ASTEROID 2007 TU24 GETTING CLOSER

[cyclonebuster]

I scream you scream we all SCREAM for ICE CREAM!

 

[cyclonebuster]

You are correct we can learn a lot from that. Example: If it is coming closer than we think.

 

[MeteorWayne]

It isn't. <br /><br />When YOU SCREAM AND YELL you just appear like a silly person, who doesn't understand the subject you are ranting about!!!!!!! <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>

 

[cyclonebuster]

You must have good hearing I can't hear a thing?

 

[MeteorWayne]

Perhaps you are unaware, so I'll cut you a break and educate you.<br /><br />On the Interwebz, unnecessary use of CAPITAL LETTERS and Exclamation points!!!!!!!!!!!!!!!!!!!!1 is considered screaming, and in poor taste. <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>

 

[cyclonebuster]

Who cares?

 

[MeteorWayne]

And I notice you never responded to the information contained in my post:<br /><br />"However, the object has been removed from the possible impactor list at JPL, because despite the close approach of the orbits, the asteroid and the earth will never be close enough (based on current data) for a possible impact. <br />And most certainly for this close approach"<br /><br />Except for responding to my admonition to stop screaming.<br /><br />Any comment on the content?<br /><br />Wayne <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]

The rest of the community here at SDC cares. <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>

 

[cyclonebuster]

Perhaps, they will place it back on the impactor list after the 23rd and 24th observations at Goldstone. Who knows?

 

[MeteorWayne]

That is possible, since radar measurements will add very accurate position and velocity data.<br />We shall see.<br /> <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>

 

[cyclonebuster]

That is what I want to see: Velocity data and composition.

 

[MeteorWayne]

Unfortunately, we'll get very little compositional data from radar.<br />And the velocity is already pretty well constrained by the positional measurements, so it might cut the error by a few percent.<br />No big change in the orbital parameters can be expected.<br /><br />See how much more constructive a conversation this is?<br />Without all the hype <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>

 

[cyclonebuster]

What Hype?

 

[MeteorWayne]

Capital letters and exclamation points.<br />That's Hype.<br /><br />Now we are having a rational discussion. <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>

 

[silylene old]

<img src="/images/icons/laugh.gif" /> <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>

 

[cyclonebuster]

Negative that is type!

 

[MeteorWayne]

"Negative that is type! "<br /><br />??? <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>

 

[nimbus]

Can't you wrap your head around the difference between the path of an object on course to intersect Earth's orbit while Earth is elsewhere and one that intersects Earth's orbit while Earth actualy occupies the intersection point?<br /><br />You're screaming the batter will hit a homerun when the baseball is thrown at 2AM in the morning, hours after the game's done and everybody's gone home. <div class="Discussion_UserSignature"> </div>

 

[adrenalynn]

<font color="yellow">Sounds like a challenge, Adrenelynn </font><br /><br />Yup! Pray for good conditions out here. They've been abysmal the last few weeks.<br /><br />I'm keeping on top of the orbitals as they update, and have the Starry Night Pro 6 machine in the observatory plotting it 24/7. I'll be cheating and using the computer to guide the exposures since it's such a fast moving and small sucker. You're correct, though, this is exactly the kind of target I most enjoy. Transient and relatively difficult to image. I'm definitely all over this! <div class="Discussion_UserSignature"> <p>.</p><p><font size="3">bipartisan</font>  (<span style="color:blue" class="pointer"><span class="pron"><font face="Lucida Sans Unicode" size="2">bī-pär'tĭ-zən, -sən</font></span></span>) [Adj.]  Maintaining the ability to blame republications when your stimulus plan proves to be a devastating failure.</p><p><strong><font color="#ff0000"><font color="#ff0000">IMPE</font><font color="#c0c0c0">ACH</font> <font color="#0000ff"><font color="#c0c0c0">O</font>BAMA</font>!</font></strong></p> </div>

 

[MeteorWayne]

I don't consider it cheating at all.<br />This will be a pretty fast moving object, at the visibility limit. At least through the guider. Hopefully the CCD image will be easy to detect, but that presupposes the image being close to the center of the object.<br /><br />Hopefully if the orbit and aiming work, you could notice the position change in 10 or 15 minutes, but if you are off by 2 degrees, it won't work, since it won't be in the field. <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]

Updated through Jan 18.<br /><br />Miss distance still .0037 AU<br /><br />JPL EMoid has increased to Earth MOID = .0012501 AU <br /><br /><br /> # obs. used (total) 104 <br /> data-arc span 99 days <br /> first obs. used 2007-10-11 <br /> last obs. used 2008-01-18 <br /><br />Edit: this object will be within the range of medium sized scopes, maybe large binoculars, in the early morning hours of the 29th (for the US). It will be moving nearly 8 degrees per hour through Cassiopia.<br /><br />Fastest motion across the sky will be when it's at it's brightest~ 1600 UT on the 29th, in Camelopardalis.<br />If I'm doing this right in my head; that favors Asia.<br /><br />MW<br /><br /> <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]

As far as I know, this is the closest.<br /><br />This object was removed from the list of potential future earth impactors because the risk is zero. <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>

 

[symbolite]

When will we know if this encounter has changed its orbit enough to come by earth again or not? <div class="Discussion_UserSignature"> </div>

 

[MeteorWayne]

Well, the orbit itself will always remain "close" to earth.<br /><br />There will be some deflection, which will change the orbital parameters.<br /> After the close approach we will have a few weeks to observe it and obtain positional data to more closely define the new orbit.<br /><br />Here are the current numbers.<br /><br /><br />Element Value Uncertainty (1-sigma) Units <br />e =.5289884298196109 ----2.7717e-05 <br />a= 2.009668049248871---- 0.00011175 AU <br />q =.9465769034180701 ----3.5739e-06 AU <br />i= 5.801453676090179 ----0.00031386 deg <br />node= 127.1785636300871 ----0.0012999 deg <br />peri= 333.5942246408296 ----0.00066523 deg <br />M= 265.62429257736 ----0.0076286 deg <br />tp= 2454473.298914596043<br />(2008-Jan-07.79891460) 0.00103 JED <br /><br />period= 1040.602628966531---0.0002376 d<br />period=2.85 0.086797 yr<br /><br />n =.3459533831444689 ----2.8856e-05 deg/d <br />Q =3.072759195079672 ----0.00017087 AU <br /><br />How close the orbit comes to earth's orbit is given by this number<br /> Earth MOID = .0012501 AU <br /><br />Since this is the closest approach ever for this object, I am unsure whether the MOID will change after passage to only include future orbits, or if the number will stay the same including this orbit.<br /><br />So we will watch and see what changes occur.<br /><br />In any case, this object ios not expected to be a threat to earth, ever, since even if the orbit remains close to earth, the asteroid and earth will not be at the point where the orbits approach at the same time in the future.<br /><br /> <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]

Where'd you find the updated numbers? I'm looking everywhere, still no luck.