{"id":41695,"date":"2026-05-22T18:38:54","date_gmt":"2026-05-22T16:38:54","guid":{"rendered":"https:\/\/karmaka.de\/?p=41695"},"modified":"2026-05-22T18:38:55","modified_gmt":"2026-05-22T16:38:55","slug":"overview-of-hayabusa2-extended-missions-flyby-of-near-earth-asteroid-98943-torifune-2","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=41695","title":{"rendered":"Overview of Hayabusa2 Extended Mission\u2019s Flyby of Near-Earth Asteroid (98943) Torifune<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Masatoshi Hirabayashi, Masahiko Hayakawa, Yuya Mimasu, Naru Hirata, Takuya Iwaki, Shunichi Kamata, Kohei Kitazato, Toru Kouyama, Naoya Sakatani, Hajime Yano<\/p>\n\n\n\n<p>The Planetary Science Journal, Volume 7, Number 5, Published: 22 May 2026<\/p>\n\n\n\n<p><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/ae5f79\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/ae5f79\/pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The Hayabusa2 extended mission, nicknamed Hayabusa2# (# is pronounced SHARP, which stands for the Small Hazardous Asteroid Reconnaissance Probe), is JAXA\u2019s small body explorer to conduct science and engineering investigations in space. After the successful return to the Earth with the samples from the carbonaceous asteroid (162173) Ryugu on 2020 December 6, Hayabusa2 diverted away from Earth to start its decade-long extended mission. The major scope includes an engineering demonstration of long-term maintenance strategies for spacecraft and operation systems and scientific investigations during various mission phases. Major scientific investigations include spacecraft-based telescopic observations of exoplanets and zodiacal dust observations during the cruise phase, flyby observations of the near-Earth asteroid (98943) Torifune in 2026 July, and rendezvous observations of near-Earth asteroid 1998 KY26 in 2031. This study overviews Hayabusa2#\u2019s flyby and the physical properties of Torifune. Although the flyby operation planning is still ongoing, the mission will attempt to fly by the target at a distance (from the asteroid\u2019s center) of 1\u201310 km. The flyby speed is planned to be 5.25 km s\u22121, while the encounter location is 0.81 au from the Sun. The mission plans to fix the spacecraft\u2019s orientation during the flyby, only allowing for a very limited pointing change to attain higher-resolution imaging. The mission will attempt to obtain science and engineering returns during the flyby. The planned investigations will offer stronger insights into material transport mechanisms in the inner solar system and a demonstration of planetary defense technologies.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Masatoshi Hirabayashi, Masahiko Hayakawa, Yuya Mimasu, Naru Hirata, Takuya Iwaki, Shunichi Kamata, Kohei Kitazato, Toru Kouyama, Naoya Sakatani, Hajime Yano The Planetary Science Journal, Volume 7, Number 5, Published: 22 May 2026 LINK (OPEN ACCESS)PDF&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77,7120,181],"tags":[7122,1854,7121,4827,270],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41695"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41695"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41695\/revisions"}],"predecessor-version":[{"id":41696,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41695\/revisions\/41696"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}