Blog Image

AstroRockers Blog

About this blog

More about my astronomical observations and other hobbies:
Aurora - Meteors - Comets - Music

Four fireballs originating from the same location on the sky?

EN-98 Fireballs Posted on Sat, December 12, 2015 12:55:02

On December 8 (02:46:02 UT), December 9 (02:39:22 UT), December 11 (22:06:38 UT) and December 12 (03:25:41 UT) my all sky captured four fireballs. They seems the originate from one location at the sky. I made a composition of the three brightest fireballs. see picture below.

Picture 1. Composition made of three fireballs captured on December 8 (02:46:02 UT), December 9 (02:39:22 UT), December 11 (22:06:38 UT) and December 12 (03:25:41 UT). Click on the image for a better resolution.

The three fireballs are visible as tracks which are interrupted by the rotating sector. It therefore seems that the fireballs appear to originate from the same region of the sky (so called radiant). You can see this by extending the tracks backwards. The backward extended meteor tracks intersect in an area of the sky where the radiant of the December Monocerotids lies. So it is possible that these fireballs ar December Monocorotids!

Picture 2. Crop of previous image and the radiant of the December Monocerotids. Click on the image for a better resolution.

Several CAMS stations have also recorded these fireballs and the simultaneous calculations can hopefully then give a definitive answer about the origin of these fireballs.



2015-12-12 04:06:04 UT: bright meteor magnitude -3

EN-98 Fireballs Posted on Sat, December 12, 2015 12:22:50

During the night of December 11/12, 2015 my all sky camera captured three bright meteors, this is the third one.

Picture 1. Crop of an all sky image with the bright meteor of December 12, 2015 at 4:06:04 UT (timing CAMS Gronau, Carl Johannink).

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 12-12-2015
Period UT: 04:06:00-04:07:29
Time UT: 04:06:04 (timing CAMS Gronau).
Classification: xOr or MON?
Constellation: UMA/BOO
Brightness: -3
Simultaneously: CAMS Gronau



2015-12-12 03:25:41 UT: bright meteor magnitude -3

EN-98 Fireballs Posted on Sat, December 12, 2015 12:19:18

During the night of December 11/12, 2015 my all sky camera captured three bright meteors. This is the second one.

Picture 1. Crop of an all sky image with the bright meteor of December 12, 2015 at 03:25:41 UT (timing CAMS Gronau, Carl Johannink).

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 12-12-2015
Period UT: 03:25:30-03:26:59
Time UT: 03:25:41(timing CAMS Gronau).
Classification: xOr or MON?
Constellation: UMI -> DRA
Brightness: -3
Simultaneously: CAMS Gronau



2015-12-011 22:06:38 UT: bright fireball

EN-98 Fireballs Posted on Sat, December 12, 2015 12:12:48

A bright fireball was captured on December 11, 22:06:38 UT (timing all sky video Hengelo, Martin Breukers). I also seems to originate from the same location as the fireballs of December 8 and December 9.

Picture 1. Bright fireball in the evening of December 11, 2015. Click on the image for a larger version.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 11-12-2015
Period UT: 22:06:30-22:07:59
Time UT: 22:06:38 (timing all sky video Hengelo, Martin Breukers).
Classification: xOr or MON?
Constellation: AUR -> CAM
Brightness: -7
Simultaneously: EN-97, all sky video Hengelo



2015-12-09 02:39:22 UT: magnitude -5 fireball

EN-98 Fireballs Posted on Sat, December 12, 2015 12:05:18

Winthin 24 hours my all sky camera captured a second firebal, which seems to originate from the same location as the fireball of 8 december.

Picture 1. Bright fireball captured on December 9, 2015 at 02:39:22 UT (timing CAMS Oostkapelle (Klaas Jobse). Click on image for a better resolution.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 08-12-2015
Period UT: 02:39:00-02:40:29
Time UT: 02:39:22 (timing CAMS Oostkapelle).
Classification: xOr or MON?
Constellation: TAU
Brightness: -5
Simultaneously: EN-97, CAMS Oostkapelle (Klaas Jobse), CAMS Holtgensplaat (Piet Neels), VSB, Oostduinkerke (Geert Vandenbulcke), AstroLab IRIS, all-sky Alphen aan den Rijn.



2015-12-08 02:46:02 UT: magn. -4 fireball

EN-98 Fireballs Posted on Sat, December 12, 2015 11:54:12

A small fireball was captured with my all sky camera EN-98 on December 8, 2015 at 02:46:02 UT (timing CAMS Alphen aan den Rijn, Robert Haas).

Picture 1. The fireball, a possible xi Orionid of December Monocerotid? Click on the image for a larger version.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 08-12-2015
Period UT: 02:45:00-02:46:59
Time UT: 02:46:02 (timing CAMS Alphen aan den Rijn).
Classification: xOr or MON?
Constellation: AUR -> CAM
Brightness: -4
Simultaneously: EN-97, all sky Alphen aan den Rijn.