ဆလီနီအာကာသယာဉ်
ဂျပန်နိုင်ငံတွင် ဒဏ္ဍာရီလာ လနတ်သမီးအမည်ဖြစ်သော ကာဂူယာ (かぐや)ဟူသော နာမည်ပြောင်ဖြင့်လူသိများသည့် ဆလီနီ (/ˈsɛlɪniː/; Selenological and Engineering Explorer)အာကာသယာဉ်သည် ဂျပန်တို့၏ ဒုတိယမြောက်လပတ်အာကာသယာဉ်ဖြစ်သည်။[၁] Produced by the Institute of Space and Astronautical Science (ISAS) and the National Space Development Agency (NASDA), both now part of the Japan Aerospace Exploration Agency (JAXA), the spacecraft was launched on September 14, 2007. After successfully orbiting the moon for a year and eight months, the main orbiter was instructed to impact on the lunar surface near the Gill lunar crater at 18:25 UTC on June 10, 2009.[၂] The orbiter's nickname, Kaguya, was selected by the general public. It comes from the name of a lunar princess in the ancient Japanese folktale The Tale of the Bamboo Cutter.[၃] After their successful release, its sub-satellites, Rstar and Vstar, were named Okina and Ouna, also derived from characters in the tale.[၄] ခရီးစဉ်ရည်မှန်းချက်များမက်ရှင်၏ သိပ္ပံဆိုင်ရာ ကိရိယာ ရည်ရွယ်ချက်များမှာ:
တို့ဖြစ်သည်။ ပစ်လွှတ်ခြင်း ဆလီနီအာကာသယာဉ်ကို ၂၀၀၇ခုနှစ်၊ စက်တင်လာလ ၁၄ရက်နေ့တွင် 01:31:01 UTC တွင် H-IIA (Model H2A2022) သယ်ယူပို့ဆောင်ရေးဒုံးပျံဖြင့် Tanegashima Space Center မှ---into a ၂၈၁.၅၅-ကီလိုမီတာ (၁၇၄.၉၅-မိုင်) (perigee) / ၂၃၂,၉၆၀-ကီလိုမီတာ (၁၄၄,၇၅၀-မိုင်) (apogee) geocentric parking orbit.[၅][၆] The total launch mass was ၃,၀၂၀ ကီလိုဂရမ် (၆,၆၆၀ ပေါင်).[၇] The SELENE mission was originally scheduled to launch in 2003, but rocket failures on another mission and technical difficulties delayed the launch until 2007.[၈] Launch was planned for August 16, 2007, but was postponed when some electronic components were found to be installed incorrectly.[၉] Lunar operationsOn October 3, it entered an initial ၁၀၁-to-၁၁,၇၄၁-ကီလိုမီတာ (၆၃-to-၇,၂၉၆-မိုင်) polar lunar orbit.[၁၀] On October 9, the relay satellite was released into a ၁၀၀-to-၂,၄၀၀-ကီလိုမီတာ (၆၂-to-၁,၄၉၁-မိုင်) orbit, while on October 12 the VLBI satellite was released into a ၁၀၀-to-၈၀၀-ကီလိုမီတာ (၆၂-to-၄၉၇-မိုင်) one.[၄] Finally, by October 19, the orbiter was in a circular ၁၀၀-ကီလိုမီတာ (၆၂-မိုင်) orbit.[၁၁] The nominal mission duration was one year plus possible extensions. On October 31, 2007, Kaguya deployed its Lunar Magnetometer, Lunar Radar Sounder, Earth-looking Upper Atmosphere and Plasma Imager. On December 21, 2007, Kaguya began regular operations after all fifteen observation experiments had been satisfactorily verified. Kaguya completed the planned operation by the end of October 2008 and began extended operations planned to continue through March 2009. It would then be sent into a circular ၅၀-ကီလိုမီတာ (၃၁-မိုင်) orbit, and finally to an elliptical ၂၀-to-၁၀၀-ကီလိုမီတာ (၁၂-to-၆၂-မိုင်) one, with a controlled impact occurring by August 2009.[၁၂] Because of a degraded reaction wheel, the plan was changed so that on February 1, 2009, the orbit was lowered to ၅၀ ကီလိုမီတာ (၃၁ မိုင်) ± ၂၀ ကီလိုမီတာ (၁၂ မိုင်),[၁၃] and impact occurred at 18:25 UTC on June 10, 2009.[၂] ဒီဇိုင်းခရီးစဉ်တွင် သီးခြားအာကာသယာဉ်သုံးခုပါဝင်သည်။ ပင်မလပတ်ယာဉ်[၇]
အိုကီနာ ( relay ဂြိုဟ်တုငယ်)Okina (formerly Rstar) and Ouna (formerly Vstar) were octagonal prisms to support radio science. Okina relayed radio communications between the orbiter and the Earth when the orbiter was behind the Moon. This allowed, for the first time, the direct Doppler shift measurements needed to precisely map the gravitational field of the lunar farside; previously, the farside gravity field could only be inferred by nearside measurements. The relay satellite impacted the lunar farside near the Mineur D crater at 19:46 JST (10:46 UTC) on February 12, 2009.[၁၃]
အူနာ (VLBI ဂြိုဟ်တု)Ouna used Very Long Baseline Interferometry as a second way to map the Moon's gravity field. It was especially useful at the lunar limb, where the gravitational acceleration is perpendicular to the line of sight to earth, making Doppler measurements unsuitable.
ဝန်ဆလီနီတွင် လ၏မူလနှင့်ပြောင်းလဲဖြစ်ထွန်းမှုဆိုင်ရာအချက်အလက်များနှင့် အနာဂတ်လစူးစမ်းလေ့လာရေးနည်းပညာဖွံ့ဖြိုးတိုးတက်မှုအတွက် သိပ္ပံကိရိယာ ၁၃မျိုးကိုတင်ဆောင်သွားခဲ့သည်။ [၁၄]
Two 2.2 megapixel CCD HDTV cameras, one wide-angle and one telephoto, were also on board, primarily for public relations purposes.[၁၆] JAXA collected names and messages that were carried on SELENE through their "Wish Upon the Moon" campaign.[၁၇] 412,627 names and messages were printed on a sheet measuring 280 mm x 160 mm (11 x 6.3 in) at 70 µm (0.0003 in) per character. The sheet was installed under the photovoltaic modules and cooling panels beneath the multi-layered insulation.[၁၈] ရလဒ်များအဓိကရလဒ်များမှာ:
အခြား လကမ္ဘာသွားယာဉ်များဆလီနီသည် အပိုလိုစီမံကိန်းပြီးလျင် ဆန်းသစ်သော အကြီးမားဆုံး လကမ္ဘာသွားစီမံကိန်း၏ အစိတ်အပိုင်းဖြစ်သည်။[၂၂] It followed Japan's first lunar probe, Hagoromo, launched in 1990.[၁][၂၃] China launched its Chang'e 1 lunar explorer on October 24, 2007, followed by India's 22 October 2008 launch of Chandrayaan-1 and the United States Lunar Reconnaissance Orbiter in June 2009. The United States, European countries (ESA), Russia, Japan, India and China are planning future manned lunar exploration missions or lunar outpost construction on the Moon between 2018 and 2025.[၂၄] ကြည့်ရန်မှီငြမ်း
ပြင်ပချိတ်ဆက်ရန် ဝီကီသတင်းရှိ ဆက်စပ်သတင်းများ :
Japan's lunar probe performing 'smoothly' after successful launch
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