1I/2017 U1 (Oumuamua) is Hot: Imaging, Spectroscopy and Search of Meteor Activity

@article{Ye20171I2017U,
title={1I/2017 U1 (Oumuamua) is Hot: Imaging, Spectroscopy and Search of Meteor Activity},
author={Quanzhi Ye and Qicheng Zhang and Michael S. P. Kelley and Peter Brown},
journal={arXiv: Earth and Planetary Astrophysics},
year={2017}
}
• Q. Ye, +1 author P. Brown
• Published 7 November 2017
• Physics
• arXiv: Earth and Planetary Astrophysics
1I/2017 U1 (Oumuamua), a recently discovered asteroid in a hyperbolic orbit, is likely the first macroscopic object of extrasolar origin identified in the solar system. Here, we present imaging and spectroscopic observations of \textquoteleft Oumuamua using the Palomar Hale Telescope as well as a search of meteor activity potentially linked to this object using the Canadian Meteor Orbit Radar. We find that \textquoteleft Oumuamua exhibits a moderate spectral gradient of $10\%\pm6\%~(100… Figures and Tables from this paper New Insights into Interstellar Object 1I/2017 U1 (‘Oumuamua) from SOHO/STEREO Nondetections • Physics • 2019 Object 1I/2017 U1 (Oumuamua) is the first interstellar small body ever discovered in the solar system. By the time of discovery, it had already passed perihelion. To investigate the behavior of On the Anomalous Acceleration of 1I/2017 U1 ‘Oumuamua • Physics The Astrophysical Journal • 2019 We show that the P ~ 8 hr photometric period and the astrometrically measured A_(ng) ~ 2.5 × 10^(−4) cm s^(−2) non-gravitational acceleration (at r ~ 1.4 au) of the interstellar object 1I/2017 Anomalous Sun Flyby of 1I/2017 U1 (Oumuamua) • Physics • 2020 The findings of Micheli et al. (Nature2018, 559, 223–226) that 1I/2017 U1 (Oumuamua) showed anomalous orbital accelerations have motivated us to apply an impact model of gravity in search for an 1I/2017 ’Oumuamua-like Interstellar Asteroids as Possible Messengers from Dead Stars Discovery of the first interstellar asteroid (ISA) - 1I/2017 'Oumuamua - raised a number of questions regarding its origin. Many of them relate to its lack of cometary activity, suggesting refractory The origin of interstellar asteroidal objects like 1I/2017 U1 • Physics • 2017 With the recently discovered interstellar object 1I/2017U1 (1I/'Oumuamua) we have to realize that the Solar System is not isolated, but part of a larger environment with which we interact. We compare Spectroscopy and thermal modelling of the first interstellar object 1I/2017 U1 ‘Oumuamua During the formation and evolution of the Solar System, significant numbers of cometary and asteroidal bodies were ejected into interstellar space1,2. It is reasonable to expect that the same Implications for planetary system formation from interstellar object 1I/2017 U1 (Oumuamua) The recently discovered minor body 1I/2017 U1 (Oumuamua) is the first known object in our Solar System that is not bound by the Sun's gravity. Its hyperbolic orbit (eccentricity greater than unity) Interstellar Interloper 1I/2017 U1: Observations from the NOT and WIYN Telescopes We present observations of the interstellar interloper 1I/2017 U1 ('Oumuamua) taken during its 2017 October flyby of Earth. The optical colors B-V = 0.70$\pm$0.06, V-R = 0.45$\pm\$0.05, overlap those
Non-gravitational acceleration in the trajectory of 1I/2017 U1 (‘Oumuamua)
‘Oumuamua—the first known interstellar object to have entered the Solar System—is probably a comet, albeit with unusual dust and chemical properties owing to its origin in a distant solar system.
Col-OSSOS: Colors of the Interstellar Planetesimal 1I/‘Oumuamua
The recent discovery by Pan-STARRS1 of 1I/2017 U1 (`Oumuamua), on an unbound and hyperbolic orbit, offers a rare opportunity to explore the planetary formation processes of other stars, and the

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