Tuesday 20 October 2009

Centuries old celestial dust trails to produce Orionid meteors visible in both hemispheres 21-23 October 2009 [links to sky maps]


Orionid 2008 from NCDCR

In the International Year of Astronomy Australians will be able to see what is predicted to be a splendid celestial night show from 21 to 23 October 2009 peaking on Thursday night.

Radiating out across the sky from a point between the constellations Gemini and Orion and just below Betelgeuse (Orion's red star) will be meteors caused by ancient debris from Halley's Comet.

On average the Orionid shower produces 20 meteors every hour at its peak (less seen with the naked eye in Australia) and 2am to 4am looking east to north-east is probably the best time for viewing from the Southern Hemisphere.

NASA information page
Sydney Observatory night sky map for October 2009 This star chart shows the stars and constellations visible in the night sky for Sydney, Melbourne, Brisbane, Canberra, Hobart, Adelaide and Perth for October 2009 at about 8.30 pm (summer time). For Darwin and similar locations the chart will still apply, but some stars will be lost off the southern edge while extra stars will be visible to the north. Stars down to a brightness or magnitude limit of 4.5 are shown on the star chart. To use this star chart, rotate the chart so that the direction you are facing (north, south, east or west) is shown at the bottom. The centre of the chart represents the point directly above your head, called the zenith point, and the outer circular edge represents the horizon.
Orionid Sky Map 1
Orionid Sky Map 2

1 comment:

admin said...

Great post. Thanks for sharing!