Sept 18/19th Meteors
September 19, 2008 10 Comments
Observing conditions were fairly good last night, though some clouds moved through during the hours right before dawn.
Last night saw my first detection of a possible Delta Aurigid. I say possible because there is evidence that this shower should not even be active till next month. So what was this particular meteor? Data from decades of naked eye observers suggest that both the September Perseids and the Delta Aurigids are active, though at very low levels. Since both showers radiate from the same part of the sky, my camera cannot differentiate between them. To do that requires calculating the orbit of the meteor which needs observations from at least 2 cameras separated by 50-100 miles.
The other possibility is that the meteor is not related to either shower and is just a background Sporadic. Video data over the past few years suggest that neither shower should have been active last night. One of the reasons why a large number of amateurs and I are operating cameras every night is find answers to questions like these.
Date TotalTime TOT SPO ANT DAU
2008-09-19 UT 9h 34m 16 12 3 1
TOT – total # of meteors detected
SPO – Sporadics (meteors not affiliated with any particular meteor shower)
ANT – Antihelions (meteors coming from the opposition region, opposite the direction of the Sun)
DAU – δ-Aurigids (Delta Aurigids)