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 Meteor Showers |
 Tonight's Sky |
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Your Sky planets and constellations on Tue, 21-Mar-2023 06:41pm CDT
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| Sun/Moon Data for Lincoln NE: | |||
Sunspot Activity
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Sunset: 7:38 PM Sunrise: 7:28 AM DIY Sunspot Viewer |
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0% illuminated - New Moon Moonrise: 7:41 AM (21-Mar-2023) New Moon: Wed, 19-Apr-2023 11:13pm CDT Full Moon: Wed, 05-Apr-2023 11:35pm CDT |
 Graph courtesy: Newquay Weather |
Space Wx |
Astronomy Fact
Only one side of the Moon ever faces Earth. The Moon's period of rotation is exactly the same as it's period of orbit.
| Color Key |
| Worse | Better | Best | Sky (including Wind) | ||||||||||
| Worse | Best | Worse | Ground |
Space Track-Satellite Passes
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.
Page template and Facts script courtesy of: TNET Weather on Weather-Watch.
Page Template and Moon script courtesy of: Saratoga Weather.
Graph base code courtesy of: jpGraph.
