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

@article{Gerdes2016ObservationOT,
  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},
  year={2016},
  volume={151},
  pages={39}
}
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… 
View PDF on arXiv
18 Citations
Background Citations
5

Figures and Tables from this paper

18 Citations

Citation Type

Citation Type

Trans-Neptunian Objects Found in the First Four Years of the Dark Energy Survey
We present a catalog of 316 trans-Neptunian bodies detected by the Dark Energy Survey (DES). These objects include 245 discoveries by DES (139 not previously published) detected in $\approx 60,000$…
The Pan-STARRS 1 Discoveries of five new Neptune Trojans
In this work we report the detection of seven Neptune Trojans (NTs) in the Pan-STARRS 1 (PS1) survey. Five of these are new discoveries, consisting of four L4 Trojans and one L5 Trojan. Our orbital…
Dynamical Classification of Trans-Neptunian Objects Detected by the Dark Energy Survey
The outer Solar System contains a large number of small bodies (known as trans-Neptunian objects or TNOs) that exhibit diverse types of dynamical behavior. The classification of bodies in this…
Discovery and Dynamical Analysis of an Extreme Trans-Neptunian Object with a High Orbital Inclination
We report the discovery and dynamical analysis of 2015 BP519, an extreme trans-Neptunian object (TNO) detected by the Dark Energy Survey at a heliocentric distance of 55 au, perihelion of ∼36 au, and…
Discovery and physical characterization of a large scattered disk object at 92 au
We report the observation and physical characterization of the possible dwarf planet 2014 UZ224 ("DeeDee"), a dynamically detached trans-Neptunian object discovered at 92 au. This object is currently…
The dark energy survey and operations: years 1 to 3
The Dark Energy Survey (DES) is an operating optical survey aimed at understanding the accelerating expansion of the universe using four complementary methods: weak gravitational lensing, galaxy…
Dynamical Analysis of Three Distant Trans-Neptunian Objects with Similar Orbits
This paper reports the discovery and orbital characterization of two extreme trans-Neptunian objects (ETNOs), 2016 QV 89 and 2016 QU 89 , which have orbits that appear similar to that of a previously…
A Search of the Full Six Years of the Dark Energy Survey for Outer Solar System Objects
We present a search for outer solar system objects in the 6 yr of data from the Dark Energy Survey (DES). The DES covered a contiguous 5000 deg2 of the southern sky with ≈80,000 3 deg2 exposures in…
Neptune Trojans: a Revisit and a New Membertwo
Evidence for color dichotomy in the primordial Neptunian Trojan population
...
1
2
...

References

SHOWING 1-10 OF 38 REFERENCES
Detection of a Trailing (L5) Neptune Trojan
TLDR
The detection of 2008 LC18, which is a Neptune Trojan in the trailing (L5) Lagrangian region of gravitational equilibrium within Neptune’s orbit, indicates that the Trojans were likely captured by a migrating, eccentric Neptune in a dynamically excited planetesimal population.
A Thick Cloud of Neptune Trojans and Their Colors
TLDR
The discovery of a high-inclination Neptune Trojan, 2005 TN53 demonstrates that the Neptune Trojan population occupies a thick disk, which is indicative of “freeze-in” capture instead of in situ or collisional formation.
Size Distribution of Faint Jovian L4 Trojan Asteroids
We detected 51 faint Jovian Trojan asteroids in the L4 Lagrangian swarm in survey observations near opposition and the ecliptic using a wide-field mosaicked CCD camera on the 8.2 m Subaru Telescope.…
2011 HM102: DISCOVERY OF A HIGH-INCLINATION L5 NEPTUNE TROJAN IN THE SEARCH FOR A POST-PLUTO NEW HORIZONS TARGET
We present the discovery of a long-term stable L5 (trailing) Neptune Trojan in data acquired to search for candidate trans-Neptunian objects for the New Horizons spacecraft to fly by during an…
The intrinsic Neptune Trojan orbit distribution: Implications for the primordial disk and planet migration
2004 KV18: a visitor from the scattered disc to the Neptune Trojan population
We have performed a detailed dynamical study of the recently identified Neptunian Trojan 2004 KV18, only the second object to be discovered librating around Neptune's trailing Lagrange point, L5. We…
Population and Size Distribution of Small Jovian Trojan Asteroids
We present a study of Jovian Trojan objects detected serendipitously during the course of a sky survey conducted at the University of Hawaii 2.2 m telescope. We used a 8192 × 8192 pixel…
How Long-Lived Are the Hypothetical Trojan Populations of Saturn, Uranus, and Neptune?
We investigate the possibility that fractions of the primordial populations at the triangular Lagrangian points of Saturn, Uranus, and Neptune have survived to the present and form (as yet…
Earth’s Trojan asteroid
TLDR
It is established that 2010 TK7 is a Trojan companion of Earth, librating around the leading Lagrange triangular point, L4, whose orbit is stable over at least ten thousand years.
On the Origin of the Trojan Asteroids: Effects of Jupiter's Mass Accretion and Radial Migration
Abstract We present analytic and numerical results which illustrate the effects of Jupiter's accretion of nebular gas and the planet's radial migration on its Trojan companions. Initially, we…
...
1
2
3
4
...