Curriculum Vitaes
Profile Information
- Affiliation
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Degree
- Doctor of Science(Mar, 1989, The University of Tokyo)
- Contact information
- yoshikawa.makoto
jaxa.jp - J-GLOBAL ID
- 200901037361657011
- researchmap Member ID
- 1000304540
Research Interests
6Research Areas
2Research History
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Apr, 1998 - Sep, 2003
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Apr, 1991 - Mar, 1998
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Dec, 1996 - Dec, 1997
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Apr, 1989 - Mar, 1991
Education
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Apr, 1984 - Mar, 1989
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Apr, 1980 - Mar, 1984
Committee Memberships
9-
Oct, 2020 - Present
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Apr, 1994 - Present
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Jan, 2013 - Mar, 2015
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Jan, 2011 - Dec, 2012
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2009 - 2011
Awards
2-
Nov, 2019
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Dec, 2018
Papers
260-
European Space Agency, (Special Publication) ESA SP, (500) 277-279, Jul, 2002During the 2001 Leonids storm over Japan, several short-duration "outbursts" in which more than 20-40 meteors appeared in a few seconds, have been reported. The meteors in these events were extremely localized within a few hundred km, which indicate the recent fragmentation of meteoroids during the orbital motion in the interplanetary space. Considering the extent of the spatial distribution, the fragmentation should have occurred at around the perihelion passage of the meteoroids just before encountering the Earth. This suggests the possible existence of the glue, which connects several refractory particles in fresh meteoroids.
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European Space Agency, (Special Publication) ESA SP, (500) 331-333, Jul, 2002The MUSES-C mission is the first sample return mission from asteroid. It will be launched in the end of 2002, arrive at one of the Near-Earth Asteroid (25143) 1998 SF36 in 2005, and come back to the Earth in 2007. In this paper, the orbital evolution of this target asteroid is studied. Since this asteroid is almost in the ecliptic plane and the orbit crosses the orbits of the Earth and Mars, many close encounters with the Earth and Mars occur. Therefore, the motion of this asteroid is chaotic. We studied the orbital evolution of this asteroid by calculating the motions for many similar initial conditions. The results show that it is most probable that this asteroid exist around the present orbit for about several thousand years to the past or maybe for much longer period.
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Proceedings of SPIE - The International Society for Optical Engineering, 4836 83-87, 2002We developed a new 1.0 m telescope with a 3 degree flat focal plane to which a mosaic CCD camera with 10 2k×4k chips is fixed. The system was set up in February 2002, and is now undergoing the final fine adjustments. Since the telescope has a focal length of 3 m, a field of 7.5 square degrees is covered in one image. In good seeing conditions, 1.5 arc seconds, at the site located in Bisei town, Okayama prefecture in Japan, we can expect to detect down to 20th magnitude stars with an exposure time of 60 seconds. Considering a read-out time, 46 seconds, of the CCD camera, one image is taken in every two minutes, and about 2,100 square degrees of field is expected to be covered in one clear night This system is very effective for survey work, especially for Near-Earth-Asteroid detection.
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Journal of the Communications Research Laboratory, 48(1) 143-150, Mar, 2001Radar observations of two near-Earth asteroids were performed using a bi-static radar technique with Kashima 34-m antenna and Usuda 64-m antenna as receiving stations and Goldstone 70-m antenna as a transmitting station. The asteroid 6489 Golevka was observed on June 15, 1995 when its distance from the Earth became 0.048 AU and the radar echo from the asteroid was detected from the data observed with Kashima 34-m antenna. The success of the trans-continental bistatic radar observations became the first detection of a radar echo from a solar system object beyond Moon in Japan. The asteroid 4197 (1982 TA) was observed on October 24, 1996 when its distance to the Earth became 0.086 AU. The radar echo signal from the asteroid was detected from both of the data observed at Kashima and at Usuda. The received signal was coherently sampled and recorded at both stations. By using these data, interferometric data analysis was examined.
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Science and Technology Series, 100 75-84, 2001Leonids meteoroids raised attention in space organizations in the world due to probable collision hazards to artificial satellites. This paper describes the plan of the Leonids measurement campaign in Japan and the results. The correlation between optical and radiowave observations was especially focused on. The countermeasures to lessen the Leonids hazards to satellites will also be presented.
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Annals of the New York Academy of Sciences, 822 140-144, 1997The Spaceguard Project proposes to set up a network of five ground-based telescopes, each with an aperture of 2-3 m. With ground-based telescopes, there is a blind celestial area surrounding the Sun (say, within 30 degrees), in which an asteroid approaching the Earth cannot be detected optically because of bright sky background. Our study shows that the number of close approaches of asteroids coming from this area to within a minimum distance of less than 0.01 AU of the Earth is more than 30% of the total.
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Earth, Moon and Planets, 72(1-3) 263-266, 1996We have estimated close asteroid encounters with the Earth by numerical integrations of a system with the Sun, 9 planets, and 188 near-earth-asteroids during the period 1994-4600. Asteroids approach the Earth from directions within 30° around the Sun in more than 20% of encounters with the closest distance less than 0.01 AU. Since groundbased observations cannot detect these objects, we should develop space-borne and/or lunar observatories in a short time to allow enough warning time before a catastrophic collision. © 1996 Kluwer Academic Publishers.
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Proceedings of the IEICE General Conference, 14(1) 625-626, 1996The Communications Research Laboratory (CRL) is aiming to develop gigabit satellite communication systems for the global information infrastructure (GII). As a first step, CRL planned high data rate (HDR) satellite communications experiments using the Japanese Engineering Test Satellite-VI (ETS-VI). ETS-VI failed to reach a geostationary orbit, however, and CRL then decided to use the NTT satellite known as N-Star for the HDR satellite communications experiment. In this experiment, we planned a data rate of 156 Mbps through a Ka-band transponder with a bandwidth of 200 MHz. Data was transmitted as an HDTV signal in our plan. In this paper, we introduce the configuration of this experimental system and the experimental items. Our next application experiment plans are also explained.
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Proc. of "Asteroids, Comets, Meteors 1991" (Lunar & Planetary Institute, Houston, Texas), 433-438, 1992
Misc.
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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ASTROPHYSICAL JOURNAL LETTERS, 935(1), Aug 16, 2022We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection of all major presolar grain types with O- and C-anomalous isotopic compositions typically identified in carbonaceous chondrite meteorites: 1 silicate, 1 oxide, 1 O-anomalous supernova grain of ambiguous phase, 38 SiC, and 16 carbonaceous grains. At least two of the carbonaceous grains are presolar graphites, whereas several grains with moderate C isotopic anomalies are probably organics. The presolar silicate was located in a clast with a less altered lithology than the typical extensively aqueously altered Ryugu matrix. The matrix-normalized presolar grain abundances in Ryugu are 4.8$^{+4.7}_{-2.6}$ ppm for O-anomalous grains, 25$^{+6}_{-5}$ ppm for SiC grains and 11$^{+5}_{-3}$ ppm for carbonaceous grains. Ryugu is isotopically and petrologically similar to carbonaceous Ivuna-type (CI) chondrites. To compare the in situ presolar grain abundances of Ryugu with CI chondrites, we also mapped Ivuna and Orgueil samples and found a total of SiC grains and 6 carbonaceous grains. No O-anomalous grains were detected. The matrix-normalized presolar grain abundances in the CI chondrites are similar to those in Ryugu: 23 $^{+7}_{-6}$ ppm SiC and 9.0$^{+5.3}_{-4.6}$ ppm carbonaceous grains. Thus, our results provide further evidence in support of the Ryugu-CI connection. They also reveal intriguing hints of small-scale heterogeneities in the Ryugu samples, such as locally distinct degrees of alteration that allowed the preservation of delicate presolar material.
Books and Other Publications
19Presentations
32Teaching Experience
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Apr, 2019 - Present太陽と太陽系の科学 (放送大学)
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Apr, 2011 - Present位置天文学・天体力学 (東京大学)
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Apr, 2007 - Present宇宙科学 (玉川大学)
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Apr, 2006 - PresentSpace System Engineering 3 (The Graduate University for Advanced Studies)
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2006 - Present宇宙工学概論 (総合研究大学院大学)
Professional Memberships
3Research Projects
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2026
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2016 - Mar, 2019
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2006
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2005
