The start of the month saw quite a bit of clouds and some well needed rain. As a result, the first four nights of the month saw very few meteors sighted over Tucson. Since then the weather has been clearer and nightly totals have ranged between 7 and 21 meteors with 11-14 being the average for a clear night.
The period saw the end of the Northern Delta Leonids (NDL) and Delta Leonids (DLE). Neither shower produced much this year with only 5 NDL and 7 DLE meteors detected in total.
A few minor showers have started up since the start of the month. The Gamma Normids (GNO) have been known for decades and are the product of an unknown comet on a retrograde inclination orbit (~120-145°) and perihelion that is interior to Earth’s orbit. With a radiant deep in the southern sky, this shower is poorly observed from Tucson. Still 10 GNO have been seen with my set-up since late February.
The Eta Virginids (EVI) is another shower that has been known for awhile. These meteors are slow (29 km/s) and come from a very low-inclination (3°), small perihelion (0.3-0.4 AU) near-Earth asteroid or short-period comet orbit. Only 3 EVIs have been detected so far. Another meteor shower from Virgo, the Northern March Virginids (NVI) just became active on the night of the 15th. Like the EVIs, the NVIs are also from a low-inclination (3-4°), small perihelion (0.5-0.7 AU) near-Earth asteroid or short-period comet orbit.
Two additional minor showers are radiating from Hercules. Both the f Herculids (FHE) and x Herculids (XHE) were found as part of the IMO Meteor Video Network (the same network that this shower is a part of) a few years ago. Each shower produces relatively slow meteors (36-44 km/s). So far, only a single meteor from each shower has been detected.
Obs Date(UT) Time TOT SPO ANT NDL DLE GNO EVI FHE XHE NVI SAL 2014-03-15 10h 10m 21 19 0 - - 1 0 - 1 0 SAL 2014-03-14 10h 08m 18 13 4 - - 0 1 0 0 - SAL 2014-03-13 09h 11m 10 7 2 - - 1 0 0 0 - SAL 2014-03-12 07h 47m 11 10 1 - - 0 0 0 0 - SAL 2014-03-11 08h 56m 12 8 2 - 0 2 0 0 0 - SAL 2014-03-10 11h 04m 11 11 0 - 0 0 0 0 0 - SAL 2014-03-09 11h 05m 14 12 0 - 1 0 1 0 - - SAL 2014-03-08 11h 08m 11 8 1 - 0 2 0 0 - - SAL 2014-03-07 10h 20m 20 19 1 - 0 0 0 0 - - SAL 2014-03-06 08h 47m 7 5 0 - 0 0 1 1 - - SAL 2014-03-05 11h 13m 14 12 1 - 0 0 0 0 - - SAL 2014-03-04 08h 38m 2 2 0 0 0 0 0 - - - SAL 2014-03-03 05h 01m 1 1 0 0 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 NDL - North Delta Leonids DLE - Delta Leonids GNO - Gamma Normids EVI - Eta Virginids FHE - f Herculids XHE - x Herculids NVI - Northern March Virginids
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