{"id":42279,"date":"2026-08-05T10:39:55","date_gmt":"2026-08-05T08:39:55","guid":{"rendered":"https:\/\/karmaka.de\/?p=42279"},"modified":"2026-08-05T11:21:42","modified_gmt":"2026-08-05T09:21:42","slug":"low-temperature-reflectance-spectra-of-meteorites-implications-for-space-missions","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=42279","title":{"rendered":"Low-temperature reflectance spectra of meteorites: Implications for space missions"},"content":{"rendered":"\n<p>E. Caminiti, P. Beck, A. Wargnier, L. Bonal, B. Schmitt, T. Usui<\/p>\n\n\n\n<p>Icarus, In Press, Journal Pre-proof, Available online 4 August 2026<\/p>\n\n\n\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0019103526003520\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p>&#8220;Highlights<\/p>\n\n\n\n<ul>\n<li>Cryogenic temperatures induce spectral modifications in meteorite absorption bands near 0.7, 1, 2, and 3\u202f\u03bcm.<\/li>\n\n\n\n<li>Low-temperature spectral variations can affect the interpretation of meteorite and planetary body composition, as well as their degree of hydration.<br>Variations in spectral properties with surface temperature may provide a way to distinguish CO meteorites from CV-like compositions.<\/li>\n\n\n\n<li>The temperature dependence of spectral properties must be taken into account in the analysis of remote sensing, in situ, and laboratory data.&#8221;<\/li>\n<\/ul>\n\n\n\n<p class=\"justify-text\">&#8220;The spectroscopic properties of airless bodies are influenced by the space environment, including extreme temperatures. In this work, we study how low temperatures affect the spectral properties of meteorites in the visible to near-infrared wavelength range. We selected a Howardite-Eucrite-Diogenite meteorite, an ordinary chondrite, as well as seven carbonaceous chondrites of four different groups. Low-temperature reflectance spectroscopy measurements were acquired from 280\u202fK down to 70\u202fK over the 0.5\u20134\u202f\u03bcm spectral range. We used spectral parameters to investigate changes during the cooling phase, including the position, depth, and full width at half maximum of the main absorption bands, as well as the position of interband peaks and spectral slope. We observed significant modifications in the position, amplitude, and width of absorption bands around 0.7, 1, 2, and 3\u202f\u03bcm, as well as modifications of the position of interband peaks and average slope. The magnitude and trend of spectral modifications vary depending on the meteorite type. Spectral changes can influence the interpretation of the composition and the degree of hydration of meteorites and planetary objects. Moreover, even if CV and CO chondrites show comparable spectral properties, they exhibit different changes under temperature variations which may be used to distinguish their parent bodies. The effects of cryogenic temperatures on spectral properties must be considered when interpreting remote sensing data and comparing laboratory measurements with remote sensing observations. In the golden age of small body exploration, numerous space missions are affected, including but not limited to the Martian Moons eXploration (MMX, JAXA), Hera (ESA), Lucy (NASA), Tianwen-2 (CNSA), and Emirates Mission to the Asteroid Belt (EMA, UAE).&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>E. Caminiti, P. Beck, A. Wargnier, L. Bonal, B. Schmitt, T. Usui Icarus, In Press, Journal Pre-proof, Available online 4 August 2026 LINK &#8220;Highlights &#8220;The spectroscopic properties of airless bodies are influenced by the space&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77,9,19,14,8,130,181],"tags":[3631,1854,1771,3273,3034,1479,1480,5125,270,4253,1674],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42279"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=42279"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42279\/revisions"}],"predecessor-version":[{"id":42280,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42279\/revisions\/42280"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}