Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty

Headshot of Emily Lakdawalla

Planetary Society Weekly Hangout: Studying Asteroids from Earth with Andy Rivkin

Posted by Emily Lakdawalla

28-02-2013 13:25 CST

Topics: podcasts and videos, asteroids, optical telescopes

Join Emily Lakdawalla for the Planetary Society's weekly hangout! Her guest this week was Applied Physics Laboratory asteroid astronomer and occasional musician Andy Rivkin. We talked about the menagerie of rocks in the asteroid belt, how many of them travel in pairs and triples, how some of them are surprisingly wet, and how much you can learn about asteroids using Earth-based telescopes.

Asteroid 4179 Toutatis as seen simultaneously from Paranal and La Silla


Asteroid 4179 Toutatis as seen simultaneously from Paranal and La Silla
Two images of asteroid 4179 taken on September 29, 2004, at 02:30 UTC, when the asteroid was passing through the constellation of Triangulum Australe (the Southern Triangle) have been superimposed. The images were taken from two sites, La Silla and Paranal, demonstrating the effect of parallax.
See other posts from February 2013


Or read more blog entries about: podcasts and videos, asteroids, optical telescopes


Gerald: 02/26/2013 11:31 CST

Can you tell a bit about asteroids with orbits around Lagrangian points (especially Earth-Sun) like 2010 TK7, or with horseshoe orbits like 2002 AA29; how stable are those orbits? I think, most people never heard about it. What is the state of a mission to one of those objects?

Bryan: 02/27/2013 06:54 CST

Can you discuss the implications of the potential comet impact of Mars in 2014? How might this affect the rovers/satellites? If its only a close pass(which is most likely) observational opportunities?

Andrew Planet: 02/28/2013 02:22 CST

How interesting, just yesterday on a Hubble telescope Google+ Hangout they were saying how land based telescopes were so much more behind in the quality of data we can presently obtain

Andrew Planet: 02/28/2013 03:32 CST

If the water on Earth came originally from comets in the early evolution of the solar system, does that mean that a Goldilocks zone also incorporates a standard trajectory of early comets in the possible habitable zone of a planet from its star?

Andrew Planet: 02/28/2013 03:42 CST

No matter where life's original organic seed came from, be it comets or not, the most important factor is in it propagating itself by the virtue of a Goldilocks habitable zone or environment.

Leave a Comment:

You must be logged in to submit a comment. Log in now.
Facebook Twitter Email RSS AddThis

Blog Search

Essential Advocacy

Our Advocacy Program 
provides each Society member 
a voice in the process.

Funding is critical. The more 
we have, the more effective 
we can be, translating into more 
missions, more science, 
and more exploration.


Featured Images

Jupiter on May 20, 2016, from Pic du Midi Observatory
Saturn from Pic du Midi Observatory, May 21, 2016
Mars near opposition from Pic du midi Observatory, 2016
BEAM with expansion grid overlay
More Images

Featured Video

The Planetary Post - A Visit To JPL

Watch Now

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!