Observation of two new L4 Neptune Trojans in the Dark Energy Survey supernova fields

  title={Observation of two new L4 Neptune Trojans in the Dark Energy Survey supernova fields},
  author={David W. Gerdes and Ross J. Jennings and Gary M. Bernstein and Masao Sako and Fred C. Adams and D. A. Goldstein and Richard Kessler and T. D. Abbott and Filipe B. Abdalla and Sahar Allam and Aur{\'e}lien Benoit-L{\'e}vy and Emmanuel Bertin and David Brooks and Elizabeth Buckley-Geer and David L. Burke and Diego Capozzi and Aurelio Carnero Rosell and Matias Carrasco Kind and Jorge Carretero and Carlos E. Cunha and Chris D'Andrea and Luiz Nicolaci da Costa and Darren Lee Depoy and Shantanu Desai and J. P. Dietrich and Peter Doel and T. F. Eifler and Angelo Fausti Neto and Brenna L. Flaugher and Joshua A. Frieman and Enrique Gazta{\~n}aga and Daniel Gruen and Robert A. Gruendl and Gaston R. Guti{\'e}rrez and Klaus Honscheid and David J. James and Kyler W. Kuehn and Nikolay Kuropatkin and Ofer Lahav and T. S. Li and Marcio A. G. Maia and M March and Paul Martini and C. J. Miller and Ramon Miquel and Robert Nichol and Brian Nord and R. L. C. Ogando and Andreas Alejandro Plazas and A. K. Romer and Aaron Roodman and Eusebio S{\'a}nchez and Bas{\'i}lio Xavier Santiago and Michael S. Schubnell and Ignacio Sevilla-Noarbe and R. C. Smith and Marcelle Soares-Santos and Flavia Sobreira and Eric Suchyta and Mollye E. C. Swanson and Gregory Tarl'e and Jon J. Thaler and Alistair R. Walker and W. C. Iii Wester and Y. Zhang},
  journal={The Astronomical Journal},
We report the discovery of the eighth and ninth known Trojans in stable orbits around Neptune's leading Lagrange point, L4. The objects 2014 QO 441 and 2014 QP 441 were detected in data obtained during the 2013-14 and 2014-15 observing seasons by the Dark Energy Survey, using the Dark Energy Camera (DECam) on the 4-meter Blanco telescope at Cerro Tololo Inter-American Observatory. Both are in high-inclination orbits (18.8 ∘ and 19.4 ∘ respectively). With an eccentricity of 0.104, 2014 QO 441… 

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