There was a very bright green fireball seen by hundreds of eyewitnesses surrounding Lake Michigan early this morning at 1:25:13 AM Central Time (February 6, 2017). The reports from these individuals and the video information from dash cameras and other cameras in the region indicate that the meteor originated 62 miles above West Bend, Wisconsin and moved northeast at about 38,000 miles per hour. It disrupted about 21 miles above Lake Michigan, approximately 9 miles east of the town of Newton. The explosive force of this disruption was recorded on an infrasound station in Manitoba, some 600 miles away – these data put the lower limit energy of the event at about 10 tons of TNT, which means we are dealing with a meteoroid – orbit indicates an asteroidal fragment – weighing at least 600 pounds and 2 feet in diameter. Doppler weather radar picked up fragments (meteorites) falling into Lake Michigan near the end point of the trajectory.
Ground track and Doppler radar signature (done by Marc Fries at NASA Johnson Space Center); an animation of the orbit and approach of the meteoroid is being prepared and should be available soon. We will continue to look at data as it comes in and revise the calculations if necessary.
We observed a fireball the morning of May 4 around 12:50am EDT, traveling southwest at about 77,000 mph over the Nantahala National Forest on the Tennessee/North Carolina state line. At its brightest point, it rivaled the full moon. According to Dr. Bill Cooke in NASA’s Meteoroid Environment Office at NASA’s Marshall Space Flight Center in Huntsville, Ala. , “The fireball was bright enough to be seen through clouds, which is an attention getter. In Chickamauga, Ga., one would have thought it was a flash of lightning lighting up the clouds beneath.”
The Perseids are ramping up! Here’s a Perseid meteor captured by the NASA All Sky Fireball Network on August 4th. The shower will peak the morning of August 13th. With a near-new Moon, we may get a good show that morning!
Each spring as Earth passes through the debris trail from Halley’s Comet (1P/Halley), the cosmic bits burn up in our atmosphere and result in the annual Eta Aquarid meteor shower. This year the peak will occur on May 6 about 9 AM EDT with meteor rates of about 30 meteors per hour near peak. Best viewing is just before dawn on May 6. Eta Aquarids zoom around the solar system at speeds near 148,000 mph. Unfortunately for meteor shower observing enthusiasts the moon will seriously hampered viewing of the ETAs this year. reducing the peak rate to under 20 meteors per hour.
The Eta Aquarids are pieces of debris from Halley’s Comet, which is a well-known comet that is viewable from Earth approximately every 76 years. Also known as 1P/Halley, this comet was last viewable from Earth in 1986 and won’t be visible again until the middle of 2061. The annual Eta Aquarid meteor shower gets its name because the radiant — or direction of origin — of the meteors appears to come from the constellation Aquarius.
Not even clouds could obscure the International Space Station as it passed directly over Huntsville, Ala. on the evening of June 13 at 9:15 p.m. CDT. Shining as bright as the planet Venus, the space station took nearly four minutes to traverse the sky before disappearing in the murk to the Northeast. Its passage was watched by the all sky meteor camera at Marshall Space Flight Center, which took this composite image.