Showing posts with label TOPOL. Show all posts
Showing posts with label TOPOL. Show all posts

Saturday, 13 April 2024

Russian ICBM test launch (Topol?) from Kapustin Yar seen from the Middle East

click to enlarge

On 12 April 2024 near 16:00 UTC, the Russian Armed Forces test-fired an unarmed ICBM from Kapustin Yar, targetting the test range at Sary Shagan at a distance of some 2000 km. The missile was likely a TOPOL-M.

In the image above, I have modelled the likely trajectory, assuming apogee at 1000 km altitude as in previous tests. Below is Russian MoD footage of the launch:

 


The missile launch was widely seen as a bright comet-like object in the sky, in Russia as well as in the Middle East, with reports from as far south as a.o. Iran and Iraq. As many there where in anxiety about an expected Iranian retaliation attack on Israel, it created  a bit of a stir.



 

In the aftermath, there were some people that expressed doubt whether a Russian ICBM test would be visible from the Middle East. So I reconstructed the area of visibility to show that it is in fact visible. 

In the map below, I have drawn isocircles around the estimated point of cut-off of the missile's third stage. That stage cut-off happened after 3 minutes of flight at an altitude of about 570 km (there is some leeway in both figures possible, but in general the figure below will give you a good indication of the area of visibility).

click map to enlarge

 

The isocircles give you the altitude in the local sky as seen from a region encompassing southern Russia and the Middle East. 

As can be seen, the area of visibility is large, and horizontally extends about 2600 km from the geographic location of stage engine cut-off, to as far as southern Iran. 

Bar the first few tens of kilometers, the trajectory was fully sun-illuminated, and as a result the exhaust clouds of the missile were also sun-illuminated, making them  shine brightly in the sky.

That exhaust clouds from the upper stages of missile launches can be seen over a avery large area isn't something new. Russian ICBM tests from Plesetsk have multiple times resulted in sightings of bright "spirals" in the Arctic sky (e.g. here). Chinese tests have also been observed, e.g. this example that was observed from South Korea in 2019, which I further analysed here. Meanwhile, the post-boost vehicles of ICBM's/SLBM's sometimes also cause visible phenomena in the sky: see my analysis of one such sighting from La Palma in 2013 related to a US Trident SLBM test for example.

Thursday, 28 December 2017

Effects of December 26 Russian TOPOL RS-12M ICBM test also seen from the Netherlands

Image (c) Bussloo Public Observatory/Mark-Jaap ten Hove
click to enlarge
On 26 December 2017, Russia's Strategic Missile Force conducted a flight test with a TOPOL RS-12M ICBM from Kapustin-Yar in Astrakhan. The test was "aimed at testing perspective armament for intercontinental ballistic missiles".

The test resulted in a sky phenomena that was photographed from East and Central Europe, and, as it turns out, even NW Europe. A luminous bubble-cloud like phenomena appeared in the eastern sky as seen from Europe. There is some incredible imagery from Austria, as well as other locations.

I sent out an alert to the operators of the Dutch photographic all-sky meteor camera network to see if perhaps they captured something. Most stations were clouded out, but the station at the Bussloo Public Observatory in the east of the Netherlands did capture the event, amidst clouds!

Above is a part of the all-sky image: the phenomena is the ghostly neon-blue glow due east, behind the clouds. Below it a part of the same image in more detail:

Image (c) Bussloo Public Observatory/Mark-Jaap ten Hove
click to enlarge
Bussloo is at 6.12 E, 52.20 N. It is 2800 km distant from Kapustin-Yar, which is at 82 degrees azimuth as seen from Bussloo, so almost due East.

The cloud is exhaust from the missile at (very) high altitude in space, illuminated by the sun.

In the image, taken at 03:44 UT (December 26), the top of the blue cloud is at an altitude of ~30 degrees (stars from Corona borealis are visible in the blue cloud: the bright star somewhat right of the center in the second image is Arcturus).

Assuming the cloud is right above Kapustin-Yar, this would place the top of the cloud at an altitude of ~3300 km. If it is closer in range (e.g. when expanding and/or drifting westwards), it is lower.


(I thank Bussloo Public Observatory (Mark-Jaap ten Hove) for their kind permission to publish their photographs and all the Dutch all-sky meteor camera operators for checking their imagery)