|Star Chart for Phoenix, AZ|
|Sun/Moon Data for Phoenix, AZ:|
DIY Sunspot Viewer
57% illuminated - Waxing Gibbous Moon
Moonrise: 14:29 (03 Sep 2014)
New Moon: Tue 23 Sep 2014 2314 MST
Full Moon: Mon 08 Sep 2014 1839 MST
Graph courtesy: Newquay Weather
Even though Mercury is the closest planet to the Sun, temperatures can reach -280 F. Why? Since Mercury has almost no atmosphere, there is nothing to trap heat near the surface. So, the dark side of Mercury (the side facing away from the Sun) is very cold.
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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.