Star Chart for Beamsville, ON
Star Chart courtesy:
Weather Underground
Astronomy Fact
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.
Sky Viewing Forecast
Forecasts courtesy of: ClearSky
| Sky Color Key (including Wind) |
Earth Satellite Vehicle 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 map-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
MadALwx.
Facts script courtesy of:
TNET Weather.
