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Questions tagged [ground-track]

Questions regarding the path of a point directly below an object in space.

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Why do GTO launches from Baikonur launch to the northeast? [duplicate]

According to this article from Discover magazine, the flight paths of most rockets launching out of Baikonur pass over the Altai region of Russia (this has the side effect of large quantities of spent ...
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Rocket launch ground track mapper

I'm looking for a tool for plotting the ground tracks of rocket launches at particular inclinations from particular launch sites, but haven't found anything so far; can anyone help me with this?
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2answers
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Is it possible to plot the ground track of a satellite with just azimuth & elevation angles without range?

I came across this question on StackOverflow about Satellite Trajectory plot. In the code mentioned in the question, the user takes only the Azimuth & Elevation angles (radians) & converts ...
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1answer
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How do I determine the ground-track period of a LEO satellite?

I was analyzing a LEO satellite with polar orbit for work purposes. I am relatively new to the field of Satellite orbits. I know that TLE can give information about the current & future orbits ...
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1answer
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What does the ISS ground track look like during periods of high solar beta?

These tweets about how sometimes the sun doesn't set on the International Space Station for multiple days made me realize I still have trouble visualizing solar beta angles. Does anyone have a ...
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1answer
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What kind of orbit makes this wave shaped ground track?

Here is a screen shot from NY2O of the ground track from GSAT-6A (43241, 2018-027A). What kind of orbit can make this wave shaped ground track?
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2answers
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How are impact probability maps rigorously calculated?

This is one example of an impact probability map. It was posted in this question and is from Aerospace Corporation. But My question is about the process, not this particular map, although it is a good ...
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Tiangong-1 reentry impact place probabilities

Following all the news concerning Tiangong-1, I have seen the following plot made by the Aerospace Corporation where Blue area: null probability of impact Yellow area: high probability of impact ...
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Clarify algorithm finding satellite ground track and orbit position

I try to plot satellite ground track. I found lots of formulas but hardly find algorithm which describe how to uses them one-by-one and step-by-step. As I understand the algorithm will be: 1) Get ...
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Satellite Ground Track From ECEF Frame Position And Velocity Vector

The above question may sound naive. I am trying to understand how satellite ground track can be computed when satellite position and velocity vectors are available from on-board GPS receiver of a low ...
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1answer
2k views

Ground longitude/latitude under a satellite (cartesian coordinates) at a specfic epoch

The script I'm wanting to develop uses the cartesian coordinates (XYZ) from a satellite, and in conjunction with the range, elevation and azimuth from a location, I then take a satellite’s orbital ...
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1answer
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Drawing ground station coverage circles

I'm trying to make a little application to draw ground station coverage circles (before anyone suggests using other software, I enjoy making these kinds of things myself!) I already have code that ...
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2answers
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TLE data: how to update the date?

Having a TLE data, how do I update it with -let's say- today's date ? I have the TLE of the ISS, I concluded that in order to have the location of the satellite at the moment, columns 21 to 32 should ...
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1answer
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Ground tracking : converting TLE to another format

After research, I knew that a certain TLE data can be transformed into another format (I thought about ECI) so geodetic conversion can be applied (to fetch coordinates which can be plotted) . I ...
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2answers
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How long does one orbit around the Moon take in a typical parking orbit for a stage a lander is going to meet?

I have been pondering the relative advantages of placing a base near the Moon's equator, or at the poles. The poles have been defended as having a superior business case because of deposits of ...
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1answer
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Diurnal Signature of Earth in Angular state tracking

'Diurnal signature of the earth related to the the rotation of the earth is utilized and 24 hours of amplitude and phase data is used along with Ranging and Doppler shift data to calculate Angular ...
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1answer
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Does mission control track craft in an adjacent orbit on the Mercator?

shows the Mercator screen at the centre. I'm probably wrong about this (feel free to shoot me down) but the Mercator up there appears to render what look like 3 different orbit tracks. Why are there ...
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4answers
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Calculate Satellite Coordinates From TLE Data

I know it is not that hard for those familiar with the equations for it, but I am having trouble with the math. In order to fully understand the orbit elements of TLEs I read this which I found very ...
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What was Chandrayaan-1's ground track?

I was looking for a map of Chandrayaan-1's ground track, but I wasn't able to find one. I'm looking for something like this:              &...
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1answer
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LEO metric to determine the ground track of a satellite

I'm trying to correlate a behavior on LEO satellites with the position it is over the Earth. The behavior takes place over a period of time. I'm trying to come up with a metric that will identify ...