Sunday, May 22, 2011

Hygiea in Libra

Hygiea is a big black carbonaceous asteroid, currently in Libra. It's the fourth largest but has a very low albedo of 7% which means it only reflects 7 percent of the light from the sun. It currently in a favorable opposition and is about mag 9.2. I found it (I think) with my 8" dob just about 3° north of Sig Lib. At least there was a 9.2 mag object that shouldn't be near HR5620 according to CdC. If that is the case, Hygiea is a bit east of the position predicted by CdC, which is not unusual. In order to verify it, I'll have to take another look next time the sky is clear to see if anything has moved. That may take awhile. I think we've only had two clear nights this year! Today was a rare sunny day and we drove to St. Louis for some C1, C2 action with Daryl Lipscomb. Zigzags had 2 squares of C2 and three of C1 and Daryl called a fine dance.

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