November 2013

UPDATE: New ISON and Encke Movie

Comets C/2012 S1 (ISON) and 2P/Encke continue to race through the solar system in this updated sequence! CLICK TO ANIMATE! [Image Credit: Karl Battams/NRL/NASA-CIOC]

ISON, Encke, Mercury, and Home

Yesterday, amateur astronomers online were very quick to point out that comet ISON had entered the field of view of the NASA STEREO-A Heliospheric Imager 1 ("HI-1A") camera. It wasn't much to look at, as we only had available our low-resolution "beacon" data, but nonetheless you could clearly see a bright streak on the left-hand side of the HI-1A images.

On The Wings of ISON

Blog written by Dr. Padma A. Yanamandra-Fisher, Senior Research Scientist, Space Science Institute, Boulder, CO and Admin of Facebook group, CIOC_ISON.
Posted on her behalf by Karl Battams.

Did ISON Fragment?

One of our primary functions as coordinators of the Comet ISON Observing Campaign is to encourage and foster data sharing and discussion regarding comet C/2012 S1 (ISON). This brief blog post is to do just that.

What might happen to Comet ISON from here on out?

This post was written by Matthew Knight with input from Dr. Carey Lisse.

November is here and Comet ISON is just a bit over three weeks from it closest approach to the Sun (astronomers call this “perihelion”). As we’ve said from the beginning, it is impossible to predict exactly what ISON will do. However, given numerous observations of previous comets, we do have a pretty good idea of the range of possible outcomes. Now that ISON has almost completed its journey from the Oort Cloud to within a million miles of the Sun’s photosphere, it seems like a good time to go over what might happen.

Of Comets and Contrails

Full frame image taken by E Warner on 26 Oct 2013 from Alexandria, VA.
(With dust spots on my sensor included!)