospheric resonance fluorescence model
Odell, C. R.↗
The visual observation of comets
Comets structural features via visual observations, emphasizing inner coma structures and expanding envelopes surrounding nucleus
Donn, B.↗
Infrared observations of comets 1969g and 1969i
Ground based and airborne IR observation of comets over various wavelengths, determining flux distribution, luminous outbursts and color temperature
Kleinmann, D. E.↗
Nature of particulate matter in comets as determined from infrared observations
Bright comets particles albedo, absorptivity and size observation by combined IR and optical photometry
Odell, C. R.↗
Evidence for intramercurial planetary objects or comets discovered during solar eclipses
Intra-Mercurial planets and comets discovered during solar eclipses, discussing size, orbital eccentricity, albedo and equilibrium temperature
Courten, H. C.↗
Asteriods and comets
Asteroids and comets bibliography and review, considering celestial mechanics and astrometry, photometry, spectra, polarimetry and radar measurements
Gehrels, T.↗
Guidance and navigation for comet rendezvous missions
Guidance and navigation requirements for rendezvous missions to two short period comets
Fraser, D.↗
Search for microwave H2O emission in Comet Bennett /1969i/
Microwave water emission in Comet Bennett, deriving column density for various temperatures of cometary gas
Clark, T. A.↗
Halley's Comet flythrough and rendezvous missions via solar electric propulsion
Solar electric propulsion application to Halley Comet flythrough and rendezvous missions, describing trajectory characteristics and payload capabilities
Friedlander, A. L.↗
Early missions to comets
Two specific early missions to the comets Grigg-Skjellerup in 1977 and Encke in 1980 are proposed as precusor missions to Encke rendezvous and Halley intercept in 1986. The mission guidelines and principal objectives are presented. The spacecraft IMP was chosen for the flythrough mission for Grigg-Skjellerup in 1977, and the Helios spacecraft for the Encke mission in 1980. The mission trajectories are summarized in graphs.
Farquhar, R. W.↗
Comets and asteroids: A strategy for exploration
The initial phases in the genesis of the solar system are examined. Particular attention is given to asteroids and comets.
Source record↗