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We present a comparative analysis of the spectral slope and color distributions of Jupiter Trojans, with particular attention to asteroid families. We use a sample of data from the Moving Object Catalogue of the Sloan Digital Sky Survey,…

Astrophysics · Physics 2009-11-13 F. Roig , A. O. Ribeiro , R. Gil-Hutton

We present the results of an optical lightcurve survey of 114 Jovian Trojan asteroids conducted to determine the fraction of contact binaries. Sparse-sampling was used to assess the photometric range of the asteroids and those showing the…

Astrophysics · Physics 2008-11-26 Rita K. Mann , David Jewitt , Pedro Lacerda

To date, reflectance spectra of Jupiter Trojan asteroids have revealed no distinctive absorption features. For this reason, the surface composition of these objects remains a subject of speculation. Spectra have revealed, however, that the…

Earth and Planetary Astrophysics · Physics 2016-11-15 Michael E. Brown

Trojan asteroids orbit in the Lagrange points of the system Sun-planet-asteroid. Their dynamical stability make their physical properties important proxies for the early evolution of our solar system. To study their origin, we want to…

Earth and Planetary Astrophysics · Physics 2016-01-13 S. Bagnulo , I. N. Belskaya , A. Stinson , A. Christou , G. B. Borisov

We present 0.8 to 5 $\mu$m JWST spectra of four $\sim$20 km diameter Jupiter Trojans known to have albedos elevated above the values typical in the remaining Trojan population. The spectra of these four high albedo Jupiter Trojans are all…

Earth and Planetary Astrophysics · Physics 2025-06-26 Michael E. Brown , Ian Wong , Matthew Belyakov

Extensive photometric surveys are and will continue producing massive amounts of data on small bodies. Usually, these data will be sparsely obtained at arbitrary (and unknown)rotational phases. Therefore, new methods to process such data…

Earth and Planetary Astrophysics · Physics 2022-01-19 A. Alvarez-Candal , P. G. Benavidez , A. Campo Bagatin , T. Santana-Ros

Planetary materials orbiting white dwarf stars reveal the ultimate fate of the planets of the Solar System and all known transiting exoplanets. Observed metal pollution and infrared excesses from debris disks support that planetary systems…

Earth and Planetary Astrophysics · Physics 2020-10-14 Keaton J. Bell

We have observed well-sampled phase curves for nine Trojan asteroids in B-, V-, and I-bands. These were constructed from 778 magnitudes taken with the 1.3-m telescope on Cerro Tololo as operated by a service observer for the SMARTS…

Earth and Planetary Astrophysics · Physics 2015-05-14 Martha W. Schaefer , Bradley E. Schaefer , David L. Rabinowitz , Suzanne W. Tourtellotte

We present thermal observations of 44 Jovian Trojan asteroids with diameters (D) ranging from 5 to 24 km. All objects were observed at a wavelength of 24 microns with the Spitzer Space Telescope. Measurements of the thermal emission and of…

Earth and Planetary Astrophysics · Physics 2009-06-10 Y. R. Fernandez , D. Jewitt , J. E. Ziffer

Rotationally modulated photometric variability of ultracool dwarfs encodes key information about cloud structure and temperature contrasts. Large homogeneous optical datasets are crucial for linking atmospheric heterogeneity to fundamental…

Solar and Stellar Astrophysics · Physics 2026-05-05 Haomiao Huang , Shu Wang , Xiaodian Chen , Zhijun Tu , Jifeng Liu

The discovery rate of fast radio bursts (FRBs) is increasing dramatically thanks to new radio facilities. Meanwhile, wide-field instruments such as the 47 deg$^2$ Zwicky Transient Facility (ZTF) survey the optical sky to study transient and…

We present here the discovery of a new class of super-slow rotating asteroids (P>1000 hours) in data extracted from the Asteroid Terrestrial-impact Last Alert System (ATLAS) and Zwicky Transient Facility (ZTF) all-sky surveys. Of the 39…

Earth and Planetary Astrophysics · Physics 2021-07-21 N. Erasmus , D. Kramer , A. McNeill , D. E. Trilling , P. Janse van Rensburg , G. T. van Belle , J. L. Tonry , L. Denneau , A. Heinze , H. J. Weiland

Theoretical studies predict that Trojans are likely a frequent byproduct of planet formation and evolution. We present a novel method of detecting Trojan companions to transiting extrasolar planets which involves comparing the time of…

Astrophysics · Physics 2009-11-11 Eric B. Ford , B. Scott Gaudi

The Jupiter Trojan asteroid 128383 (2004 JW52) was recently reported to have optical colors that are incongruous with its dynamical class. New and archival observations show that this is not the case. This is a reminder that we must always…

Earth and Planetary Astrophysics · Physics 2022-01-07 Tom Seccull

The Jupiter Trojans are a significant population of minor bodies in the middle Solar System that have garnered substantial interest in recent years. Several spectroscopic studies of these objects have revealed notable bimodalities with…

Earth and Planetary Astrophysics · Physics 2014-11-12 Ian Wong , Michael E. Brown , Joshua P. Emery

Aims. We investigate the influence of the Yarkovsky force on the long-term orbital evolution of Jupiter Trojan asteroids. Methods. Clones of the observed population with different sizes and different thermal properties were numerically…

Earth and Planetary Astrophysics · Physics 2019-10-16 Stephan Hellmich , Stefano Mottola , Gerhard Hahn , Ekkehard Kührt , Detlef de Niem

In 2018, Jewitt identified the "The Trojan Color Conundrum", namely that Neptune's Trojan asteroids (NTs) had no ultra-red members, unlike the the nearby Kuiper Belt. Since then, numerous ultra-red NTs have been discovered, seemingly…

Earth and Planetary Astrophysics · Physics 2023-07-21 Larissa Markwardt , Hsing Wen Lin , David Gerdes , Fred C. Adams

Co-orbital objects, also known as trojans, are frequently found in simulations of planetary system formation. In these configurations, a planet shares its orbit with other massive bodies. It is still unclear why there have not been any…

Earth and Planetary Astrophysics · Physics 2024-07-08 O. Balsalobre-Ruza , J. Lillo-Box , D. Barrado , A. Correia , J. P. Faria , P. Figueira , A. Leleu , P. Robutel , N. Santos , E. Herrero-Cisneros

When planning a survey for astronomical transients, many factors such as cadence, filter choice, sky coverage, and depth of observations need to be balanced in order to optimize the scientific gain of the survey. Here we present a software…

Instrumentation and Methods for Astrophysics · Physics 2019-10-09 Ulrich Feindt , Jakob Nordin , Mickael Rigault , Valéry Brinnel , Suhail Dhawan , Ariel Goobar , Marek Kowalski

We determined phase curves for 301,272 asteroids in the orange filter and 280,953 in the cyan filter from the latest ATLAS Solar System Catalog V2 (SSCAT-2). Among them, 3,345 and 492 asteroids in the orange and cyan filters, respectively,…