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DESTINY+

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DESTINY+
NamesDemonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby and dUst Science
Mission typeAsteroidflyby
OperatorISAS/JAXA
Websitehttp://destiny.isas.jaxa.jp/
Mission duration≥4 years (planned)
cruise: ≈2 years[1]
Spacecraft properties
ManufacturerNEC Corporation
Launch mass480 kg (1,060 lb)
including 60 kg ofxenonand 15.4 kg ofhydrazine[2]
Power4.7 kW[2]fromsolar panels
Start of mission
Launch date2025 (planned)[3]
RocketEpsilon S[4]
Launch siteUchinoura Space Center
ContractorJAXA
Orbital parameters
Reference systemGeocentric orbit
RegimeLow Earth orbit
Perigee altitude230 km (140 mi)
Apogee altitude40,000 km (25,000 mi)
Inclination30.0°
Flyby of3200 Phaethon
Closest approach2029 (planned)[5]
Transponders
BandX-band[2]
Instruments
DESTINY Dust Analyzer (DDA)
Telescopic Camera for Phaethon (TCAP)
Multiband Camera for Phaethon (MCAP)
Medium-class Science Program
←SLIM

DESTINY+(Demonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby and dUst Science) is a planned mission to flyby theGeminidsmeteor shower parent body3200 Phaethon,and sample dust originating from the "rock comet".[6]The spacecraft is being developed by the Japanese space agencyJAXA,and will demonstrate advanced technologies for future deep space exploration. As of 2023, DESTINY+is planned to be launched in 2025.[3]

Overview[edit]

DESTINY+will be launched fromUchinoura Space Centerby anEpsilon Slaunch vehicleintolow Earth orbit,and will spend 1.5 years raising its orbit with ion engines.[2]A lunar flyby (at ~300,000 km (190,000 mi)) will accelerate the probe into an interplanetary orbit. During this cruise time it will fly by a fewnear Earth objectsfor study, including the transition body3200 Phaethonin 2029, as well as measure interplanetary andinterstellar dust.[7][5]

The probe's ion engines have the capability to perform another orbit transfer to study additional objects.[1]

Objectives[edit]

DESTINY+will be a technology demonstrator to further improve operations of low cost solar electric propulsion in deep space. It will also demonstrate innovative light-weight solar array panel technology. The scientific aspect of this mission is to understand origin and nature ofdusts,which are key sources oforganic compoundsto Earth. It will also observe dusts from comet/asteroid 3200 Phaethon using a dust analyzer and will map its surface using a multiband telescopic camera to understand the mechanisms of dust ejection.[2]The spacecraft will come as close as 500 km (310 mi) from 3200 Phaethon.[2]

Spacecraft[edit]

DESTINY+will useultra light-weight solar panelsand heat-actuated folding radiators, along with compact avionics. The spacecraft is designed to tolerate a radiation dose up to approximately 30kradby using a 3 mmaluminumshield.[2]

Propulsion[edit]

The spacecraft will be propelled by four μ10solar electric ion engines,[2]as used byHayabusaandHayabusa2,but while its predecessors operated only up to three engines simultaneously, DESTINY+will use all four simultaneously[8]for a total thrust of 40mN(specific impulse: 3000 seconds; acceleration: 83 μm/s2;power: 1670watts.[2]) The total dry mass (excludes xenon propellant) of the ion engine system is 59 kg (130 lb).[2]

Payload[edit]

DESTINY+will carry three scientific instruments:[7]

  • DESTINY Dust Analyzer (DDA)— The DESTINY Dust Analyzer (2.7 kg) will be provided by theGerman Aerospace Center(DLR),[9]and is being developed by theUniversity of Stuttgart.[2][4]
  • Telescopic Camera for Phaethon (TCAP)— The telescopic camera has a mass of 15.8 kg.[2]
  • Multiband Camera for Phaethon (MCAP)— The multiband camera has a mass of 3.5 kg and will detect light in 390 nm, 550 nm, 700 nm, 850 nmwavelengths.[2]

See also[edit]

References[edit]

  1. ^abDESTINY Mission OverviewYasuhiro KAWAKATSU JAXA
  2. ^abcdefghijklmToyota, Hiroyuki; Nishiyama, Kazutaka; Kawakatsu, Yasuhiro (15 August 2017)."DESTINY+: Deep Space Exploration Technology Demonstrator and Explorer to Asteroid 3200 Phaethon"(PDF).Low-Cost Planetary Missions Conference. Archived fromthe original(PDF)on 14 September 2017.Retrieved21 September2017.
  3. ^abJones, Andrew (6 November 2023)."Japan's mission to bizarre asteroid Phaethon delayed to 2025".Space.Retrieved18 December2023.
  4. ^ab"DESTINY+ – Germany and Japan begin new asteroid mission".German Aerospace Center (DLR). 12 November 2020.Retrieved15 November2020.
  5. ^abSommer, M.; Krüger, H.; Srama, R.; Hirai, T.; Kobayashi, M.; Arai, T.; Sasaki, S.; Kimura, H.; Moragas-Klostermeyer, G.; Strub, P.; Lohse, A.-K. (21 September 2020).Destiny+ Dust Analyzer – Campaign and timeline preparation for interplanetary and interstellar dust observation during the 4-year transfer phase from Earth to Phaethon.Europlanet Science Congress 2020. Copernicus Publications.Retrieved27 September2020.
  6. ^Ryabova, Galina O.; Asher, David J.; Campbell-Brown, Margaret D. (10 October 2019).Meteoroids: Sources of Meteors on Earth and Beyond.Cambridge University Press.ISBN978-1-108-42671-8.
  7. ^abStudies on Solar System Explorations using DESTINY: the Demonstration and Experiment of Space Technology for Interplanetary VoyageTakahiro Iwata, Yasuhiro Kawakatsu, Go Murakami, Yuichiro Ezoe, Shingo Kameda, Kunihiro Keika, Tomoko Arai, Shuji Matsuura, Takanao Saiki, Takeshi Imamura, Kazunori Ogohara, Akira Oyama, Toshinori Ikenaga; ISTS Special Issue: Selected papers from the 30th International Symposium on Space Technology and Science Vol. 14 (2016) No. ists30; DOI:http://doi.org/10.2322/tastj.14.Pk_111
  8. ^"DESTINY＋: Technology Demonstration and Exploration of Asteroid 3200 Phaethon"(PDF).Institute of Space and Astronautical Science (ISAS) / JAXA. 20 September 2017.Retrieved22 September2017.
  9. ^"DLR-JAXA Joint Statement concerning the bilateral cooperation"(Press release). JAXA. 10 September 2017.Retrieved21 September2017.

External links[edit]

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