Tag Archives: Yarkovsky effect

The Difficulties with Predicting Armageddon

In February of 2013, the science community’s eyes were glued to the sky. They were watching for asteroid Duende, a 30m lump of rock that was due to skim past our planet in a record close approach for an object of its size. And while everyone stared skywards in one direction, another rock shot in […]

OSIRIS-REx – What’s in a Name?

The Art Project Today we officially unveiled the mural celebrating the University of Arizona-led OSIRIS-REx mission. To create this public art, we teamed up with the students of Professor Alfred Quiroz’s fall semester mural painting class at the UA School of Art. Between August and December 2014, the students worked together to produce this great […]

The YORP Effect and Bennu

As I have discussed in an earlier post, one of the OSIRIS-REx mission’s top objectives is to understand the Yarkovsky effect. The Yarkovsky effect describes a small force that affects the orbit of asteroids. In the 19th century, Ivan Yarkovsky realized that the infrared radiation escaping from a body warmed by the Sun carries off […]

All That is Known About Bennu

Today, we released the OSIRIS-REx Design Reference Asteroid (DRA) document to the public. The DRA is a compilation of all that is known about the OSIRIS-REx mission target, asteroid (101955) Bennu. We are making this document available as a service to future mission planners in the hope that it will inform their efforts. The DRA […]

OSIRIS-REx at the 2014 Asteroids, Comets, and Meteors Conference

  I just recently returned from a trip to Helsinki, Finland to attend the 12th Asteroids, Comets, and Meteors Conference. The ACM conference focuses on the research of small Solar System bodies and their role in understanding the formation and evolution of the Solar System. Topics range from the evolution of extrasolar planetary systems to […]

The OSIRIS-REx Thermal Emission Spectrometer (OTES) – Our Heat Sensor and Mineral Mapper

Guest Blogger: Vicky Hamilton, OTES Deputy Instrument Scientist To help characterize the asteroid Bennu and aid in the selection of a scientifically compelling sampling site, OSIRIS-REx carries a pair of complementary spectrometers, one of which is called the OSIRIS-REx Thermal Emission Spectrometer, or OTES. OTES is being developed and built at the School of Earth […]

Highlights from OSIRIS-REx Science Team Meeting #6

The OSIRIS-REx Science Team gathered at the University of Arizona in Tucson from April 22 -24, 2014 for their sixth meeting. The meeting was a dynamic event and covered many aspects of both the science and implementation of the mission. In this post I will discuss a few of the highlights. In Search of the […]

OSIRIS-REx – The French Connection

OSIRIS-REx is an international effort, with team members from the U.S., Canada, France, the U.K., Italy, Spain, and the Czech Republic. This diversity brings great strength to our team. I am pleased to report that last month NASA signed an international agreement with the Centre National d’Etudes Spatiales, or CNES, the French space agency. This […]

DEWG – Where’s my Asteroid?

The OSIRIS-REx mission is driven by five major science objectives. One of these objectives is to “Understand the interaction between asteroid thermal properties and orbital dynamics by measuring the Yarkovsky effect on a potentially hazardous asteroid [Bennu] and constrain the asteroid properties that contribute to this effect.” Read on to find out what this means […]