Rings around an Asteroid
Posted in Astronomy at 13:00 on 10 April 2014
I haven’t done an astronomy post for ages.
This one intrigued me. An asteroid with a ring system? Yes it would seem.
The animation and occultation measurements below appeared on Astronomy Picture of the Day on 9/4/14.

Denis Cullinan
10 April 2014 at 19:16
Hello Jack—
Your gardening area looks good to me. Sunny too, which is a rarity in a city like New York. This season I’ll be showing my daughter how to do air-layering. I await with dread the breaking of dormancy of my Montmorency cherry, which looked horribly diseased as autumn came on last year.
We’re in the same groove as regards the universe (which I don’t love). I just sent my brother the same message about the ringed asteroid. I liked the cleverness of the experiment that connected the variations of light intensity with the structure of the ring system.
jackdeighton
10 April 2014 at 19:38
The garden is on the generous side but I don’t think quite as large as the one we left. The different shape makes it hard to tell. There’s a lot to do to get it anything like the old one.
Sunny! I suppose it has been so far – a relative rarity in Scotland in April though.
The experiment was certainly well designed. That graph reminded me of an infra-red spectrum of a chemical.