 | |
| Names | Demonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby and dUst Science |
|---|---|
| Mission type | Asteroidflyby |
| Operator | ISAS /JAXA |
| Website | http://destiny.isas.jaxa.jp/ |
| Mission duration | ≥4 years (planned) cruise: ≈2 years[1] |
| Spacecraft properties | |
| Manufacturer | NEC Corporation |
| Launch mass | 480 kg (1,060 lb) including 60 kg ofxenon and 15.4 kg ofhydrazine[2] |
| Power | 4.7 kW[2] fromsolar panels |
| Start of mission | |
| Launch date | 2028 (planned)[3] |
| Rocket | H3[3] |
| Launch site | Tanegashima Space Center |
| Contractor | JAXA |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Highly elliptical orbit |
| Perigee altitude | 230 km (140 mi) |
| Apogee altitude | 40,000 km (25,000 mi) |
| Inclination | 30.0° |
| Flyby of3200 Phaethon | |
| Closest approach | 2030 (planned)[3] |
| Distance | 500 km (planned) |
| Transponders | |
| Band | X-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 fly by theGeminids meteor shower parent body3200 Phaethon, and sample dust originating from the "rock comet".[4] The spacecraft is being developed by the Japanese space agencyJAXA and will demonstrate advanced technologies for future deep space exploration. As of October 2024, DESTINY+ is planned to be launched infiscal year 2028.[3]
As of October 2024[update], DESTINY+ is planned to be launched fromTanegashima Space Center on anH3launch vehicle.[3] A launch vehicle change fromEpsilon S to H3 delayed the launch date from 2025 toJFY2028, although there's no change of fly-by with3200 Phaeton in JFY2030.[3]
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.[2][3] A lunar flyby (at ~300,000 km (190,000 mi)) would have accelerated the probe into an interplanetary orbit. During this cruise time it will fly by a fewnear Earth objects for study, including the transition body3200 Phaethon in 2030, as well as measure interplanetary andinterstellar dust.[3][5][6]
The probe's ion engines have the capability to perform another orbit transfer to study additional objects.[1]
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 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.[2] The spacecraft will come as close as 500 km (310 mi) from 3200 Phaethon.[2]
DESTINY+ will useultra 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 30krad by using a 3 mmaluminum shield.[2]
The spacecraft will be propelled by four μ10solar electric ion engines,[2] as used byHayabusa andHayabusa2, but while its predecessors operated only up to three engines simultaneously, DESTINY+ will use all four simultaneously[7] 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]
DESTINY+ will carry three scientific instruments:[5]
| Active |
|    .png) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Past |
| ||||||||||
| Planned |
| ||||||||||
| Proposed |
| ||||||||||
| Cancelled or not developed | |||||||||||
| Related | |||||||||||
| |||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
| |||||||||||||||||||||
