lyrids

April Meteors

A total of 1571 meteors were detected in April, using the reflected radar signal from Graves.

The daily average was 52 with a maximum of 121 on 23rd April. The hourly average was 2 with a max of 13 between10:00 -11:00 on 23rd.

The months activity started off quieter than last year, although the peak activity was higher, the Lyrids peak on the 22nd April, although both years show a peak on the 23rd, this is probably a combination of the Lyrids and Pi puppids (18 -25 april, peak 23rd). The non directionality of the detector makes it difficult to ascribe any count to a particular shower.

The increase in activity at end of month heralds the approach of the Eta Aquarids which peak on 6th May, with the moon only a few days old.

April Meteors

The main shower in April is the Lyrids, but as the table below shows there are other showers present as well.

Major Activity:

Radiant Duration Maximum
Lyrids (LYR) April 16-25 Apr. 22

Minor Activity:

Radiant Duration Maximum
Tau Draconids March 13-April 17 Mar. 31-Apr. 2
Librids March 11-May 5 Apr. 17/18
Delta Pavonids March 21-April 8 Apr. 5/6
Pi Puppids (PPU) April 18-25 Apr. 23/24
April Ursids March 18-May 9 Apr. 19/20
Alpha Virginids March 10-May 6 Apr. 7-18
April Virginids April 1-16 Apr. 7/8
Gamma Virginids April 5-21 Apr. 14/15

Daylight Activity:

Radiant Duration Maximum
April Piscids April 8-29 Apr. 20/21

The total meteor activity detected for April was 1790.

The average daily rate was 60 and the average hourly rate 2.5

The max hrly rate was 11  during the hours of 9 & 11 on 30th April

The max dly rate was 93 on 23rd April with hourly counts of 10 during the hours of 4, 9 & 11.

Maximum activity for the Lyrids occurred during daylight as did a lot of this months activity.

The daily rate graph and hourly rate graph are listed below, the Lyrid max is marked on both, the daily rate for 2017 is also included for comparison, it would appear more meteors were detected this year. The month of May brings the Eta Aquarids over the weekend of the 5th/6th, which will be competing with a bright waning Gibbous moon.

Pete H

 

Meteor detection over April & May 2017

April: the Lyrids towards end of month were just noticeable, with varying activity from minor showers overlapping over the month.


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Major Activity:

Radiant Duration Maximum
Lyrids (LYR) April 16-25 Apr. 22

Minor Activity

Radiant Duration Maximum
Tau Draconids March 13-April 17 Mar. 31-Apr. 2
Librids March 11-May 5 Apr. 17/18
Delta Pavonids March 21-April 8 Apr. 5/6
Pi Puppids (PPU) April 18-25 Apr. 23/24
April Ursids March 18-May 9 Apr. 19/20
Alpha Virginids March 10-May 6 Apr. 7-18
April Virginids April 1-16 Apr. 7/8
Gamma Virginids April 5-21 Apr. 14/15

Daylight Activity

Radiant Duration Maximum
April Piscids April 8-29 Apr. 20/21

 

 

May started with a continuation of the lower activity detected at end of April, before the marked increase due to the Eta Aquarids, there was a noticeable increase in activity over the rest of the month with activity from minor showers overlapping and the activity of the day time showers showing up prominently on the hourly recording, greater activity before midday on most days.


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Major Activity:

Radiant Duration Maximum
Eta Aquarids (ETA) April 21-May 12 May 5/6

 

Minor Activity

Radiant Duration Maximum
Epsilon Aquilids May 4-27 May17/18
May Librids May 1-9 May 6/7
Eta Lyrids May 3-12 May 8-10
Northern May Ophiuchids April 8-June 16 May 18/19
Southern May Ophiuchids April 21-June 4 May 13-18

 

Daylight Activity

Radiant Duration Maximum
Epsilon Arietids April 25-May 27 May 9/10
May Arietids May 4-June 6 May 16/17
Omicron Cetids May 7-June 9 May 14-25
May Piscids May 4-27 May 12/13

It will be interesting to see if any of the radar detections can be matched visually once I’ve got the all sky camera up and running, I will be running Dimension4 to synchronise times on both machines, enabling a match to be made to visual and radar sightings.

Look out for the June Lyrids 15-16 June, although just after full moon and the nights will be a lot shorter.