STEREO’s View of ISON

Here’s a short video made from images taken by the Solar Terrestrial Relations Observatory (STEREO – A). The video was made over a five day period from 20 to 25 November 2013 (Image Credit: NASA/STEREO).

ISON is heading towards perihelion, the point in the orbit where it is closest to the sun as it passes around. That distance is going to be about 0.013 AU on 28 November.

ISON is also in the region where, if it is going to break up the next few days is when it is going to happen. I read somewhere ISON needs to be around 200 meters in diameter to survive and current estimates has it between 500 meters and 1.2 km so my fingers are crossed it will make it around and give us a nice show on the way out.

You will notice another object crossing ISON’s path about the time ISON is in line with Mercury. That is another comet, Comet Enke.

See this and other versions leading up to this video here.