I need the assistance of an amateur atrsonomer or major science geek, if we have any out there, to help me identify what I may have seen on the evening of Monday, December 13 at approximately 5:45 p.m.

I was driving home from work on the Broadway Extension, headed northbound. I was just south of the I-44 interchange, getting ready to cross the highway when I saw a ball of light speeding across the sky in a N/NEasterly direction. From my vantage point it had a "greenish" glow to it. There was no tail, no "trail" of sparks or debris as I've seen with other similar lights (meteors, space junk) that I've seen in the past.

I tweeted out my sighting and another person saw the same thing, but described it as a "giant fireball."

The light disappeared mid-sky, at approximately 60 degrees from the northern horizon. It didn't blink out necessarily, just stopped.

I assume it was something re-entering the atmosphere, but other times when I've seen such phenomena there is usually some kind of tail or residual light that follows it. With this, there was none.

Did anyone else see this / experience it?
Does anyone have any better guesstimate as to what it could have been?

Inquiring minds want to know.