tag:blogger.com,1999:blog-8565737623121795004.post4442662084943897384..comments2023-11-29T13:13:23.022+00:00Comments on newgate news: Asteroid round-upMacheathhttp://www.blogger.com/profile/04451439759398780345noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-8565737623121795004.post-23940694243332315982014-02-04T09:50:48.555+00:002014-02-04T09:50:48.555+00:00JH, it was worth a check; 2014CE got within 570,00...JH, it was worth a check; 2014CE got within 570,000 km of us without being seen on February 1st.Macheathhttps://www.blogger.com/profile/04451439759398780345noreply@blogger.comtag:blogger.com,1999:blog-8565737623121795004.post-17556333414182856642014-02-03T10:40:08.338+00:002014-02-03T10:40:08.338+00:00Just double checking any updates.Just double checking any updates.James Highamhttps://www.blogger.com/profile/14525082702330365464noreply@blogger.comtag:blogger.com,1999:blog-8565737623121795004.post-54698732814819143422014-02-01T12:53:03.733+00:002014-02-01T12:53:03.733+00:00Don't worry, JH, there'll be another one a...Don't worry, JH, there'll be another one along in a minute.<br /><br />AKH, I doubt it; so many people have been crying 'wolf' recently that the easiest thing to do is ignore all the warnings.<br /><br />NS, an interesting thought, especially given that recent research suggests perturbation is much more common than previously believed.<br /><br />The risk of inaccuracy must be increased by the fact that the observations come from a number of different sources; certainly there are plenty of warnings about margin for error attached to the published ephemerides and orbital predictions.<br /><br />It's out of my league - I just count 'em as they go by - but the Minor Planet Center might have the information.<br /><br />Are you writing on this elsewhere? If so, please feel free to link.<br /><br />(In an utterly charming accidental metaphor, spellcheck wants to change 'ephemerides' to 'shepherdesses'.)Macheathhttps://www.blogger.com/profile/04451439759398780345noreply@blogger.comtag:blogger.com,1999:blog-8565737623121795004.post-77283146582250598732014-02-01T10:29:15.003+00:002014-02-01T10:29:15.003+00:00I have something of a concern. Given detection of...I have something of a concern. Given detection of all these relatively small asteroids, do we have the capability to recognise them if and when they return.<br /><br />As I understand it, asteroids making such repeat passes can really only be labelled as 'seen before' if we have accurate information on both mass and orbit.<br /><br />There is some doubt in my mind that we have this information with sufficient accuracy. This is especially on mass, for which we only have the intensity of reflected solar illumination as a proxy.<br /><br />If anyone has information on this, it would be good to know what are the current limits. I might get round to a more thorough look myself, in due course.<br /><br />Best regardsAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8565737623121795004.post-11558561880270543022014-01-31T20:26:33.128+00:002014-01-31T20:26:33.128+00:00"If it were to hit us, the results could be c..."If it were to hit us, the results could be catastrophic."<br /><br />Might wake us up to genuine risks though.A K Haarthttps://www.blogger.com/profile/05897490979828603179noreply@blogger.comtag:blogger.com,1999:blog-8565737623121795004.post-85150588295201808252014-01-31T19:41:52.803+00:002014-01-31T19:41:52.803+00:00Phew, nearly missed this, been a bit busy. Phew!Phew, nearly missed this, been a bit busy. Phew!James Highamhttps://www.blogger.com/profile/14525082702330365464noreply@blogger.com