to be launched on 24 Nov, 2020 ( previous was Oct, 2020)
landing site:
Mons Rümker
Unlike Chang'e 4 which was equipped with a radioisotope heater unit to survive the extreme cold of lunar night, the Chang’e-5 landing and sampling need to take place within a single, 14-Earth-day lunar daytime.
TCM-1: 14:00 UTC 24 Nov 2020
TCM-2 and -3: TBA
112 hours to moon.
sunrise over Mons rumker landing site on late 27 Nov
Lunar orbit insertion to a 200 km elliptical orbit on 28 Nov
嫦娥五号探测器需要进入近地点200公里、远地点约41万公里的地月转移轨道，对运载火箭的能力提出了很高的要求。
Lunar landing: 20:30 UTC 29 Nov
The total mission is expected to last a total of 23 days until landing in Dorbod Banner, Inner Mongolia, around December 16–17. Samples would then be transferred to specially developed facilities for handling, analyzing, and storing the lunar material.
嫦娥五号任务计划实现三大工程目标：
一是突破窄窗口多轨道装订发射、月面自动采样与封装、月面起飞、月球轨道交会对接、月球样品储存等关键技术，提升我国航天技术水平;
二是实现我国首次地外天体自动采样返回，推动我国科学技术重大进步;
三是完善探月工程体系，为我国未来开展载人登月与深空探测积累重要的人才、技术和物质基础。
J McDowell's estimated masses of probe elements(in kg):
DS Descent Stage/lander: 1 metric ton + 3800kg fuel,
SM Service Module/orbiter 2500 (3000),
AS Ascent Stage 400 (509),
RV Reentry Vehicle 330,
AD Adapter 250,
DA Docking Adapter 50
8200 kg in total
TLE from Scott Tilley:
1 47097U 20087A 20329.00000000 .00000000 00000-0 00000-0 0 03 2 47097 21.3210 1.7189 9429959 231.4006 5.9004 0.09482118 08 # 20201124.18-20201124.30, 7 measurements, 0.203 deg rms
Satellite Catalog No(Norad): 47097
29 Nov 2020 UTC 20:40
phase 4
原文網址：https://www.881903.com/news/china/2368546
中國探月工程「嫦娥五號」探測器組合體順利分離。「嫦娥五號」昨晚在近月點再次「剎車」制動，飛行軌道從橢圓環月軌道，變為近圓形環月軌道。到30號凌晨4時40分(UTC20:40)，著陸器和上升器組合體，與軌道器和返回器組合體在人員控制下成功分離。著陸器和上升器組合體將會擇機實施月面軟著陸，進行自動採樣等後續工作。而軌道器和返回器組合體將會繼續在環月軌道上飛行，等待上升器交會對接。 國家航天局指目前嫦娥五號探測器各系統狀態良好，地面測控通信正常。
phase 5
1 Dec 2020 15:11 UTC
successful landed. 43.1 N, 51.8W
4 Dec
The LROC team computed the coordinates of the lander to be 43.0576° N, 308.0839°E(51.9161°W), –2570 m elevation, with an estimated accuracy of plus-or-minus 20 meters.
原文網址：https://www.881903.com/news/china/2368546
manipulator arm and sample cannister developed by hk polyu
re-entry: boost-glide
soil samples content
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