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

March 3-15 Meteors

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

Meteor Activity Outlook for March 15-21, 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: Gamma Normids (GNO) and Zeta Serpentids (ZSE).

Meteor Activity Outlook for March 8-14, 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: Northern March Virginids (NVI), Gamma Normids (GNO), IMO Shower #37 and the Xi Herculids (XHE).

February 25 – March 2 Meteors

Some actual inclement weather arrived in Tucson this weekend as 0.9″ of rain fell from Winter Storm Titan. For meteor watching this resulted in two missed nights. Even the nights prior to the storm saw varying amounts of cloudiness resulting in fairly low meteor counts.

Obs  Date(UT)      Time    TOT SPO ANT NDL DLE GNO
SAL  2014-03-02   00h 00m    *** Clouds/Rain ***
SAL  2014-03-01   00h 00m    *** Clouds/Rain *** 
SAL  2014-02-28   11h 22m   9   8   0   0   1   0
SAL  2014-02-27   11h 08m   13  10  0   1   1   1
SAL  2014-02-26   06h 30m   12  7   1   0   1   3
SAL  2014-02-25   10h 15m   6   6   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

Meteor Activity Outlook from March 1-7, 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: Gamma Normids (GNO), IMO Shower #35 and #37.

Meteor Activity Outlook for February 22-28, 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: Gamma Normids (GNO).

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