Sarah Greenstreet
Assistant Astronomer
National Optical-Infrared Astronomy Research Laboratory (NOIRLab)
sarah.greenstreet@noirlab.edu
Affiliate Assistant Professor
DiRAC Institute, Astronomy Department, University of Washington
sarahjg@uw.edu
About Me
I am a tenure-track Assistant Astronomer at the National Optical-Infrared Astronomy Research Laboratory (NOIRLab) and an affiliate Assistant Professor in the Data-Intensive Research in Astrophysics & Cosmology (DiRAC) Institute within the Astronomy Department at the University of Washington, where I broadly study small body orbital dynamics and impacts.
Appointments:
Tenure-track Assistant Astronomer, National Optical-Infrared Astronomy Research Laboratory (NOIRLab), Sept 2023 - present
Affiliate Assistant Professor, Astronomy Department and DiRAC Institute, University of Washington,
Sept 2023 - present
Research Scientist, DiRAC Institute, University of Washington, July 2020 - Sept 2023
Senior Researcher, B612 Asteroid Institute, Jan 2018 - Dec 2021
Postdoctoral Scholar, DiRAC Institute, University of Washington, Astronomy Department, Jan 2018 - July 2020
Postdoctoral Researcher, Las Cumbres Observatory / University of California, Santa Barbara, 2015 - 2017
Education:
Ph.D., Astronomy, Univ. of British Columbia, 2011-2015
Concentrations: Planetary Science, Orbital Dynamics
Thesis: Small body orbital dynamics in the Solar System: Celestial mechanics and impacts
M.S., Astronomy, Univ. of British Columbia, 2009-2011
Concentrations: Planetary Science, Orbital Dynamics
Thesis: The orbital distribution of near-Earth objects inside Earth's orbit
B.S., Physics, Western Washington Univ., 2003-2007
Minors: Astronomy and Mathematics
Honors Research Project: Exploring the parameters of the linear cosmic microwave background (CMB) anisotropy spectrum with the on-line tool CMBFAST
Major Projects:
NSF NOIRLab (National Optical-Infrared Astronomy Research Laboratory)
Rubin Observatory’s LSST (Legacy Survey of Space and Time)
LSST SSSC (Solar System Science Collaboration)
DiRAC Institute at University of Washington
New Horizons (NASA's Pluto-Kuiper belt mission)
OSSOS (Outer Solar System Origins Survey on CFHT)
LCOGT (Las Cumbres Observatory)
B612 Asteroid Institute
NEOSSat (Near-Earth Object Surveillance Satellite, CSA mission)
SCiMMA (Scalable Cyberinfrastructure to support Mulit-Messenger Astrophysics)
Research Interests:
My research interests include near-Earth asteroid orbital dynamics, main-belt asteroid resonances, co-orbital Solar System objects, impact and crater formation rates, resonant mechanisms that create asteroids on retrograde orbits, near-Earth object population modelling, near-Earth object candidate follow-up, characterization of objects of interest to NASA and upcoming targets of radar observations, measuring the Yarkovsky effect for near-Earth asteroids, and the asteroid impact hazard threat and possible mitigation techniques.
I received my Ph.D. from the University of British Columbia in Vancouver, Canada where I worked with Dr. Brett Gladman on dynamical studies of near-Earth objects and the Kuiper belt.
(30535) Sarahgreenstreet:
In 2021, asteroid (30535) 2001 OR5 was named “Sarahgreenstreet” by the International Astronomical Union’s Working Group on Small Bodies Nomenclature (formal announcement can be found here). 30535 is a member of the “Hungaria” group of asteroids that sits just inside the inner edge of the main asteroid belt, between the main belt and Mars. The “Hungarias”, as they’re often called, are the innermost dense concentration of asteroids in the Solar System (a fragmented collisional asteroid family). For more information about 30535 Sarahgreenstreet and the asteroid-naming process, see this blog post or visit the JPL Horizons Small-Body Database Lookup page for 30535 or the Minor Planet Center page for 30535.
Image credit: NASA JPL HORIZONS
Publications
Thesis:
Papers:
Book Chapters:
Magazine Articles:
Manuscripts in Preparation:
Greenstreet, S., Gladman, B., Petit, J.-M., Abedin, A., Kavelaars, JJ, Re-Calculation of Impact and Cratering Rates onto Pluto, Charon, and Arrokoth and Their Younger Surface Ages.
Non-Refereed Papers:
Conference Participation:
Greenstreet, S., Gladman, B., Juric, M., Volk, K., “Identifying the dynamical nature of small bodies in the Solar System that inform planet formation and evolution” talk to be presented at the Rare Gems in Big Data conference, Tucson, AZ, upcoming May 2024.
Greenstreet, S., Gladman, B., Juric, M., “Jupiter’s Metastable Companions” talk to be presented at the Division for Dynamical Astronomy Conference, Toronto, ON, upcoming May 2024.
Greenstreet, S., Eggl, S., Rawls, M., Juric, M., “The Impact of Satellite Constellations on Rubin Observatory's Legacy Survey of Space and Time (LSST)” talk to be presented at the Division for Dynamical Astronomy Conference, Toronto, ON, upcoming May 2024.
Greenstreet, S., “NEO Science Synergies Between NEO Surveyor and Rubin Observatory” talk to be presented at the Science with NEO Surveyor workshop, San Diego, CA, upcoming May 2024.
Greenstreet, S., Gladman, B., Juric, M., “Jupiter’s Metastable Companions” talk presented at the COOMOT2 workshop, 2024.
Greenstreet, S., Gladman, B., Petit, J.-M., Abedin, A., Kavelaars, JJ, “Re-Calculation of Impact and Cratering Rates onto Pluto, Charon, and Arrokoth and Their Younger Surface Ages” talk presented at the Division for Planetary Sciences Conference, 2023.
Greenstreet, S., Gladman, B., Juric, M., “Secure Identification of Metastable Jovian Co-orbitals” poster presented at the Asteroids, Comets, & Meteors Conference, Flagstaff, AZ, 2023.
Greenstreet, S., Gladman, B., Juric, M., “Jupiter Trojan Temporary Interlopers” iPoster presented at the Division for Planetary Sciences Conference, 2022.
Greenstreet, S., Lu, E., Juric, M., Moeyens, J., “The Asteroid Discovery, Analysis, and Mapping (ADAM) platform” iPoster presented at the Division for Planetary Sciences Conference (virtual), 2021.
Greenstreet, S., Gladman, B., “Centaurs and Jovian Co-orbitals with High Inclinations” poster presented at the Division for Planetary Sciences Conference (virtual), 2020.
Greenstreet, S., Lu, E., Loucks, M., Carrico, J., Kichkaylo, T., “Required deflection impulses as a function of time before impact for Earth-impacting asteroids” poster presented at the Planetary Defense Conference in College Park, MD, 2019.
Greenstreet, S., Loucks, M., Carrico, J., Lu, E., Kichkaylo, T., “Required deflection impulses as a function of time before impact for Earth-impacting asteroids” iPoster at the American Astronomical Society Meeting in Seattle, WA, 2019.
Greenstreet, S., Ngo, H., Gladman, B., “Near-Earth Asteroids on Retrograde Orbits” talk presented at the NWxSW Astronomy Meeting in Vancouver, B.C., Canada, 2018.
Greenstreet, S., Ngo, H., Gladman, B., “A main-belt source for retrograde jovian co-orbital asteroids” talk presented at the Division for Planetary Sciences Conference in Knoxville, TN, 2018.
Greenstreet, S., Seale, S., Rivera, J., Skinner, R., "Las Cumbres Observatory Partners With Local Museums In “Experience The Eclipse” Community Program" poster presented at the Division for Planetery Sciences Conference in Provo, UT, 2017.
Greenstreet, S., Farnocchia, D., Lister, T., "Measuring the Yarkovsky effect with Las Cumbres Observatory" poster presented at the Division for Planetary Sciences Conference in Provo, UT, 2017.
Greenstreet, S., Lister, T., Gomez, E., “Preparing for LSST with the LCO NEO Follow-up Network” talk presented at the Division for Planetary Sciences Conference in Pasadena, CA, 2016 and at the Hotwiring the Transient Universe V Conference in Philadelphia, PA, 2016.
Greenstreet, S., Lister, T., Gomez, E., “Preparing for LSST with the LCOGT NEO Follow-up Network”, talk presented at the Hotwiring the Transient Universe V Conference in Philadelphia, PA, 2016.
Greenstreet, S., Lister, T., Gomez, E., Christensen, E., Larson, S., “Results from the LCOGT Near-Earth Object Follow-up Network” poster presented at the DPS Conference in National Harbor, MD, 2015.
Greenstreet, S., Gladman, B., McKinnon, W. B., “Impact and Cratering History of the Pluto System” talk presented at the DPS Conference in Tucson, AZ, 2014.
Greenstreet, S., Alexandersen, M., Gladman, B., Kavelaars, J.J., Petit, J.-M., Gwyn, S., “The First Known Uranian Trojan and the Frequency of Temporary Giant-Planet Co-Orbitals” talk presented at the DPS Conference in Denver, CO, 2013.
Greenstreet, S., Gladman, B., “High-Inclination Atens ARE Rare” talk presented at the DPS Conference in Reno, NV, 2012.
Greenstreet, S., Gladman, B., Ngo, H., Granvik, M., Larson, S., “Production of Near-Earth Asteroids & High-Strength Meteoroids on Cometary (?) Retrograde Orbits” talk presented at the ACM Conference in Niigata, Japan, 2012.
Greenstreet, S., Ngo, H., Gladman, B., Granvik, M., Larson, S., “Production of Retrograde NEAs” talk presented at the DPS Conference in Nantes, France, 2011.
Greenstreet, S., Ngo, H., Gladman, B., “The toasty Solar System: Inside Earth's orbit” poster presented at the DPS Conference in Pasadena, CA, 2010.
Conference Proceedings:
36 (non-first-author) presentations at 28 conferences between October 2011 and January 2024.
Minor Planet Electronic Circulars:
533 publications between May 2011 and January 2023.
ISS and Dragon capsule flying overhead in Bellingham, WA on April 16, 2015 (Photo credit: Matt Greenstreet)