Zobrazeno 1 - 10
of 23
pro vyhledávání: '"K. D. Rosema"'
Autor:
Donald B. Campbell, Steven J. Ostro, John F. Chandler, Raymond F. Jurgens, Donald K. Yeomans, Lance A. M. Benner, R. Scott Hudson, K. D. Rosema, Irwin I. Shapiro
Publikováno v:
Icarus. 158:379-388
We report Doppler-only (cw) radar observations of basaltic near-Earth asteroid 3908 Nyx obtained at Arecibo and Goldstone in September and October of 1988. The circular polarization ratio of 0.75±0.03 exceeds ∼90% of those reported among radar-det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ce2b3be7657a94326cf78104a87fdcf
https://doi.org/10.1006/icar.2002.6869
https://doi.org/10.1006/icar.2002.6869
Publikováno v:
Icarus. 156:580-583
Arecibo radar echo spectra show the Q-class asteroid 1862 Apollo to have an elongation within 10% of 1.27, a pole-on silhouette with an average dimension of about 1.7 km, and disc-integrated radar properties that are typical for radar-detected near-E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5f2ab1a0582772a736e0407c0fd5ee5
https://doi.org/10.1006/icar.2001.6805
https://doi.org/10.1006/icar.2001.6805
Autor:
Daniel J. Scheeres, D. Choate, C. R. Franck, M. N. Meshkov, Jon D. Giorgini, Steven J. Ostro, D. Howard, D. Kelley, R. A. Cormier, R. Winkler, Alan W. Harris, Akiko M. Nakamura, Martin A. Slade, Alexander L. Zaitsev, Yusei Koyama, R. S. Hudson, R. Littlefair, P. W. Chodas, R. Frye, D. K. Yeomans, Lance A. M. Benner, Patrick Palmer, Randy Rose, David L. Mitchell, K. D. Rosema, Raymond F. Jurgens, Michael Thomas
Publikováno v:
Icarus. 148:37-51
We report 8510-MHz (3,5-cm) radar observations of the Earth crossing asteroid (ECA) 6489 Golevka (1991 JX) obtained between June 3 and June 15, 1995, at Goldstone, the Very Large Array and the Evpatoria (Ukraine) and Kashima (Japan) radio antennas.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d16aa42f994b1fb4349ff861179cad0c
https://doi.org/10.1006/icar.2000.6483
https://doi.org/10.1006/icar.2000.6483
Autor:
Lance A. M. Benner, Donald B. Campbell, Alan W. Harris, John F. Chandler, Irwin I. Shapiro, Michael K. Shepard, K. D. Rosema, Steven J. Ostro
Publikováno v:
Icarus. 147:520-529
We report Doppler-only (cw) radar observations of near-Earth Asteroid 2100 Ra-Shalom obtained at the Arecibo Observatory using a transmitter frequency of 2380 MHz (12.6 cm) on 1984 Aug. 18–22. Weighted and filtered sums of cw echoes achieve a maxim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64eb96086cda0b6c00500498c39b0ae9
https://doi.org/10.1006/icar.2000.6470
https://doi.org/10.1006/icar.2000.6470
Autor:
K. D. Rosema, Lance A. M. Benner, P.R. Mahapatra, Martin A. Slade, Donald K. Yeomans, Raymond F. Jurgens, Randy Rose, Jon D. Giorgini, Steven J. Ostro, R. Winkler
Publikováno v:
Planetary and Space Science. 47:987-995
We report Doppler-only radar observations of Icarus at Goldstone at a transmitter frequency of 8510 MHz (3.5 cm wavelength) during 8-10 June 1996, the first radar detection of the object since 1968. Optimally filtered and folded spectra achieve a max
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd20e358a14afbeb2c756786691ed7ef
https://doi.org/10.1016/s0032-0633(99)00015-x
https://doi.org/10.1016/s0032-0633(99)00015-x
Autor:
Donald K. Yeomans, John F. Chandler, David L. Mitchell, Jon D. Giorgini, Steven J. Ostro, Irwin I. Shapiro, Christopher Magri, K. D. Rosema, Donald B. Campbell, Michael Thomas
Publikováno v:
Icarus. 140:379-407
We report detailed results of Arecibo and Goldstone radar observations of 30 mainbelt asteroids (MBAs) during 1980-1997. In addition to estimates of radar cross section, radar albedo, and circular polarization ratio, we obtain new pole constraints fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6763899aa6e5d8e0cc0116d50155cfc6
https://doi.org/10.1006/icar.1999.6130
https://doi.org/10.1006/icar.1999.6130
Autor:
K. D. Rosema, Martin A. Slade, Michael Thomas, David L. Mitchell, R. Scott Hudson, Raymond F. Jurgens, Lance A. M. Benner, Randy Rose, Donald K. Yeomans, Petr Pravec, Jon D. Giorgini, Steven J. Ostro, R. Winkler
Publikováno v:
Icarus. 139:309-327
We report Doppler-only (cw) and delay-Doppler radar observations of Bacchus obtained at Goldstone at a transmitter frequency of 8510 MHz (3.5 cm) on 1996 March 22, 24, and 29.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2597fc6d8827cb7106dacbd87b63233b
https://doi.org/10.1006/icar.1999.6094
https://doi.org/10.1006/icar.1999.6094
Autor:
R. A. Cormier, Randy Rose, Donald K. Yeomans, Ron Littlefair, R. Scott Hudson, Paul W. Chodas, Lance A. M. Benner, Raymond F. Jurgens, Jon D. Giorgini, Steven J. Ostro, R. Winkler, Michael Thomas, K. D. Rosema, Dan Kelley, D. Choate, Martin A. Slade
Publikováno v:
Icarus. 137:122-139
We report initial results of daily delay/Doppler observations of Toutatis with the Goldstone 8510-MHz (3.5-cm) radar during November 25 - December 3, 1996. Using the physical model of Toutatis derived form 1992 radar observations (Hudson and Ostro 19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::766954b7e421d3dca87acf848bb1771c
https://doi.org/10.1006/icar.1998.6031
https://doi.org/10.1006/icar.1998.6031
Publikováno v:
Icarus. 131:4-14
We use new analysis techniques to constrain the shape of 433 Eros with Goldstone radar data obtained during the asteroid's close approach in 1975. A previous analysis of these data (Ostro, Rosema, and Jurgens, 1990, Icarus 84, 334–351) used estimat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bbed6c8df034817bb0b3f086e1d4f59
https://doi.org/10.1006/icar.1997.5815
https://doi.org/10.1006/icar.1997.5815
Autor:
Raymond F. Jurgens, R. A. Cormier, Paul W. Chodas, Lance A. M. Benner, David L. Mitchell, Randy Rose, K. D. Rosema, Michael Thomas, Martin A. Slade, D. Kelley, D. Choate, D. K. Yeomans, J. K. Harmon, Jon D. Giorgini, Steven J. Ostro, R. Winkler
Publikováno v:
Science. 278:1921-1924
Radar observations of comet Hyakutake (C/1996 B2) made at the Goldstone Deep Space Communications Complex in California have detected echoes from the nucleus and from large grains in the inner coma. The nucleus of this bright comet was estimated to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60c4d6b37ec6e73343a348e45c76378f
https://doi.org/10.1126/science.278.5345.1921
https://doi.org/10.1126/science.278.5345.1921