How do astromomers calculate how far away Hale-Bopp is and how big it is?

Subject: How do astromomers calculate how far away Hale-Bopp is and how big it is?

Date: Sun Apr 6 11:16:23 1997
Posted by: Sara Christenson
Grade level: 7-9
School/Organization: Minot High School - Central Campus
City: Minot State/Province: ND
Country: USA
Area of science: Astronomy
Message ID: 860343383.As

Message:

How do astromomers calculate how far away Hale-Bopp is and how big it is?
I am doing a report on Hale-Bopp and how math is used in the research
of Hale-Bopp.  I would like to know how they calculate it's distance from
us and it's size.  I would also like to know how they figure out when it    
will appear again.  Thank you.

Re:How do astromomers calculate how far away Hale-Bopp is and how big it is?

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