{"created":"2023-06-20T14:36:32.005141+00:00","id":2851,"links":{},"metadata":{"_buckets":{"deposit":"03e6c925-bcdb-4ce8-af0c-4612af35aea6"},"_deposit":{"created_by":1,"id":"2851","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2851"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002851","sets":["1398:1501:1502","1543:1827:1828","1887:1891","9:789:794:795"]},"author_link":["9377","9366","9374","9370","9376","9368","9371","9367","9372","9373","9375","9364","9365","9369"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"運用終了した技術試験衛星「きく８号」のライトカーブと形状モデル"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-03-07","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"589","bibliographicPageStart":"577","bibliographicVolumeNumber":"JAXA-SP-18-011","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料: 第8回スペースデブリワークショップ講演資料集"},{"bibliographic_title":"JAXA Special Publication: Proceedings of the 8th Space Debris Workshop","bibliographic_titleLang":"en"}]}]},"item_4_description_14":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"第8回スペースデブリワークショップ (2018年12月3-5日. 宇宙航空研究開発機構調布航空宇宙センター(JAXA)(CAC)), 調布市, 東京","subitem_description_type":"Other"}]},"item_4_description_15":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）（英）","attribute_value_mlt":[{"subitem_description":"The 8th Space Debris Workshop (December 3-5, 2018. Chofu Aerospace Center, Japan Aerospace Exploration Agency (JAXA)(CAC)), Chofu, Tokyo, Japan","subitem_description_type":"Other"}]},"item_4_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"2017年1月に運用を停止した技術試験衛星「きく8号」(ETS-8)のライトカーブを取得し、得られたライトカーブからその回転状態について考察を行った。目的衛星を望遠鏡で追尾した状態で、シャッターを開けたまま露出を行う方法（TDI）によりトレイルしたイメージを取得し、その時間方向のプロファイルから光度の時間変動の情報（ライトカーブ）を得た。得られたライトカーブを再現するために衛星を衛星本体、太陽電池パドル、大型アンテナの各パーツに分けたモデルを考え、各パーツにおける形状と反射特性を仮定し、太陽光の反射光の強度変化を計算した。本体については拡散反射、アンテナについては拡散反射と鏡面反射の両方の成分を仮定、太陽電池パドルのパネルは拡散反射と鏡面反射の中間的な反射特性を仮定した。ある特定軸の周りに回転している状態を仮定し、各パーツからの反射光の変動に各パーツの反射率と面積をかけた係数を乗算し、それを足し合わせる事により観測されたライトカーブを再現することができた。","subitem_description_type":"Abstract"}]},"item_4_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Inactive artificial objects, such as old satellites, spent rocket bodies, and fragments from disintegration, are often rotating and tumbling. Light curves derived from photometric observations are one of the most effective techniques for examining the physical characteristics of such space objects. Light curve observations were done for the Engineering Test Satellite, ETS-8, decommissioned in January 2017. It exhibits time variation in its brightness after the decommission. Observations of ETS-8 were done using the CCD device with TDI method, of which an exposure is made by shifting electrical charge while a mechanical shutter is open. Light curve data was extracted from the profile of the trailed image caused by parallel charge transfer. We tried to reproduce the observed light curve using a simple shape model. In the model, the satellite was divided into three parts (main body, solar cell paddle, and large antenna). The characteristic of each surface was assumed to be diffuse reflection and/or specular reflection, then the brightness variation in each surface was calculated when rotating. The brightness of each part was added together after multiplied by each appropriate reflectance and surface area, then the observed light curve was reproduced.","subitem_description_type":"Other"}]},"item_4_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_4_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_4_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA1830034047","subitem_description_type":"Other"}]},"item_4_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-18-011","subitem_description_type":"Other"}]},"item_4_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構(JAXA)"}]},"item_4_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_4_source_id_22":{"attribute_name":"ISSNONLINE","attribute_value_mlt":[{"subitem_source_identifier":"2433-2232","subitem_source_identifier_type":"ISSN"}]},"item_4_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"},{"subitem_text_value":"日本スペースガード協会(JSGA)"}]},"item_4_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"},{"subitem_text_language":"en","subitem_text_value":"Japan Spaceguard Association (JSGA)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"奥村, 真一郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西山, 広太"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"藤原, 智子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"浦川, 聖太郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"二村, 徳宏"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"浅見, 敦夫"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"白井, 正明"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Okumura, Shinichiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nishiyama, Kota","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Fujiwara, Tomoko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Urakawa, Seitaro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nimura, Tokuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Asami, Atsuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shirai, Masaaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-15"}],"displaytype":"detail","filename":"AA1830034047.pdf","filesize":[{"value":"3.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"AA1830034047.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2851/files/AA1830034047.pdf"},"version_id":"011c44eb-8f90-453a-b8eb-4f04639d0e10"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Observed light curve and its shape model of the decommissioned satellite ETS-8","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Observed light curve and its shape model of the decommissioned satellite ETS-8","subitem_title_language":"en"}]},"item_type_id":"4","owner":"1","path":["795","1502","1828","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-15"},"publish_date":"2019-03-15","publish_status":"0","recid":"2851","relation_version_is_last":true,"title":["Observed light curve and its shape model of the decommissioned satellite ETS-8"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:15:05.292730+00:00"}