2005YU55

[logicize]

Hello,<br /><br />I have a couple of questions regarding this object.<br /><br />Do you know if the effects of earths gravity on this object during the April 2010 pass included when calculating the nearest distance of the November 2011 encounter.<br /><br />Also, I was wondering if you might know why some of the closest passes for 2005YU55 in April 2010 and November 2011 are excluded from the NASA page at:<br /><br />http://neo.jpl.nasa.gov/risk/<br /><br />As well as the detail page for this object, here:<br /><br />http://neo.jpl.nasa.gov/risk/2005yu55.html<br /><br />And even the NeoDys page as well, here:<br /><br />http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2005YU55;risk<br /><br />but are actually included on the object detail page, here:<br /><br />http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2005YU55;main<br /><br />Thanks

 

[MeteorWayne]

Yes, the approximate gravitaional effects are included in future calculations.<br /><br />The first link only includes listings for above zero chances of impact. It is listed there, but with the first non-zero chances of impact in 2036.<br /><br />Since all the pages are impact ones, if the chance is zero, they would not be listed. Obviously, beginning in 2036, the error ellipse is large enough to include the earth (uncertainlty grows as you project into the future.)<br /><br />If you examine the last link, the object detail page, you will note that the error ellipse is smaller than the earth-object distance, so the impact risk is zero in 2010 and 2011. <br /><br />By the way, welcome to Space.com!! <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[logicize]

Thanks!

 

[MeteorWayne]

I hope what I said was logical <img src="/images/icons/smile.gif" /><br />{rim shot} <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[MeteorWayne]

In reply to the other thread you started....<br /><br />Perhaps the period of observation of this site is not as long as those others? I'll have to do some research.<br /><br />BTW, as proper ettiquitte, you should not have started a new thread, but rather added to the previous one.<br /><br />I see the moderator agreed with me <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[logicize]

Sorry about that. Here was the original question:<br /><br />Hello again, <br /><br />Thanks for the quick answer to my last question. <br /><br />The Harvard site: <br /><br />http://cfa-www.harvard.edu/iau/lists/PHACloseApp.html <br /><br />Estimates the closest approach at 0.001065 AU While the NeoDys site below lists the closest approach at 0.0032867 AU. <br /><br />http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2005YU55;main <br /><br />What would be the cause of such a great difference in their estimates? Also, if the Harvard estimate were used, should the object appear on the risk page at NASA? <br /><br />Thanks,

 

[MeteorWayne]

See my answer above.<br />I'm still looking to see if my guess was correct. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[alokmohan]

Any prediction of doomsday?

 

[qso1]

Don't worry, there will be plenty of doomsday predictions, websites, myspace pages, etc. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[witgenestone]

But maybe SDC have saved logicize <img src="/images/icons/smile.gif" />.

 

[logicize]

I don't think this ones big enough for doomsday, it's only about 426 feet across. If it does hit though and you find yourself to be in its path, you might want to quickly find a good helmet.

 

[logicize]

I don't think it's really much of a concern, I think they are only estimating the size at 120 meters. I'm not sure, but unless it hit a populated area it probably wouldn't do much damage. Have you had any luck yet?

 

[MeteorWayne]

No, been a busy weekend, and it will take some real digging. Hopefully tomorrow, I'll have the time. Sorry <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>