2026-09-20T10:44:44Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1513122023-08-01T04:11:17Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Binzel, Richard P.
Takir, Driss
Larsen, Skylar S.
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
2023-07-31T19:30:32Z
2023-07-31T19:30:32Z
2023-06
2023-05-26T18:07:36.051Z
https://hdl.handle.net/1721.1/151312
0009-0009-6718-6595
The near-infrared spectra of four near-Earth asteroids, 3122 Florence, (357439) 2004 BL86, 1036 Ganymed, and 4055 Magellan, were analyzed for traces of surface water. NEAs are widely thought to be the source of water and organics delivered to early Earth. Additionally, some NEAs are considered potentially hazardous objects (PHOs), and they could make threateningly close approaches to our planet. The Infrared Telescope Facility (IRTF), located at Mauna Kea, Hawaii, was used to measure long wavelength cross-dispersed (LXD) spectra of these four asteroids with SpeX mode. The measured spectra wavelength ranged from 1.67-4.2 μm, which includes the 3-μm feature attributed to water/hydroxyl. The 3μm spectral feature was found on Florence, but not on 2004 BL86; meanwhile, the Ganymed and Magellan results were inconclusive. Discovering water on a celestial body such as Florence, an S-type asteroid, is highly unusual and warrants further study.
S.B.
Massachusetts Institute of Technology
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Near-Infrared Spectroscopy of Near-Earth Asteroids: 3122 Florence, (357439) 2004 BL86, 1036 Ganymed, and 4055 Magellan
Thesis
application/pdf
Bachelor
Bachelor of Science in Earth, Atmospheric, and Planetary Sciences
Publication
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unknown
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<Abstract>The near-infrared spectra of four near-Earth asteroids, 3122 Florence, (357439) 2004 BL86, 1036 Ganymed, and 4055 Magellan, were analyzed for traces of surface water. NEAs are widely thought to be the source of water and organics delivered to early Earth. Additionally, some NEAs are considered potentially hazardous objects (PHOs), and they could make threateningly close approaches to our planet. The Infrared Telescope Facility (IRTF), located at Mauna Kea, Hawaii, was used to measure long wavelength cross-dispersed (LXD) spectra of these four asteroids with SpeX mode. The measured spectra wavelength ranged from 1.67-4.2 μm, which includes the 3-μm feature attributed to water/hydroxyl. The 3μm spectral feature was found on Florence, but not on 2004 BL86; meanwhile, the Ganymed and Magellan results were inconclusive. Discovering water on a celestial body such as Florence, an S-type asteroid, is highly unusual and warrants further study.</Abstract>
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