2018
DOI: 10.3847/1538-3881/aaeb8a
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Rotationally Resolved Spectroscopic Characterization of Near-Earth Object (3200) Phaethon

Abstract: 3200) Phaethon is a compelling object as it has an asteroidal appearance and spectrum, produces a weak dust tail during perihelion at just 0.14 AU, and is the parent body of the Geminid Meteor Shower. A better understanding of the physical properties of Phaethon is needed to understand the nature of its current and previous activity, relationship to potential source populations, and to plan for the upcoming flyby of the DESTINY+ spacecraft of Phaethon in the 2020s. We performed rotationally-resolved spectrosco… Show more

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Cited by 29 publications
(38 citation statements)
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“…The geometry of these observations largely matches that of Kareta et al 9 , whose NIR observations (0.7-2.5 µm) were taken earlier in the same night. Kareta et al 9 Fig. 2 Thermally corrected normalized LXD spectra of asteroid Phaethon.…”
Section: Discussionsupporting
confidence: 80%
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“…The geometry of these observations largely matches that of Kareta et al 9 , whose NIR observations (0.7-2.5 µm) were taken earlier in the same night. Kareta et al 9 Fig. 2 Thermally corrected normalized LXD spectra of asteroid Phaethon.…”
Section: Discussionsupporting
confidence: 80%
“…The prism spectrum of (2) Pallas is from the MIT-UH-IRTF Joint Campaign for NEO Reconnaissance database and the LXD spectrum of (2) Pallas is from Rivkin and DeMeo 13 . The prism spectrum of (3200) Phaethon is from Kareta et al 9 Error bars were calculated using Spextool software and based on the Robust Weighted Mean algorithm with a clipping threshold of 8 (sigma). The value at each pixel is the weighted average of the good pixels and the uncertainty is given by the propagated variance.…”
Section: Discussionmentioning
confidence: 99%
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“…Several studies (de Leon et al 2010;Todorovic 2017Todorovic , 2018 show that Phaethon is likely originating from the family of asteroids associated with (2) Pallas, one of the largest members of the Main Belt. Pallas is clearly hydrated (Usui et al 2019 and references therein) while Phaethon is not (Kareta et al 2018). Pallas has a composition that makes CM chondrites the best meteorite analogue, as indicated by Pallas' near infrared spectrum and by the strong hydration band at 2.7 μm.…”
Section: Discussion a N D I M P L I C At I O N Smentioning
confidence: 92%
“…Recently, many ground-based observations were made over a wide wavelength range, which reported that the variation in visible spectral slope depends on rotational phase. The range of spectral slope variation in one rotation is −0.5 to 0.05 µm −1 and that of the relative R-band magnitude is ±0.15 31 , 39 . Moreover, a correlation between brighter and bluer spectra was also observed 31 .…”
Section: Resultsmentioning
confidence: 92%