DESTINY+

{{As of|October 2024}}, DESTINY⁺ is planned to be launched from Tanegashima Space Center on an H3 launch vehicle. A launch vehicle change from Epsilon S to H3 delayed the launch date from 2025 to JFY2028, although there's no change of fly-by with 3200 Phaeton in JFY2030.

In previous plan, it was to be launched by Epsilon S into low-Earth orbit in 2025 and to spend 1.5 years raising its orbit with ion engines.{{cite web|url=http://www.lcpm12.org/wp-content/uploads/2017/08/1415-1435-Toyota.pdf|title=DESTINY+: Deep Space Exploration Technology Demonstrator and Explorer to Asteroid 3200 Phaethon|last1=Toyota|first1=Hiroyuki|last2=Nishiyama|first2=Kazutaka|last3=Kawakatsu|first3=Yasuhiro|publisher=Low-Cost Planetary Missions Conference|date=15 August 2017|access-date=2017-09-21|archive-url=https://web.archive.org/web/20170914034331/http://www.lcpm12.org/wp-content/uploads/2017/08/1415-1435-Toyota.pdf|archive-date=14 September 2017|url-status=dead}} A lunar flyby (at ~{{cvt|300000|km}}) would have accelerated the probe into an interplanetary orbit. During this cruise time it will fly by a few near Earth objects for study, including the transition body 3200 Phaethon in 2030, as well as measure interplanetary and interstellar dust.[https://www.jstage.jst.go.jp/article/tastj/14/ists30/14_Pk_111/_article/-char/ja/ Studies on Solar System Explorations using DESTINY: the Demonstration and Experiment of Space Technology for Interplanetary Voyage] Takahiro 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{{cite conference|last1=Sommer|first1=M.|last2=Krüger|first2=H.|last3=Srama|first3=R.|last4=Hirai|first4=T.|last5=Kobayashi |first5=M.|last6=Arai|first6=T.|last7=Sasaki|first7=S.|last8=Kimura|first8=H.|last9=Moragas-Klostermeyer|first9=G.|last10=Strub|first10=P.|last11=Lohse|first11=A.-K. |url=https://meetingorganizer.copernicus.org/EPSC2020/EPSC2020-342.html|title=Destiny+ Dust Analyzer – Campaign and timeline preparation for interplanetary and interstellar dust observation during the 4-year transfer phase from Earth to Phaethon|conference=Europlanet Science Congress 2020|publisher=Copernicus Publications|date=21 September 2020|access-date=27 September 2020}}

The probe's ion engines have the capability to perform another orbit transfer to study additional objects.[http://www.isas.jaxa.jp/j/researchers/symp/sss13/paper/P2-132.pdf DESTINY Mission Overview] Yasuhiro KAWAKATSU JAXA

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 of dusts, which are key sources of organic compounds to 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. The spacecraft will come as close as {{cvt|500|km}} from 3200 Phaethon.

DESTINY⁺ will use ultra light-weight solar panels and heat-actuated folding radiators, along with compact avionics. The spacecraft is designed to tolerate a radiation dose up to approximately 30 krad by using a 3 mm aluminum shield.

The spacecraft will be propelled by four μ10 solar electric ion engines, as used by Hayabusa and Hayabusa2, but while its predecessors operated only up to three engines simultaneously, DESTINY⁺ will use all four simultaneously{{cite web|url=http://fanfun.jaxa.jp/jaxatv/files/20170920_dlr_e.pdf|title=DESTINY＋: Technology Demonstration and Exploration of Asteroid 3200 Phaethon|publisher=Institute of Space and Astronautical Science (ISAS) / JAXA|date=20 September 2017|access-date=2017-09-22}} for a total thrust of 40 mN (specific impulse: 3000 seconds; acceleration: 83 μm/s²; power: 1670 watts.) The total dry mass (excludes xenon propellant) of the ion engine system is {{cvt|59|kg}}.

DESTINY⁺ will carry three scientific instruments:

• DESTINY Dust Analyzer (DDA) — The DESTINY Dust Analyzer (2.7 kg) will be provided by the German Aerospace Center (DLR),{{cite press release|date=September 10, 2017|title=DLR-JAXA Joint Statement concerning the bilateral cooperation|url=http://global.jaxa.jp/press/2017/09/20170920_dlr.html|publisher=JAXA|access-date=September 21, 2017}} and is being developed by the University of Stuttgart.{{cite web |date=12 November 2020 |title=DESTINY+ – Germany and Japan begin new asteroid mission |url=https://www.dlr.de/content/en/articles/news/2020/04/20201112_destiny-germany-and-japan-begin-new-asteroid-mission.html |access-date=15 November 2020 |publisher=German Aerospace Center (DLR)}}
• Telescopic Camera for Phaethon (TCAP) — The telescopic camera has a mass of 15.8 kg.
• 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 nm wavelengths.

{{Portal|Spaceflight}}

• Lucy – NASA mission to flyby multiple Jupiter trojans
• OKEANOS – proposed JAXA Jupiter trojan flyby mission using solar sail/solar electric propulsion hybrid
• OSIRIS-REx – NASA sample-return mission to the carbonaceous asteroid 101955 Bennu
• Rosetta – ESA mission to comet 67P/Churyumov–Gerasimenko

{{Reflist|30em}}

• [http://destiny.isas.jaxa.jp/ Official project site] {{in lang|ja}}

{{Asteroid spacecraft}}

{{Japanese space program}}

{{Future spaceflights}}

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