SkyNew

Fireball

One huge bright fireball crossing the sky with a glowing trail that fades, flaring and breaking into fragments.

Parameters

Name	Type	Default	Range	What it does
startAz	number	120	0 to 360 deg	compass direction where the fireball first appears
startAlt	number	55	0 to 90 deg	height above the horizon where it first appears
endAz	number	240	0 to 360 deg	compass direction where it burns out
endAlt	number	15	0 to 90 deg	height above the horizon where it burns out
start	number	5	0 to 3600 s	film second at which the fireball appears
duration	number	4	0.5 to 30 s	how long it takes to cross its path
magnitude (Can change over time)	number	-14	-26 to -2	apparent magnitude of the head: -4 Venus, -12.7 full Moon, -20 plain in daylightCan change over time
trailTime	number	3	0.3 to 20 s	how long the glowing trail takes to fade where it was left
fragments	integer	4	0 to 8	how many pieces it breaks into at the break-up; 0 for none
fragmentAt	number	0.6	0.1 to 0.9	how far along its path it flares and breaks up, from 0 to 1
spread	number	8	1 to 30 deg	how widely the fragments fan out from the path
coreSize	number	0.15	0.02 to 2 deg	radius of the bright core of the head
glow	number	1.2	0.05 to 10 deg	radius of the glare round the head
width	number	0.12	0.02 to 1 deg	width of the trail near the head; it widens as it ages
flicker	number	0.4	0 to 1	how much the head's brightness flickers
headColour	color	#fff3dc	–	colour of the hot head
trailColour	color	#ffb066	–	colour of the cooling trail
seed	integer	4	0 to 999	changes the fragments' paths and the flicker

film.js

elements: { 'fireball-bolide': { startAz: 120, startAlt: 55 } }

Ask your agent to put it in a film. It finds the element by name.