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Multicolor Photometry of Trans-neptunian Objects
Icarus, 2001Abstract We are continuing our photometric survey of the trans-neptunian and Centaur populations started in 1997. We report multicolor photometry for 17 objects. With these results combined with previous data (M. A. Barucci, A. Doressoundiram, M. Fulchignoni, D. Tholen, and M. Lazzarin 1999. Icarus 142 , 476–481; M. A. Barucci, J.
A Doressoundiram +2 more
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Formation and Migration of Trans-Neptunian Objects [PDF]
AIP Conference Proceedings, 2004 Trans-Neptunian objects (TNOs) with diameter d>100 km moving now in not very eccentric orbits could be formed directly by the compression of large rarefied dust condensations (with semi-major axes a>30 AU), but not by the accretion of smaller solid planetesimals.
Sergei I Ipatov, Ipatov S I
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Surveys in Geophysics, 1997
Since the periodicity of comets was first established by Halley, the question of their origin has fascinated astronomers. It is clear that they have to be stored somewhere, since their life time in the inner Solar System is short. Around 1950 the idea emerged that cometary nuclei could be stored in a belt beyond Neptune, and this belt became known as ...
I. P. Williams, S. J. Collander-Brown
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Since the periodicity of comets was first established by Halley, the question of their origin has fascinated astronomers. It is clear that they have to be stored somewhere, since their life time in the inner Solar System is short. Around 1950 the idea emerged that cometary nuclei could be stored in a belt beyond Neptune, and this belt became known as ...
I. P. Williams, S. J. Collander-Brown
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HST Photometry of trans-Neptunian Objects
Earth, Moon, and Planets, 2003From July 2001 to June 2002, an HST snapshot program obtained V, R and I photometry for 72 TNOs. The TNOs were sorted by dynamical class, and Spearman rank correlation statistics were calculated for each combination of color and orbital parameter. No strong correlations were found for the combined sample of TNOs, the resonant TNOs, or the non-resonant ...
D. C. Stephens +8 more
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Unusual Eccentricity and Inclination Distributions of Trans-Neptunian Objects and Trans-Neptunian Binaries [PDF]
International Journal of Astrophysics and Space Science, 2018 The eccentricity and inclination of trans-Neptunian objects (TNOs) decrease significantly as radius of perihelion increases. Also, the percentage of TNOs in almost circular orbits with low inclinations increases dramatically with perihelion distance.
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2016
For a very long period of time our solar system was believed to comprise nine planets: the terrestrial planets Mercury, Venus, Earth, Mars, followed by the gas giants Jupiter, Saturn, Uranus and Neptune. The exotic and tiny Pluto brought up the rear. Pluto was demoted from its planet status in 2006. Thus, only eight planets remain.
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For a very long period of time our solar system was believed to comprise nine planets: the terrestrial planets Mercury, Venus, Earth, Mars, followed by the gas giants Jupiter, Saturn, Uranus and Neptune. The exotic and tiny Pluto brought up the rear. Pluto was demoted from its planet status in 2006. Thus, only eight planets remain.
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Trans-Neptunian Object discoveries at KMTNet-CTIO
2022<p>We report a multi-opposition discovery of 17 Trans-Neptunian Objects (TNOs) with the Chilean node of the Korea Microlensing Telescope Network (KMTNet-CTIO) which has a 1.6 m wide-field optical telescope covering 2x2 square degree field of view. The first survey observations were made with 4 fields around (RA,DEC = 197.6&#176;, -
Youngmin JeongAhn +3 more
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The trans-neptunian object UB313 is larger than Pluto
Nature, 2006The most distant known object in the Solar System, 2003 UB313 (97 au from the Sun), was recently discovered near its aphelion. Its high eccentricity and inclination to the ecliptic plane, along with its perihelion near the orbit of Neptune, identify it as a member of the 'scattered disk'.
F, Bertoldi +4 more
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Contamination of the asteroid belt by primordial trans-Neptunian objects
Nature, 2009The main asteroid belt, which inhabits a relatively narrow annulus approximately 2.1-3.3 au from the Sun, contains a surprising diversity of objects ranging from primitive ice-rock mixtures to igneous rocks. The standard model used to explain this assumes that most asteroids formed in situ from a primordial disk that experienced radical chemical ...
Levison, H.F. +5 more
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Pluto: A Planet or a Trans-Neptunian Object?
Highlights of Astronomy, 2002AbstractThe purposes of classification and taxonomy are reviewed. Using examples from fields ranging from paleontology to planetology, I argue that non-exclusive classifications, which allow Pluto to be considered both a planet and a TNO, provide the most desirable approach to progress in our science.
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