You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Lunar Observing Previous   Index   Next   Flat   astrokido sage Reged: 06/09/08 Posts: 248 Loc: Phoenix, AZ Re: Impact object diameters from crater diameters?       07/28/08 12:05 PM Edit   Reply   Quote   Quick Reply:   Super! A run through the calculation shows a 1km crater was created by a 20-meter asteroid in just 12.5 seconds. That's a crater 50 times the size of the rock. Just what I wanted to know, thanks Jim. -------------------- - Gill C. - All opinions subject to a speed limit of 299,792,458 m/s unless noted otherwise. Nikon D40 Bushnell 10x25 Zhumell 20x80 Celestron Cometron CO-100 binochair CN gallery skyatlas.rgbstore.com - free charts & more cool stuff Post Extras       Entire thread Subject Posted by Posted on Impact object diameters from crater diameters? astrokido 07/26/08 10:58 PM Re: Impact object diameters from crater diameters? Jim Mosher   07/28/08 09:36 AM Re: Impact object diameters from crater diameters? astrokido   07/28/08 12:05 PM Extra information 2 registered and 2 anonymous users are browsing this forum. Moderator:  desertstars  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 172 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements Home

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