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How many satellites on average within half an hour would be visible from one point?
It would depend on the time. We can't see satellites in the daytime, because the sky is so bright that it washes out the view of small satellites. (The early "Echo" balloon satellites were a short-lived exception. Enormous mylar balloons, inflated in orbit, acted as passive reflectors of radio signals AND sunlight; if you knew where to look, they were possible to see in the daytime.)
In the middle of the night, the satellites that you might hope to see are in the Earth's shadow themselves, and cannot be seen. The Iridium "satellite phone" satellites orbit in pretty high orbits, however, and are often in the sunlight. And when the solar power panels are oriented "just right", it's possible to see an "Iridium flare" for just a few seconds; again, if you know just where and when to look!
But most low-Earth-orbit satellites, such as the International Space Station, are visible for only about an hour after sunset or for an hour before dawn.
So, "on average", none. Sometimes several.
What else can I help you with?
There are currently broadcasting GPS satellites?
Yes, there are currently multiple GPS satellites in orbit that provide positioning, navigation, and timing services globally. The Global Positioning System (GPS) is maintained by the United States and typically consists of around 30 operational satellites, ensuring that at least four satellites are visible from any point on Earth at any time. These satellites transmit signals that allow GPS receivers to calculate precise locations. The system is continuously being updated and improved to enhance accuracy and reliability.
When are satellites passing overhead visible in a dark clear sky?
When you are having a clear sky with stars to be seen, fat chance you can spot a Sattelite between them. not all sattelites "pass overhead" tough, many are fixed around 1 point in relation to the earth. They are in most cases to be reconised by a slight but relatively quick flickering. They are often less bright in the centre.
Why the Sun emits most of its energy in the form of visible light?
It doesn't. Visible light is only a tiny part of the energy spectrum of the sun's emissions. However the peak point of this very wide distribution occurs in the visible part of the spectrum, which is a consequence of the process of "natural selection" in the development of eyes in living creatures. The peak intensity point is itself determined by the temperature of the surface of the sun. If the sun had been a bit cooler, the peak point would have been in the infra red, and our eyes would be sensitive to that, with curious results.
Look at the metric ruler pictured Assuming that 0 is visible on the measure and is also the starting pointwhat is the distance to point D?
Look at the metric ruler pictured. Assuming that 0 is visible on the measure and is also the starting point, what is the distance to point D?
How do global positioning systems use elevation point on earth system to find latitude and longitude?
GPS receivers do not 'use' elevation for anything. They use the signals from several satellites simultaneously to calculate the latitude, longitude, and elevation of the receiver's location. It takes a minimum of three satellites to calculate the latitude and longitude, a minimum of four satellites to calculate the latitude, longitude, and elevation, if more satellites can be found the latitude, longitude, and elevation calculations can be refined more accurately.
What is the minimum of operational navstar satellites?
The minimum number of operational NAVSTAR satellites required for global positioning coverage is typically considered to be 24. This number allows for at least four satellites to be visible from any point on Earth, enabling accurate triangulation and positioning. However, to enhance reliability and accuracy, the system often operates with more than 30 satellites in orbit.
There are currently broadcasting GPS satellites?
Yes, there are currently multiple GPS satellites in orbit that provide positioning, navigation, and timing services globally. The Global Positioning System (GPS) is maintained by the United States and typically consists of around 30 operational satellites, ensuring that at least four satellites are visible from any point on Earth at any time. These satellites transmit signals that allow GPS receivers to calculate precise locations. The system is continuously being updated and improved to enhance accuracy and reliability.
When on the Equator and looking at Polaris the star is positioned?
Within about 1/3 degree of the point on your horizon due north of you. Most likely not visible to you.
Does satellite glow at night?
No, satellites do not glow at night. They reflect light from the Sun, which is why they are visible at night as they pass overhead. The sunlight reflecting off the satellite makes it appear as a moving point of light against the dark sky.
How do I use the word visible in a sentence?
The package is not visible from my current vantage point.
When are satellites passing overhead visible in a dark clear sky?
When you are having a clear sky with stars to be seen, fat chance you can spot a Sattelite between them. not all sattelites "pass overhead" tough, many are fixed around 1 point in relation to the earth. They are in most cases to be reconised by a slight but relatively quick flickering. They are often less bright in the centre.
What is an example of average velocity of zero?
An example of average velocity of zero is when an object moves in a full circle and returns to its starting point within a given time interval. Since the displacement is zero (starting and ending at the same point), the average velocity is also zero.
Do satellites produce light?
planets don't produce their own light. They just reflect light
What term is given to satellites that remain above the same point on the Earth's surface in their orbit?
There are two types of satellites that are located in a foxed spot over earth the first is reconnaissance satellites for observation of earth and usually used by the military.. The second is earth observation satellites and are intended for environmental monitoring
How many satellites are needed to provide a place on earth?
If the question is regarding finding the latidude and longitude of one point on the earth, the answer is a minimum of three satellites. The method used is called triangulation. If you wish to know the altitude of the point, a minimum of four satellites are needed.
What satellites orbiting earth that receive radiotelevisionand telephone signals and then transmit them around the world?
The satellites that orbit Earth and facilitate the transmission of radio, television, and telephone signals are known as communication satellites. These include geostationary satellites, which remain fixed over a specific point on the Earth's surface, such as the Intelsat and SES satellites. They receive signals from ground stations, amplify them, and then retransmit them back to different locations on Earth, enabling global communication. Examples of specific satellites include the Astra and DirecTV satellites.
Is the big dipper visible over Portugal?
Yes, all constellations are visible at one point through out the seasons.
