|Star Chart for Arendonk|
|Sun/Moon Data for Arendonk:|
DIY Sunspot Viewer
% illuminated - New Moon
New Moon: 25/04/2014 06:42
Full Moon: 25/04/2014 06:42
Graph courtesy: Newquay Weather
The sky is blue because when sunlight collides with our atmosphere, colors of the shortest wavelengths (violet and blue) are scattered - and our eyes are more sensitive to see blue.
Space Track-Satellite Passes
Notes about viewing ESVs:
When using lookangles, choose passes with high magnitudes; less than 6.0. ("Looks" are local time.)
Best viewing is when ESV is in Earth's penumbra; on the map, it's the solid line during night.
Dotted line on map denotes ESV is dark, in Earth's umbra (shadow).
Objects in orbit have to maintain a speed of at least 17,500mph, therefore ESVs traverse the sky noticeably different than aircraft.
ESVs appearing to blink are either tumbling rocket bodies, or spinning payloads with deployed solar arrays.
High-Eccentricity objects have a more ellongated orbit. Ground trace looks like a backwards C.
Regression-Ground traces will move West with each orbit due to Earth's rotation.
Script courtesy of: Lee from Page template and Facts script courtesy of:
Page Template and Moon script courtesy of: Graph base code courtesy of: jpGraph.