The discovery of a new triple asteroid – (93) Minerva

Hello,

So I was quite mysterious after my observations at Keck Observatory, and I briefly mentioned that we discovered something interesting during the night. I will give a little bit more details in this blog since the IAU circular announcing the result is about to be published. To summarize, the high angular resolution images provided by the Keck Adaptive Optics system revealed that the asteroid 93 Minerva possesses 2 tiny km-sized moons in orbit around the large 140-km primary.

A fantastic night at Keck observatory – A follow-up

Hello,

Yesterday I was observing at Keck Observatory as you could read in my previous post. I was not very positive when I wrote my post since the summit was in the fog and clouds. A few minutes after I finished writing it up it got clear and we could open the telescope just on time to start observing (see the allsky picture below). This post is a brief report about what happened last night.

Jupiter got a bruise.. only one but a large one.

Hello,

Last Sunday I posted on my blog an announcement about the possible recent impact on Jupiter atmosphere. I did not realize that a lot of my colleagues read this blog. On Sunday evening Paul Kalas, an adjunct professor at UC-Berkeley, but also a colleague and a friend, contacted me to let me know that he was observing at Keck Observatory and could potentially observe this feature.