11/11/2016 – Ephemeris – Two Taurid meteor showers active now
Ephemeris for Veteran’s Day, Friday, November 11th. The Sun will rise at 7:35. It’ll be up for 9 hours and 43 minutes, setting at 5:18. The Moon, 3 days before full, will set at 4:49 tomorrow morning.
We are situated between two supposed peaks of two meteor showers, the South Taurids and the Northern Taurids. Their radiant points are roughly north and south of the face of Taurus the bull, which looks like the letter V of stars lying on its side. Both meteoroid streams belong to Encke’s Comet, the comet with the shortest known period of 3.3 years. The far end of the streams end up near Jupiter’s orbit, which allow the giant planet to split and broaden the meteoroid streams. Another feature of these streams is that they seem to be made of small pebbles rather than grains. When these pebbles hit our atmosphere at 17 miles (28 km) per second they will appear very bright. Really bright meteors are called Fireballs.
Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.
NASA has three widely spaced sets of all-sky cameras which allow it to get 3-D views of fireballs entering the Earth’s atmosphere. which allow the measurement of velocity of the object and the determination of the meteoroid’s orbit before it hit Earth’s atmosphere. For more information go to: http://fireballs.ndc.nasa.gov/