Star Chart for Northeast WI

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Sun/Moon Data for Northeast WI:
Sunspot Activity	Sunset: 8:06pm Sunrise: 5:30am DIY Sunspot Viewer		16% illuminated - Waning Crescent Moon Moonrise: 4:16am (07-May-2021) New Moon: Tue, 11-May-2021 2:01pm CDT Full Moon: Mon, 26-Apr-2021 10:32pm CDT

Graph courtesy: Newquay Weather

Space Wx

Stellar Neighbors

Click on any star for more details. Hyperphysics

Space Track-Satellite Passes

ISS HST R/B-Russian R/B-Chinese Weather-Russian Sientific-USA Spy-Russian Spy-Russian Spy-Russian International Space Station View Look Angles USA, Hubble Space Telescope View Look Angles SL-16 Rocket Body - Spy Satellite View Look Angles Long March Rocket Body (high-E) View Look Angles OKEAN, Weather Satellite View Look Angles UARS, Scientific Satellite View Look Angles COSMOS 1674, ELINT Spy Satellite View Look Angles COSMOS 1220, EORSAT Spy Satellite View Look Angles COSMOS 2058, ELINT Spy Satellite View Look Angles

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.