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Hull and East Riding

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Extra Information From Ray Taylor

Update: Following Ray Taylor’s talk on analysing meteor showers in December 2016, he has kindly sent us images showing 2016 data and a summary for early 2017…

RMAP_Rg streams ID - shows radiants with IDs of major streams

 


Summary: Meteors in January 2017 by Ray Taylor and his colleagues at Nemetode.org

OMAP streams - shows a solar system orbit plot of major streams. Note how the Earth (its orbit is marked by the blue dot)  is bombarded by interplanetary material throughout the year. The plot would be very cluttered if we added all data

Early Jan 2017                  (Skirlaugh)        

NE

NW

   Comments

a Hydrids

2

0


December Comae Berenicids

6

2


December alpha Draconids

15

10

Peaked 3rd Jan, All done by 6th

Geminids

3

1

First few days of month

Hydrids

2

3


Quadrantids

54

33

Peaked 3rd/4th Jan

sTaurids

3

0

First few days of month

Ursids

5

2

All done by end of first week

xi Ursae Majorids

2

0


Sporadics  

59

28


December 2018: Subject - December Alpha Draconids


From my North East camera at 2202.46UTC 19th of November.

Initial analysis suggests an early December Alpha Draconid with an Apparent Magnitude of -4.2; checking around Nemetode.org - this appears to be the first this year!

This particular Weak Meteor Shower usually starts around now and appears to have two peaks, the second taking place during the time of the Quadrantids in the first week of the New Year.

BUT! This may be an anomaly because the Radiant positions of both meteor showers are relatively close together so there may be mis-allocation by the analytical software.

Clear Skies       Ray

A first look at this year's Orionids

 “Thought you and HERAS members would be interested in this ‘early look’ at the 2018 data set for the Orionids.

Huge thanks to Alex Pratt for getting the data out so quickly.

Clear Skies       Ray

Many of us [Ed: members of Nematode] recorded good numbers of Orionid meteors during the past few weeks, the debris from comet 1P/Halley.

I've attached the ground map from 180 multi-station Orionids captured between September 24 and November 4. The trail map for the same interval shows how their radiant traverses from R to L above Orion. moving 0.7 degrees per day in RA and 0 degrees per day in Dec.

Unlike some showers that have a brief peak of activity, the Orionids can put on a good display for 2 or 3 nights. The second radiant plot is for the night of October 21/22, from 48 multi-station meteors. These give a radiant point of RA 95.4 (6h 22m) and Dec 15.4, at solar longitude 208.4 degrees. Their average geocentric velocity (Vg) was 65.7 km/s. As usual, our results agree very well with those of professional workers listed in the IAU MDC.

3 images below…

Nice data everyone!

Clear skies,    Alex.

Februaty 2019:

 An interesting Meteor capture, because it was classed as a “theta Centaurid”.

Captured by my North East pointing camera.

This is a Weak shower taking place late January to late March, however it is regarded as a “southern hemisphere event”.


 The image has been rotated to show the true horizon, bottom of image.

The direction of travel is Right to Left; the “curvature” is an artefact of the camera lens – wide angle. The two “bright” areas towards the Left end indicate “Fragmentations” took place.

The Apparent Magnitude is -3; reference “The Plough” at the “top” of the photograph.

An Interesting Speculation! July 2019


















During Wednesday 24th and Thursday 25th July 2019 there was a “Near Miss” by an Asteroid, “Asteroid 2019OK”; it passed between the orbits of Earth and our Moon at a distance of 43,500 miles from Earth.


Often asteroids have an associated debris field which can give rise to “Meteor Showers” eg the Quadrantids. These Debris fields sometimes contain relatively large pieces of material and give rise to “Fireballs”.


Is it a pure coincidence that the two Fireballs, shown above, occurred at 20190724_00135UTC and 20190724_231649UTC respectively?


Both have the same Orbital characteristic, very similar Velocity and Radiant characteristic (as can be seen from the images) they appear to be coming from the same direction albeit 23hours apart.


Both have Apparent Magnitude of > -6.1 and were classified as “Sporadics”, meaning they are not from a known Meteor Shower.


Both show intermediate “Flashes” during “ablation”, indicating “Fragmentation” was taking place.


When subjected to Analysis, both appear to have an initial Mass of between 35 and 100g, with a size somewhere between 20 and 50mm, depending upon which Assessment System is used.


An “Interesting Speculation” indeed.


Ray Taylor





 SPRITES -Transient Luminous Events

Rarely seen, let alone photographed, these events take place in the upper atmosphere above thunderstorms.

On July 25th 2019 at 214733UTC one of my cameras (Skirlaugh SE) captured an event and Jim Rowe's camera at East Bartnet (N London) captured the same event.

Images below and the first one is on Ray’s gallery page

These displays are typically Red in colour, however our cameras are mono-chrome so only get a Black & White image!

We both have video of the event which has been sent to our website and should be "active" in a few days.

Clear Skies

Ray

Recorded by my Nemetode.org camera, Skirlaugh SE.

Time: 20190725_214733.8UTC (image by Ray Taylor)











And, below the same again by Jim Rowe, East Barnet

Time: 20190725_214733.7UTC