May 29, 2020

24.03.11: Comet Elenin: A Great Show, But No Need for Bruce Willis.

There’s a scene in the otherwise fairly decent 1990’s disaster flick Deep Impact where the President played by Morgan Freeman reveals that a cover-up has been ongoing for about a year to keep an impending inbound doomsday comet a secret. Such drama makes most backyard observers chuckle inside; we know that on any given night, legions of observers are looking skyward, hoping to find a body that could immortalize our efforts. By day and on cloudy evenings, we’re at our keyboards, sharing data and computing orbits. Our tools are homemade observatories, sometimes housing instruments that would make some universities blush. It’s extremely unlikely that the “Big One” would slip by the worldwide astronomical community. That’s why I got a brief chortle this morning out of a message board post suggesting that one only need conduct a brief (insert favorite search engine here) scouting of the ‘Net for C/2010 X1 Elenin. The name was familiar to me and observers everywhere; This comet may put on the summer’s best show of the year as it passes perihelion on September 10th at 0.45 A.U. from the Sun and moves into the predawn sky, well positioned for northern hemisphere viewers. Then, in October, Elenin will pass within 0.3 A.U. (about 28 million miles, or 112 lunar distances) from the Earth… Yes, Elenin will probably put on a fairly decent show. One key indicator for this is that it was first spied about 4 A.U. from the Sun; this means that it’s fairly large and intrinsically bright, much like Hale-Bopp. The geometry of the pass is also very similar to the passage of comet McNaught in 2007, which means we may be in for a decent show as Elenin unfurls its dust tail on its way out of the inner solar system. But let’s just dispel some of the gathering Woo out there and state that there is ZERO chance that Elenin will impact the Earth. This is just one cosmic cat that even the likes of Morgan Freeman couldn’t keep in the bag. And no, myself and the legions of astronomers behind me are NOT in cahoots with Big Brother in hushing things up, as we have yet to receive one single pay off, and do our debunking on a pro bono basis.  And, much like comet Halley in 1910, Elenin will unfurl its tail in our direction, but remember, a cometary tail is mostly composed of… nothing! We’re talking a vacuum many orders of magnitude better than what can be done in a laboratory. Yes, nasties such as cyanide have been detected in the spectra of comets, but we aren’t due for a cyanogen bath this summer. Will Elenin sprout the hysteria seen in 1910? You’d think we’d have learned in a centuries time… but as Mark Twain once said, “A lie can travel ‘round the world while the truth is just puttin’ on its shoes…” and that paradigm is never more true than in today’s wired-in world. At very least, “Comet Pills” may be only an E-bay order away this time…



  1. Harry says:

    Nice article.
    I’ll be blowing the dust off my telescope.
    Yeah, it’s been awhile.

    I”m just surprised that not even one doomsday clown has commented on your site after four months…

  2. David Dickinson says:

    I know… crank mail is supposed to be a sign of making it, right? Maybe a tweek of the SEO for the post is in order… thanks for mentioning. Will be watching for Comet Elenin as well, but I think Bruce can rest easy.


  1. [...] AU of the Earth on March 5th 2012. And of course, in other cometary news, NON-EARTH impacting comet C/2010 X1 Elenin (no, we’re NOT in cahoots with the government to cover things up, as our destitute pro bono [...]

  2. [...] curious bit of hype sprung up in 2011 around Comet Elenin, which promptly broke up and dissipated without even putting on a show. And the supposed [...]

  3. [...] nieco szumu powstały w 2011 roku wokół komety Elenin , która szybko się rozpadła i rozproszona, nawet nie na pokaz. A rzekome trzęsienia ziemi, [...]

  4. [...] also warned of the possibility that ISON may go the way of Comet Kohoutek in the 1970’s or comet Elenin, both comets that fizzled after much media [...]

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