2023 DZ2 Planetary Defense Campaign

被引：3

作者：

Reddy, Vishnu ^{[1
]}

Kelley, Michael S. ^{[2
]}

Benner, Lance ^{[3
]}

Dotson, Jessie ^{[4
]}

Erasmus, Nicolas ^{[5
]}

Farnocchia, Davide ^{[3
]}

Linder, Tyler ^{[6
]}

Masiero, Joseph R. ^{[7
]}

Thomas, Cristina ^{[8
]}

Bauer, James ^{[9
]}

Alarcon, Miguel R. ^{[10
,11
]}

Bacci, Paolo ^{[12
,13
,14
]}

Bamberger, Daniel ^{[15
]}

Battle, Adam ^{[1
]}

Benkhaldoun, Zouhair ^{[16
]}

Betti, Guido ^{[17
,18
]}

Birlan, Mirel ^{[19
,20
]}

Brozovic, Marina ^{[3
]}

Burt, Brian ^{[21
]}

Cantillo, David C. ^{[1
]}

Chandra, Sunil ^{[5
]}

Chomette, Gregoire ^{[22
]}

Coates, Ashley ^{[4
]}

DeMeo, Francesca ^{[23
]}

Devogele, Maxime ^{[24
]}

Fatka, Petr ^{[25
]}

Ferrais, Marin ^{[23
]}

Fini, Paolo ^{[16
]}

van Gend, Carel ^{[5
]}

Giorgini, Jon D. ^{[3
]}

Glamazda, Dmitry ^{[26
]}

Holmes, Robert ^{[6
]}

Hora, Joseph L. ^{[27
]}

Horiuchi, Shinji ^{[28
]}

Hornoch, Kamil ^{[24
]}

Iozzi, Marco ^{[13
,29
,30
,31
]}

Jacques, Cristovao ^{[32
,33
]}

Jehin, Emmanuel ^{[34
]}

Jiang, Hai ^{[35
]}

Kaiser, Galina ^{[25
]}

Kusnirak, Peter ^{[24
]}

Kuznetsov, Eduard ^{[25
]}

de Leon, Julia ^{[9
,10
]}

Liakos, Alexios ^{[36
]}

Licandro, Javier ^{[9
,10
]}

Lister, Tim ^{[37
]}

Liu, Jing ^{[34
]}

Lopez-Oquendo, Andy ^{[8
]}

Maestripieri, Martina ^{[11
,12
,13
]}

Mathias, Donovan ^{[4
]}

机构：

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

[2] NASA Headquarters, Planetary Sci Div, Planetary Def Coordinat Off, Washington, DC 20546 USA

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[4] NASA Ames Res Ctr, Moffett Field, CA 94035 USA

[5] South African Astron Observ, ZA-7925 Cape Town, South Africa

[6] Astron Res Inst, 7168 NCR 2750E, Ashmore, IL 61912 USA

[7] Caltech, IPAC, 1200 East Calif Blvd,MC 100-22, Pasadena, CA 91125 USA

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

[9] Univ Maryland, College Pk, MD 20742 USA

[10] Inst Astrofis Canarias, C-Via Lactea s-n, E-38205 San Cristobal la Laguna, Canarias, Spain

[11] Univ La Laguna, Dept Astrofis, ,Laguna, E-38205 San Cristobal la Laguna, Canarias, Spain

[12] Osservatorio Astron Montagna Pistoiese, Casella Postale 46, San Marcello Piteglic, PT, Italy

[13] GAMP Grp Astrofili Montagna Pistoiese, San Marcello Piteglio, Italy

[14] UAI Unione Astrofili Italiani, Padua, Italy

[15] Northolt Branch Observ, Dabbs Hill Lane, London, England

[16] Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Marrakech, Morocco

[17] Blessed Hermann Observ, Florence, Italy

[18] SAF Soc Astronom Fiorentina, I-50019 Sesto Fiorentino, FI, Italy

[19] Romanian Acad, Astron Inst, 5 Cutitul Argint, Bucharest 040557, Romania

[20] IMCCE Observ Paris, Paris, France

[21] Lowell Observ, 1400 West Mars Hill Rd, Flagstaff, AZ 86001 USA

[22] STC NASA Ames Res Ctr, Moffett Field, CA 94035 USA

[23] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[24] Univ Cent Florida, Arecibo Observ, HC-3 Box 53995, Arecibo, PR 00612 USA

[25] Astron Inst AS CR, Fricova 298, CZ-25165 Ondrejov, Czech Republic

[26] Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia

[27] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St,MS-65, Cambridge, MA 02138 USA

[28] CSIRO, Canberra Deep Space Commun Complex, Tidbinbilla, Australia

[29] HOB Astron Observ, Capraia, FI, Italy

[30] GRAM Grp Astrofili Montelupo, Montelupo Fiorentino, FI, Italy

[31] Osservatorio Astron Beppe Forti, Montelupo Fiorentino, FI, Italy

[32] SONEAR Observ, Morro Diamante, Oliveira, MG, Brazil

[33] CEAMIG Ctr Estudos Astron Minas Gerais, Rua Aimores,2735 Belo Horizonte, Barro Preto, MG, Brazil

[34] Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee 6 Aout 19, B-4000 Liege, Belgium

[35] Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing, Peoples R China

[36] Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sens, Metaxa & Vas Pavlou St, GR-15773 Penteli, Athens, Greece

[37] Las Cumbres Observ LCOGT, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA

[38] ESA NEO Coordinat Ctr, Largo Galileo Galilei 1, I-00044 Frascati, RM, Italy

[39] GAL Hassin Ctr Int Sci Astronom, Via Fontana Mitri 3, I-90010 Isnello, Palermo, Italy

[40] INAF Osservatorio Astron Palermo, Piazza Parlamento 1, I-90134 Palermo, Italy

[41] Planetary Sci Inst, Tucson, AZ USA

[42] Univ Alicante, Dept Fis Ingn Sistemas & Teoria Senal, Carr San Vicente Raspeig s-n, San Vicente Del Raspeig 03690, Alicante, Spain

[43] Univ Barcelona IEEC UB, Inst Ciencies Cosmos ICCUB, Carrer Marti & Franques 1, Barcelona 08028, Spain

[44] NOAK Observ, Delfon 2 Stavraki, Ioannina 45500, Greece

[45] NAC Observ, Benson, AZ USA

来源：

PLANETARY SCIENCE JOURNAL | 2024年 / 5卷 / 06期

基金：

欧盟地平线“2020”; 美国国家航空航天局; 新加坡国家研究基金会;

关键词：

NEAR-EARTH OBJECTS; ASTEROIDS; MODEL; SPEX;

D O I：

10.3847/PSJ/ad4a6d

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a fourth planetary defense exercise, focused this time on the small near-Earth asteroid (NEA) 2023 DZ2 and conducted during its close approach to the Earth in 2023 March. The International Asteroid Warning Network (IAWN), with support from NASA's Planetary Defense Coordination Office (PDCO), has been coordinating planetary defense observational campaigns since 2017 to test the operational readiness of the global planetary defense capabilities. The last campaign focused on the NEA Apophis, and an outcome of that exercise was the need for a short burst campaign to replicate a real-life near-Earth object impact hazard scenario. The goal of the 2023 DZ2 campaign was to characterize the small NEA as a potential impactor and exercise the planetary defense system including observations, hypothetical risk assessment and risk prediction, and hazard communication with a short notice of just 24 hr. The entire campaign lasted about 10 days. The campaign team was divided into several working groups based on the characterization method: photometry, spectroscopy, thermal IR photometry and optical polarimetry, radar, and risk assessment. Science results from the campaign show that 2023 DZ2 has a rotation period of 6.2745 +/- 0.0030 minutes; visible wavelength color photometry/spectroscopy/polarimetry and near-IR spectroscopy all point to an E-type taxonomic classification with surface composition analogous to aubrite meteorites; and radar observations show that the object has a diameter of 30 +/- 10 m, consistent with the high albedo (0.49) derived from polarimetric and thermal IR observations.

引用

页数：16

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