Comet C/2010 X1 Elenin – no reason to be afraid
A new comet creates excitement in the press. Experts say it’s just a harmless ball.
“Who is afraid of a dirty snowball?” ask the scientists from Astronomical Observatories. The answer is given by the same scientists: “Those people who fear every time a fool announces the end of the world. Or those who are certain that on December 21, 2012 something will happen. And because nothing will happen they will say it was so subtle that we did not realize.”
Position of C/2010 X1 Elenin with respect to Sun and Earth. Photo: Romanian Astronomical Observatory
This time it’s about Comet C/2010 X1 Elenin, which created much stir in the press lately. C/2010 X1 is just a “dirty snowball no bigger than 2-3 km, which rotates around the sun and doing undisturbed its job”, the astronomers stated.
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On October 16 the comet will be “only” 35 million km away from Earth (34,982,790 km) and this fact sparked a new series of apocalyptic scenarios in the media: “What people do not understand is that a small-scale astronomical distance is quite enormous if you report it to the size of the bodies involved (Earth 12,600 km, C/2010 X1 Elenin ~ 3 km),” the experts said.
There are other examples of comets that passed “dangerously close” by Earth: in 1910 our planet intersected with the tail of Comet 1/P Halley and (recently) on August 15, 2011 the comet 45P/Honda-Mrkos-Pajdusakova passed by at 8.990.960 km (almost 4 times closer than C/2010 X1 Elenin path). Despite all these “close” encounters nothing happened to us.
Comet C/2010 X1 (Elenin), a long-period comet, was first spotted by Russian amateur astronomer Leonid Elenin on 10 December 2010, using the remote control of the International Scientific Optical Network’s robotic observatory located in Mayhill, New Mexico, U.S.A. When it was observed, C/2010 X1 featured an apparent magnitude of 19.5 thus being 150,000 times fainter than viewed with the bare eye. Leonid Elenin calculated that C/2010 X1 core has a diameter of about 3–4 km.