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(meteorobs) Hyakutake in April 1996



Guys - 

This is a cross-posting from our RASC net.  It's from Martin Snow of the Ullyses Comet Watch programme 
in Boulder CO. 

- Cathy

---------- Forwarded Message ----------

Greetings, Watchers!

I know that you're all observing Hale-Bopp these days, but if you could 
spend a moment checking your archives from last year I'd really 
appreciate it.  If anyone has any observations of comet Hyakutake on 
April 19th or later, please let me know.  

Observations on those dates would have been difficult since the comet was 
getting close to the sun.  There are a few such observations on the JPL 
website, including some excellent images taken by H. Mikuz, but we'd like 
to collect more if possible.  

In late April, Hyakutake climbed to higher solar latitude, encountering a 
less-dense, higher-speed, and smoother solar wind.  The comet's plasma 
tail responds with a smooth appearance.  Or at least that's what we 
predict, and what we have seen in the few observations that we have 
found.  We would like to find a few more observations to confirm this 
behavior.

Thanks!

Martin Snow
Laboratory for Atmospheric and Space Physics
University of Colorado
Boulder CO 80309-0392
snowm@miranda.coloradodot edu