A5055674745- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- Laser-induced spectroscopy and plasma
- Planetary Science and Exploration
City University of Seattle
2024
University of Washington
2024
Citizen (Japan)
2023
Abstract A complete accounting of nearby objects—from the highest-mass white dwarf progenitors down to low-mass brown dwarfs—is now possible, thanks an almost set trigonometric parallax determinations from Gaia, ground-based surveys, and Spitzer follow-up. We create a census objects within Sun-centered sphere 20 pc radius check published literature decompose each binary or higher-order system into its separate components. The result is volume-limited ∼3600 individual star formation products...
We present the Citizen Science program Active Asteroids and describe discoveries stemming from our ongoing project. Our NASA Partner is hosted on Zooniverse online platform launched 2021 August 31, with goal of engaging community in search for active asteroids -- comet-like tails or comae. also set out to identify other unusual solar system objects, such as Centaurs, quasi-Hilda asteroids, Jupiter-family comets (JFCs). objects are rare large part because they difficult identify, so we ask...
Abstract We report statistically significant detections of nonradial, nongravitational accelerations based on astrometric data in the photometrically inactive objects 1998 KY 26 , 2005 VL 1 2016 NJ 33 2010 65 RH 120 and RF 12 . The magnitudes are greater than those typically induced by Yarkovsky effect, there is no radiation-based, nonradial effect that can be so large. Therefore, we hypothesize driven outgassing calculate implied H 2 O production rates for each object. attempt to reconcile...
Saturn has long been the only giant planet in our solar system without any known Trojan members. In this paper, with serendipitous archival observations and refined orbit determination, we report that 2019 UO$_{14}$ is a of gas giant. However, object transient currently librating around leading Lagrange point $L_4$ Sun-Saturn period $\sim\!0.7$ kyr. Our N-body numerical simulation shows was likely captured as Centaur became trapped $\sim\!2$ kyr ago from horseshoe coorbital. The current...
Abstract Saturn has long been the only giant planet in our solar system without any known Trojan members. In this Letter, with serendipitous archival observations and refined orbit determination, we report that 2019 UO 14 is a of gas giant. However, object transient currently librating around leading Lagrange point L 4 Sun–Saturn period ∼0.7 kyr. Our N -body numerical simulation shows was likely captured as Centaur became trapped ∼ 2 kyr ago from horseshoe co-orbital. The current state will...
Abstract Active asteroids are a mysterious population of objects on asteroid-like orbits that display comet-like activity produced by diverse variety mechanisms, providing glimpses the ongoing evolution asteroid belt and near-Earth objects. We report identification new active 2008 BJ 22 , from images obtained Subaru Telescope in 2008. The object was not detected earlier Canada–France–Hawaii 2005 down to 3 σ limiting magnitude m r ∼ 24, corresponding V -band absolute H > 18.4, more than...
A complete accounting of nearby objects -- from the highest-mass white dwarf progenitors down to low-mass brown dwarfs is now possible, thanks an almost set trigonometric parallax determinations Gaia, ground-based surveys, and Spitzer follow-up. We create a census within Sun-centered sphere 20-pc radius check published literature decompose each binary or higher-order system into its separate components. The result volume-limited $\sim$3,600 individual star formation products useful in...
Abstract We have detected cometary activity on minor planet 2019 OE 31 through both the Active Asteroids Citizen Science program and an independent archival search. Before 2013, was a Centaur orbit, between orbits of Jupiter Neptune. Centaurs are objects in transition from outer solar system to inner system. They play vital role understanding Kuiper Belt comets. In 2013 October, following close encounter with Jupiter, moved orbit entirely interior that Jupiter. This reduced orbital distance...
We report statistically significant detections of non-radial nongravitational accelerations based on astrometric data in the photometrically inactive objects 1998 KY$_{26}$, 2005 VL$_1$, 2016 NJ$_{33}$, 2010 VL$_{65}$, RH$_{120}$, and RF$_{12}$. The magnitudes are greater than those typically induced by Yarkovsky effect there is no radiation-based, that can be so large. Therefore, we hypothesize driven outgassing, calculate implied H$_2$O production rates for each object. attempt to...