Comet ISON breaks apart !

[APODman]

IAU published:


"Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network

COMET C/2012 S1 (ISON)
H. Boehnhardt, C. Tubiana, N. Oklay, and J. B. Vincent, Max Planck
Institute for Solar System Research, Katlenburg-Lindau; and U. Hopp, C. Ries,M. Schmidt, A. Riffeser, and C. Goessl, Astronomical Institute, Ludwig Maximilian University, Munich, report the detection of coma wings in Laplace-filter-processed CCD exposures of comet C/2012 S1 obtained with the 0.4-m telescope of the Mt. Wendelstein Observatory on Nov. 14.16-14.21 and 16.16-16.21 UT. The arclet-like wings appeared in opposite direction from the nucleus at position angles 15 and 195 deg on Nov. 14 and at p.a. 25 and 205 deg on Nov. 16. The coma wings extended straight from the nucleus for about 4700 km on Nov. 14 and 13500 km on Nov. 16 on either side of the extended radius vector and continued in streamers of the plasma tail. No coma wings were found in similar exposures obtained on Nov. 13. The coma wings suggest the presence of two or more sub-nuclei with individual expanding atmospheres in the overall cometary coma and may indicate recent
nucleus splitting in the comet."


Confirmation of the breakup of the nucleus of the comet ISON in two fragments

Image captured by Jean-Francois Soulier yesterday morning, Nov. 16, between 0500 and 0600 UT and processed by Toni Scarmato.




Break up of the nucleus of Comet ISON detected in the image of Bruce Gary of November 14, 2013, processed by Toni Scarmato.




source of images:
http://digilander.libero.it/infosis/homepage/astronomia/comet1.html


It´s difficult to think what will remain after perihelion passage  


Regards

[blotz]

NOO+O E99999

[tuto99]

NOOOOO THIS COULD HAD GONE SO MUCH BETTER!!!

[APODman]

Despite the fragmentation observers in the Earth will don't perceive it, for now.

In a robust and complex study, the astronomer Ignacio Ferrín points that the cloud of debris expands very slowly, with a speed of expansion between 2 and 10 m / s. At these speeds the cloud takes a long time to get to three seconds of arc, which would be required for its fragments can be separated by ground-based telescopes.

The graph shows that the worst case scenarios (25% models) the cloud will not be able to reach 3 seconds, before the arc enters the comet sunlight, thus making it difficult to detect the fragments. In the best scenarios (75% of the models) the cloud reaches more than 3 arc seconds before entering the solar glare, making it possible to detect the fragments by ground-based telescopes.

The model also shows that the debris cloud will be easily detected after perihelion ... if it survives.



source:
- http://astronomia.udea.edu.co/cometspage/MODELRESULTS.html

[ ]´s

[APODman]

And simulations in the Universe Sandbox reaches the same result !

Creating a ISON in one simulation (orbital elements from JPL Horizons), and explode it in fragments with expansion velocity of 2.0 m/s to 5.0 m/s, the cloud of debris only will be discernible from Earth after perihelion.




[ ]´s