May 11-19 Meteors

The middle of May saw some nice meteor nights over Tucson. Even with the Eta Aquariids dropping off from their early May peak, enough Sporadic and minor shower activity is ongoing to keep nightly video rates at a dozen or more.

The last third of May may bring many more meteors than usual as the Camelopardalids, a usually very minor shower, may experience an outburst on the night of May 23/24. More on this shower in the next few days.

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Obs  Date(UT)      Time    TOT SPO ANT ETA XLI ELY SOP CCA
SAL  2014-05-19   08h 49m   13  9   0   2   -   -   1   1
SAL  2014-05-18   08h 51m   10  7   1   0   -   -   1   1
SAL  2014-05-17   07h 18m   7   5   0   1   -   -   0   1
SAL  2014-05-16   08h 51m   20  15  3   2   -   -   0   0
SAL  2014-05-15   08h 55m   16  14  1   1   -   -   0   -
SAL  2014-05-14   08h 43m   13  11  0   2   -   -   0   -
SAL  2014-05-13   08h 59m   11  9   1   1   -   -   1   -
SAL  2014-05-12   08h 58m   14  7   0   4   -   2   1   -
SAL  2014-05-11   08h 47m   18  11  0   7   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 - Antihelions
ETA - Eta Aquariids
XLI - April Chi Librids
ELY - Eta Lyrids
SOP - Southern May Ophiuchids
CCA - Chi Capricornids

Late April Meteors

April 22 marked the peak of the Lyrid meteor shower. The Lyrids are considered a major shower though, in reality, they are the weakest of the major showers. You might even be able to call them the strongest minor shower.

The Lyrids were produced by comet C/1861 G1 (Thatcher), a comet seen only in 1861. It is a high inclination (~80º) long-period comet with a period of ~400 years. The shower is also prone to outbursts though none was predicted for or reported this year. On the April 22 UT, a total of 21 Lyrids were observed. The star chart below shows the radiant of the Lyrids halfway between Lyra and the keystone of Hercules.

2014Apr22_Lyrids

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Obs  Date(UT)      Time    TOT SPO ANT SLE PPU LYR ETA
SAL  2014-04-30   09h 13m   16  12  1   -   -   -   3
SAL  2014-04-29   09h 23m   13  11  2   -   -   -   0
SAL  2014-04-28   09h 09m   12  10  1   -   0   -   1
SAL  2014-04-27   09h 01m   16  13  2   -   0   -   1
SAL  2014-04-26   08h 03m   6   4   0   2   0   -   0
SAL  2014-04-25   09h 07m   12  10  2   0   0   0   0
SAL  2014-04-24   08h 15m   11  8   1   0   0   2   0
SAL  2014-04-23   07h 39m   15  8   1   2   0   4   0
SAL  2014-04-22   09h 08m   30  8   1   0   0   21  0
SAL  2014-04-21   09h 12m   14  9   1   1   0   3   0
SAL  2014-04-20   07h 54m   15  13  0   1   0   1   0
SAL  2014-04-19   06h 19m   5   4   0   0   0   1   0
SAL  2014-04-18   00h 00m    "Clouds All Night"
SAL  2014-04-17   08h 23m   11  7   2   1   0   1   -
SAL  2014-04-16   09h 49m   17  13  3   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 - AntihelionsZSE - Zeta Serpentids
SLE - Sigma Leonids
PPU - Pi Puppids
LYR - Lyrids
ETA - Eta Aquariids

Early April Meteors

It has been awhile since I last posted. Even though I’ve been quiet, my meteor camera has been running almost every night (though I did forget to turn it on one night :) ).

Early April continues a period of no active major showers. The period does contain many active minor showers. Though most produce little activity, the Sigma Leonids (SLE) showed a consistent level of low activity through out early and late April. The SLEs are on a low inclination Jupiter-family comet or near-Earth asteroid orbit.

My next post will present the meteors from late April when we’ll see some activity from a major shower.

Obs  Date(UT)      Time    TOT SPO ANT ZSE ZCY LVI DAL SLE PPU
SAL  2014-04-15   09h 37m   9   9   0   -   -   -   0   0   0
SAL  2014-04-14   09h 44m   14  11  2   -   -   -   0   1   -
SAL  2014-04-13   09h 21m   10  7   0   -   -   0   0   3   -
SAL  2014-04-12   00h 42m   1   1   0   -   -   0   0   0   -
SAL  2014-04-11   03h 29m   2   2   0   -   0   0   0   0   -
SAL  2014-04-10   09h 37m   8   5   2   -   0   0   1   0   -
SAL  2014-04-09   09h 27m   11  8   1   -   0   0   0   2   -
SAL  2014-04-08   09h 02m   11  9   0   -   0   1   0   1   -
SAL  2014-04-07   09h 46m   16  16  0   -   0   0   0   -   -
SAL  2014-04-06   09h 44m   13  9   3   -   1   0   0   -   -
SAL  2014-04-05   10h 02m   7   5   1   -   1   0   -   -   -
SAL  2014-04-04   09h 55m   10  5   3   -   0   2   -   -   -
SAL  2014-04-03   09h 33m   11  10  1   0   0   -   -   -   -
SAL  2014-04-02   09h 29m   14  14  0   0   0   -   -   -   -
SAL  2014-04-01   00h 00m       "FORGOT to TURN on CAMERA"

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 - AntihelionsZSE - Zeta Serpentids
ZCY - Zeta Cygnids
LVI - Lambda Virginids
DAL - Delta Aquiliids
SLE - Sigma Leonids
PPU - Pi Puppids

Meteor Shower Activity for May 10-16, 2014

The Meteor Activity Outlook for the period 2014 February 15-21 has been posted by Bob Lunsford on the American Meteor Society website.

The Outlook has details on meteors from the Antihelion region and the following showers: Eta Aquariids (ETA), Eta Lyrids (ELY) and Theta 2 Sagittariids (TTS).

March 16-31 Meteors

March continues the “doldrum” season of meteor observing. With no major showers active and sporadic activity at a minimum, this time of the year sees the lowest meteor rates. April is also a bit dull though one major shower, the Lyrids, will spice things up for a few nights.

The second half of March did minor but consistent activity from two showers, the Eta Virginids (EVI) (discussed in a previous post) and the Zeta Serpentids (ZSE). The ZSE were produced by an unknown retrograde long-period comet with a perihelion near 0.99 AU from the Sun and inclination of 150º.

Obs  Date(UT)      Time    TOT SPO ANT GNO EVI XHE NVI ZSE
SAL  2014-03-31   10h 22m   15  11  2   -   0   -   -   2
SAL  2014-03-30   10h 00m   9   8   1   -   0   -   -   0
SAL  2014-03-29   10h 11m   17  16  0   -   1   -   -   0
SAL  2014-03-28   09h 51m   15  12  1   -   0   -   -   2
SAL  2014-03-27   09h 28m   6   5   1   -   0   -   -   0
SAL  2014-03-26   10h 31m   12  7   2   -   1   -   -   2
SAL  2014-03-25   09h 19m   19  16  1   -   0   -   -   2
SAL  2014-03-24   09h 51m   5   4   0   -   0   -   -   1
SAL  2014-03-23   10h 30m   21  14  4   -   1   -   -   2
SAL  2014-03-22   10h 40m   12  10  0   0   0   -   1   1
SAL  2014-03-21   08h 58m   7   5   1   0   0   -   1   0
SAL  2014-03-20   10h 30m   15  10  2   0   2   -   1   0
SAL  2014-03-19   10h 46m   6   4   2   0   0   -   0   0
SAL  2014-03-18   10h 48m   8   4   3   0   1   -   0   -
SAL  2014-03-17   10h 50m   6   5   0   0   1   0   0   -
SAL  2014-03-16   10h 52m   21  14  5   0   2   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
GNO - Gamma Normids
EVI - Eta Virginids
XHE - x Herculids
NVI - Northern March Virginids
ZSE - Zeta Serpentids

Jan 10/11/12 Meteors

The most active minor meteor shower during the nights of Jan 10/11 and 11/12 was the December Leo Minorids (DLM). The DLM is one of many showers that seem to be active this time of the year in Leo, Leo Minor and nearby constellations. There is even some debate as to whether the DLM is a real shower or just a part of a continuum of showers.

Obs  Date(UT)      Time    TOT SPO ANT COM DLM NCC XCB
SAL  2014-01-11   12h 34m   25  19  3   0   3   0   0
SAL  2014-01-12   12h 33m   27  19  3   1   3   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
COM - Coma Berenicids
DLM - December Leonis Minorids
NCC - Northern Delta Cancrids
XCB - Xi Corona Borealids

Jan 5/6 Meteors

Now that’s more like it. After two straight nights with cirrus, a clear night once again produced a larger number of detections. (And yes I know I shouldn’t complain about a few nights of cirrus when much of the US and Canada is undergoing a deep freeze).

The short window to see Quadrantids has already closed and this shower is done for the year. Still the other minor showers and Sporadics produced 30 detections.

Obs  Date(UT)      Time    TOT SPO ANT AHY COM DLM JLE
SAL  2014-01-06   12h 38m   30  26  1   2   1   1   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
AHY - Alpha Hydrids
COM - Coma Berenicids
DLM - December Leonis Minorids
JLE - January Leonids
QUA - Quadrantids
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