OSIRIS-APEX: An OSIRIS-REx Extended Mission to Asteroid Apophis

被引：22

作者：

Dellagiustina, Daniella N. ^{[1
]}

Nolan, Michael C. ^{[1
]}

Polit, Anjani T. ^{[1
]}

Moreau, Michael C. ^{[2
]}

Golish, Dathon R. ^{[1
]}

Simon, Amy A. ^{[2
]}

Adam, Coralie D. ^{[3
]}

Antreasian, Peter G. ^{[3
]}

Ballouz, Ronald-Louis ^{[4
]}

Barnouin, Olivier S. ^{[4
]}

Becker, Kris J. ^{[1
]}

Bennett, Carina A. ^{[1
]}

Binzel, Richard P. ^{[5
]}

Bos, Brent J. ^{[2
]}

Burns, Richard ^{[2
]}

Castro, Nayessda ^{[2
]}

Chesley, Steven R. ^{[6
]}

Christensen, Philip R. ^{[7
]}

Crombie, M. Katherine ^{[8
]}

Daly, Michael G. ^{[9
]}

Daly, R. Terik ^{[4
]}

Enos, Heather L. ^{[1
]}

Farnocchia, Davide ^{[6
]}

Freund Kasper, Sandra ^{[10
]}

Garcia, Rose ^{[1
]}

Getzandanner, Kenneth M. ^{[2
]}

Guzewich, Scott D. ^{[2
]}

Haberle, Christopher W. ^{[11
]}

Haltigin, Timothy ^{[12
]}

Hamilton, Victoria E. ^{[13
]}

Harshman, Karl ^{[1
]}

Hatten, Noble ^{[4
]}

Hughes, Kyle M. ^{[2
]}

Jawin, Erica R. ^{[14
]}

Kaplan, Hannah H. ^{[2
]}

Lauretta, Dante S. ^{[1
]}

Leonard, Jason M. ^{[3
]}

Levine, Andrew H. ^{[3
]}

Liounis, Andrew J. ^{[2
]}

May, Christian W. ^{[10
]}

Mayorga, Laura C. ^{[4
]}

Nguyen, Lillian ^{[4
]}

Quick, Lynnae C. ^{[2
]}

Reuter, Dennis C. ^{[2
]}

Rizk, Bashar ^{[1
]}

Roper, Heather L. ^{[1
]}

Ryan, Andrew J. ^{[1
]}

Sutter, Brian ^{[10
]}

Westermann, Mathilde M. ^{[1
]}

Wibben, Daniel R. ^{[3
]}

机构：

[1] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] KinetX Inc, Simi Valley, CA 93065 USA

[4] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[5] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA

[6] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[7] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[8] Indigo Informat Serv, Tucson, AZ 85745 USA

[9] York Univ, Ctr Res Earth & Space Sci, Toronto, ON M3J 1P3, Canada

[10] Lockheed Martin Space, Littleton, CO 80127 USA

[11] No Arizona Univ, Dept Astron & Planetary Sci, Flagstaff, AZ 86011 USA

[12] Canadian Space Agcy, St Hubert, PQ J3Y 8Y9, Canada

[13] Southwest Res Inst, Boulder, CO 80302 USA

[14] Smithsonian Natl Air & Space Museum, Washington, DC 20560 USA

来源：

PLANETARY SCIENCE JOURNAL | 2023年 / 4卷 / 10期

基金：

美国国家航空航天局;

关键词：

DIGITAL TERRAIN MODELS; IN-FLIGHT CALIBRATION; 101955; BENNU; SPIN-STATE; TIDAL DISRUPTION; 433; EROS; EARTH; SURFACE; ENCOUNTERS; SPACECRAFT;

D O I：

10.3847/PSJ/acf75e

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft mission characterized and collected a sample from asteroid (101955) Bennu. After the OSIRIS-REx Sample Return Capsule released to Earth's surface in 2023 September, the spacecraft diverted into a new orbit that encounters asteroid (99942) Apophis in 2029, enabling a second mission with the same unique capabilities: OSIRIS-Apophis Explorer (APEX). On 2029 April 13, the 340 m diameter Apophis will draw within similar to 32,000 km of Earth's surface, less than 1/10 the lunar distance. Apophis will be the largest object to approach Earth this closely in recorded history. This rare planetary encounter will alter Apophis's orbit, will subject it to tidal forces that change its spin state, and may seismically disturb its surface. APEX will distantly observe Apophis during the Earth encounter and capture its evolution in real time, revealing the consequences of an asteroid undergoing tidal disturbance by a major planet. Beginning in 2029 July, the spacecraft's instrument suite will begin providing high-resolution data of this "stony" asteroid-advancing knowledge of these objects and their connection to meteorites. Near the mission's end, APEX will use its thrusters to excavate regolith, a technique demonstrated at Bennu. Observations before, during, and after excavation will provide insight into the subsurface and material properties of stony asteroids. Furthermore, Apophis's material and structure have critical implications for planetary defense.

引用

页数：22

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