May 4 & 5 Meteors

We are now passing closest to the orbits of the Eta Aquariid (ETA) meteor stream. As a result, the number of detected ETAs has been increasing over the past 5 nights (6 on 5/1, 4 on 5/2, 9 on 5/3, 12 on 5/4 and 12 on 5/5).

My good friend Salvador Aguirre of Hermosillo, Mexico operates an all-sky camera and has been posting images and movies of the ETAs on his blog.

I was outside at 4 am this morning observing comets. Even though I wasn’t watching for meteors I did see one ETA. Comet C/2015 ER61 (PANSTARRS) is located only a few degrees from the ETA radiant. While observing the comet in 10×50 binoculars, I was able to watch an ETA brighten to visibility, move about a degree or two, leave behind a short lived trail and then flare out. This all happened within the small field-of-view of the binoculars. It was quite a sight.

The ETAs will continue to be good for the next few nights though the amount of dark time at the end of the night will be severely shortened by the Moon by early next week.

Obs Date(UT)     Time    TOT SPO ANT XLI ABO PBO ETA ELY SOP
SAL 2017-05-05  09h 11m   24  10  0   0   -   -   12  1   0
SAL 2017-05-04  09h 13m   27  13  0   1   0   0   12  0   1

SAL - SALSA3 camera in Tucson (Carl Hergenrother)
VIS - Visual observations from Tucson (Carl Hergenrother)
Time - Total amount of time each camera looked for meteors 
TOT - Total number of meteors detected
SPO - Sporadics (meteors not affiliated with any particular meteor shower)
ANT - Anthelions
XLI - April Chi Librids
ABO - Alpha Bootids
PBO - Phi Bootids
ETA - Eta Aquariids
ELY - Eta Lyrids
SOP - Southern May Ophiucids
Oth - other minor showers
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