Perhaps the return of the great comet in 1680

After a year in the sky in the Northern Hemisphere are expected to appear with extraordinary brightness of the comet, like the full moon — perhaps, who returned again the great comet in 1680.

September 21, 2012 Vitaly Nevsky from Vitebsk and Artem Novichonok Kondopoga on images obtained with the
0.4-meter reflector known Russian brand

"Santel" got a new image of the comet. The discovery was announced three days in jail later — on September 24. Network by name ISON (International Scientific Optical Network) received index comet C/2012 S1 (ISON). At the opening of the comet was beyond the orbit of Jupiter, and was seen as a small, but still extended object 18.8 magnitude.

The comet was unusual.

At perihelion, in late November 2013, it will pass right by the photosphere of the Sun, at a distance of order of the star. This means that its brightness is extraordinary — under the current, very rough estimate, it will be comparable to the brightness of the full moon (-10m and -12,7 m, respectively). With much smaller angular size it will make a fantastic impression on the Northern Hemisphere — here is the best of its visibility. However, the nature of comets poorly correlated with current scientific views, and the brightness of the weather may not be the case — has changed in the one and in the other direction. If the comet near the sun will not burn on the return path from the sun, in January 2014, it will be relatively close to Earth — at a distance of 0.4 AU This allows us to expect that during this period it will be an exceptional brightness and measured negative values.

Comet C/2012 S1 (ISON) moves close to a parabolic orbit (according to current estimates, the eccentricity is 0.999999964) inclination of 62.36 degrees to the ecliptic plane. This could mean that either the first comet approached the Sun, or regularly comes back to him, as a long-period comet.

Bortl astronomer John (John Bortle) noted that the orbital parameters of the comet C/2012 S1 (ISON) highly resembles the famous "great comet" in 1680. In this case, we can talk about the same celestial body, bounce back to us three and a half centuries later.

Comet's perihelion passage is often accompanied by heavy-duty emissions solar material at the "contact." Why is unclear. Image: Observatory SOHO / NASA

Comet 1680 is noteworthy. It was the first comet discovered (German astronomer Gottfried Kirsch) using astronomical instruments — the telescope. Also known as "Newton's Comet." Its brightness and especially very long tail it struck contemporaries, it captures the famous seascapes Love Vershuer Peters (on the splash screen).

Comet in 1680, perhaps the first of the recorded family comets Creutz — in this case it must be periodic. Why periodic comets can pass many times have most of the solar photosphere with no apparent harm to themselves — a mystery. However, not the only one.

The passage of the comet near the Sun's surface is usually accompanied by a powerful outburst of solar material in "contact" — why is unclear. But this means that the passage of the perihelion and a bright comet, the comet C/2012 S1, may be accompanied by very interesting phenomena.

Perihelion passage of Comet Lovejoy from the 2011 W3. Shows clearly that the tail of a comet near the sun is not oriented in the direction "of the light." Image: Observatory SDO (NASA)

The tail of comets passing through the inner regions of the solar corona, contrary to common opinion, is not oriented in the direction opposite luminary — a fact interesting in every way. A year later, we will have an opportunity once again to verify this observation. There are comets and other mysterious properties.

Traditionally, comets were considered harbingers of the future, very significant change in the world. Leap in 1680 seems to confirm this. At least in Russia. Nearing the climax of profound internal crisis — penalty Avvakum and simultaneous completion of the reign of Fedor Alekseevich. There comes a radically new
age associated with the name of Peter I.

Whatever these traditional views of the phenomenon of comet C/2012 S1 can also lead interesting and important changes — in science.

Category: Astronomy and Space

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