Next Generation Small-Body Sample Return
Proposed JAXA mission to return samples from comet 289P/Blanpain.
JAXA’s proposed Next Generation Small-Body Sample Return (NGSR) mission would collect material from a small Solar System object, such as an asteroid or comet, and bring it back to Earth. The primary target is comet 289P/Blanpain, a short-period comet that orbits the Sun every 5.2 years. This concept builds on Japan’s earlier successes with Hayabusa and Hayabusa2, both of which retrieved samples from near-Earth asteroids.
The main objective is to obtain pristine material from a small body for detailed laboratory study, which could reveal clues about the early Solar System, planet formation, and the origin of organic compounds. Other possible goals include in situ analysis, surface mapping, and testing new technologies for deep-space exploration.
Japan has led the field in asteroid sample-return missions: Hayabusa returned material from 25143 Itokawa in 2010, and Hayabusa2 delivered samples from 162173 Ryugu in 2020. NGSR is expected to use advanced technologies developed from those missions, potentially allowing more complex sampling and access to different types of targets.
If the 2034 launch window for 289P is missed, five additional launch opportunities exist between 2033 and 2039. Backup targets include comets 15P/Finlay and 252P/LINEAR, along with asteroids 2003 XM, (451124) 2009 KC3, and 2016 LX48.
Quick Facts
- Mission Type
- Sample return
- Operator
- JAXA
- Mission Duration
- 12 years (planned)Sakatani_2026
- Spacecraft Bus
- DSOTVSaiki_2025
- Launch Mass
- ~2000 kg
- Dry Mass
- DSOTV: <1000 kg · Lander: <120 kg
- Landing Mass
- ~130 kg
- Payload Mass
- 265 kg
- Dimensions
- DSOTV: 1.8 xx · Lander: 0.8 xx
- Power
- DSOTV: 800 W · Lander: 220 W
- Launch Date
- January 2034 (planned)Sakatani_2026
- Launch Rocket
- H3-22SSaiki_2025
Facts from the source article.
Lore & Background
The Next Generation Small-Body Sample Return (NGSR) is a proposed space mission concept by the Japan Aerospace Exploration Agency (JAXA). Its main target is the short-period comet 289P/Blanpain, which has an orbital period of 5.2 years. The mission is designed to build upon Japan's previous sample-return missions, Hayabusa and Hayabusa2, which returned material from near-Earth asteroids 25143 Itokawa and 162173 Ryugu, respectively.
The primary goal of NGSR is to collect and return pristine material from a small celestial body to Earth for detailed scientific analysis. Such samples could provide insights into the early Solar System, the formation of planets, and the origins of organic compounds. Additional objectives may include in situ analysis, surface mapping, and testing new technologies for deep-space exploration.
Five additional launch windows were identified for the mission towards 289P between 2033 and 2039. Backup targets in case the 2034 launch window were missed include comets 15P/Finlay and 252P/LINEAR, as well as asteroids 2003 XM, (451124) 2009 KC3, and 2016 LX48.
Reader's Guide
The Next Generation Small-Body Sample Return (NGSR) concept represents a continuation of Japan's leadership in asteroid and comet sample-return missions. Building on the technical and scientific successes of Hayabusa and Hayabusa2, NGSR aims to extend sample-return capabilities to a comet, specifically 289P/Blanpain. The mission's primary objective—returning pristine material from a small body—could yield insights into the early Solar System, planet formation, and the origins of organic compounds. The inclusion of backup targets and multiple launch windows between 2033 and 2039 demonstrates careful mission planning. If realized, NGSR would further cement JAXA's role in deep-space exploration and sample-return science, potentially providing the first comet samples returned to Earth since the Stardust mission. The mission's proposed in situ analysis and technology testing could also advance future exploration.
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