June 19-24 Meteors

It has been hot in Tucson the past week. It’s even been hot at night. The severe heat wave and the first sign of the Southwest US Monsoon has combined to keep detected meteor rates low. Each night has been affected by some or all of the following: cirrus, forest fire smoke, dust, pollution and high nighttime temperatures. In case you are wondering, the camera works better when temps are lower so high temps can result in poorer sensitivity and fewer detections.

The image below shows one of the better meteors of the past week. The image was taken at 10:39 UT on June 21.

103911

Obs Date(UT)     Time    TOT SPO ANT SSS PPS SCA DPI JBO CAN
SAL 2017-06-24  05h 41m   10  9   0   0   0   1   0   0   0
SAL 2017-06-23  08h 13m   8   4   1   0   1   2   0   0   -
SAL 2017-06-22  05h 06m   10  7   2   0   1   0   0   0   -
SAL 2017-06-21  04h 54m   7   5   0   0   2   0   0   -   -
SAL 2017-06-20  02h 53m   3   3   0   0   0   0   -   -   -
SAL 2017-06-19  08h 15m   16  12  2   0   1   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 - Antihelions
SSS - Southern sigma Sagittariids
PPS - phi Piscids
SCA - sigma Capricornids
DPI - delta Piscids
JBO - June Bootids
CAN - c Andromedids
Oth - other minor showers

June 12-18 Meteors

The night-to-night variation in detected meteors is rather striking. Nightly numbers range from 8 to 23. For the most part the nights have been clear. The night with the lowest number (Jun 17) was nice and clear. I was even outside for much of that night and there the transparency was fine. June 18 was hampered by a lot of forest fire smoke. Not sure if this was the case yesterday and last night but a lot of smoke is over Tucson today from the Frye fire on Mount Graham (home to quite a few telescopes like the Large Binocular Telescope and VATT). Unfortunately Mount Graham is no stranger to fires over the past two decades. Though the temperatures are predicted to spike this week (highs of 116F are expected at my house), we are getting close to the rainy season and the weather models suggest some moisture will work into the area this week as well.

Obs Date(UT)     Time    TOT SPO ANT NSA NZC SSS PPS
SAL 2017-06-18  08h 16m   14  13  1   -   -   0   0
SAL 2017-06-17  08h 04m   8   5   1   -   0   0   2
SAL 2017-06-16  08h 20m   11  10  1   -   0   0   0
SAL 2017-06-15  08h 25m   19  16  1   1   0   1   0
SAL 2017-06-14  07h 35m   15  14  1   0   0   0   -
SAL 2017-06-13  08h 25m   23  19  3   1   0   0   -
SAL 2017-06-12  08h 01m   11  9   1   1   0   0   -

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 - Antihelions
NSA - Northern mu Sagittariids
NZC - Northern June Aquilids
SSS - Southern sigma Sagittariids
PPS - phi Piscids
Oth - other minor showers

June 1-11 Meteors

The summer monsoon rains aren’t expected to show up in Tucson till late this month or early July. Still, the monsoon moisture is not too far away and the beginning of June has seen its share of clouds. As a result, recent meteor detections have been rather low. Then again early June is a time of low meteor rates in general.

One thing to notice about the table below is the rapid increase in the number of active meteor showers. While all of these showers are of the very minor variety, the number of active showers will continue to increase. Since some of these showers while produce significant numbers of meteors, we should see the nightly rates start to inch upward by July.

Obs Date(UT)     Time    TOT SPO ANT NSC SOP JMC NSA ARI NZC SSS
SAL 2017-06-11  08h 26m   17  12  3   -   -   -   1   1   0   0
SAL 2017-06-10  08h 11m   8   7   0   -   -   -   0   0   1   0
SAL 2017-06-09  07h 58m   8   6   2   -   -   -   0   0   0   -
SAL 2017-06-08  05h 24m   8   8   0   -   -   -   0   0   -   -
SAL 2017-06-07  06h 24m   4   4   0   -   0   -   0   0   -   -
SAL 2017-06-06  08h 29m   7   5   2   -   0   -   0   0   -   -
SAL 2017-06-05  07h 53m   17  12  1   -   0   1   1   -   -   -
SAL 2017-06-04  08h 12m   15  13  1   -   0   0   1   -   -   -
SAL 2017-06-03  04h 39m   9   9   0   0   0   0   0   -   -   -
SAL 2017-06-02  08h 30m   20  18  0   0   1   0   1   -   -   -
SAL 2017-06-01  06h 20m   6   5   1   0   0   0   -   -   -   -

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
NSC - Northern omega Scorpiids
SOP - Southern May Ophiucids
JMC - June mu Cassiopeiids
NSA - Northern mu Sagittariids
ARI - Daytime Arietids
NZC - Northern June Aquilids
SSS - Southern sigma Sagittariids
Oth - other minor showers

May 30-31 Meteors

Presented here are results from the last two nights of May. While the very last night was almost completely clouded out (only a single sporadic meteor was detected), the second to last night saw 17 meteors detected. May is usually a slow month for meteors. A nightly tally of 17 may not seem like much but it is actually the highest number of meteors detected by one of cameras on May 30. The previous high was 13 which was recorded in 2011, 2014 and 2015.

Obs Date(UT)     Time    TOT SPO ANT NSC SOP JMC
SAL 2017-05-31  03h 10m   1   1   0   0   0   0
SAL 2017-05-30  07h 11m   17  13  0   2   2   0

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
NSC - Northern Omega Scorpiids
SOP - Southern May Ophiucids
JMC - June mu Cassiopeiids
Oth - other minor showers

May 22-29 Meteors

Meteor rates over Tucson dropped during the last week of May. This was partially due to slightly worse weather but may also be due to an actual decrease in meteor activity. Now that the Eta Aquariids are over, the second half of May and June are usually slow months meteor wise. The real celestial fireworks get going in July and August.

Obs Date(UT)     Time    TOT SPO ANT CCA NSC ETA SOP
SAL 2017-05-29  08h 16m   17  16  1   -   0   -   0
SAL 2017-05-28  08h 37m   16  12  2   -   0   0   2
SAL 2017-05-27  08h 38m   12  11  0   -   0   0   1
SAL 2017-05-26  07h 53m   12  10  2   -   -   0   0
SAL 2017-05-25  07h 32m   8   6   2   -   -   0   0
SAL 2017-05-24  08h 38m   10  9   0   -   -   0   1
SAL 2017-05-23  08h 43m   17  15  2   -   -   0   0
SAL 2017-05-22  08h 41m   14  10  1   1   -   1   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
CCA - Chi Capricornids
NSC - Northern Omega Scorpiids
ETA - Eta Aquariids
SOP - Southern May Ophiucids
Oth - other minor showers