All Questions
Tagged with artificial-satellitetwo-line-elements
23 questions
1vote
1answer
311views
Distance between a satellite and an orbit
I would like to compute the distance between a satellite and a specified orbit. For instance, for an orbit at 897 km altitude, 0 degree eccentricity, 99 degree inclination, and RAAN of 0 degrees on ...
4votes
1answer
752views
Plot ellipse using elements from TLE
I am trying to draw an ellipse as satellite orbit in three.js, It has an EllipseCurve class which takes these inputs and draws an ellipse around center. EllipseCurve( aX : Float, aY : Float, xRadius : ...
1vote
0answers
424views
Is there a python library to determine the position of a satellite at a given time from TLE data excluding the Satellite catalog number?
Or perhaps some simple code or formula that achieves this. I've used pyephem but it requires a Satellite catalog number.
- 71
1vote
1answer
2kviews
Are the TLE of a satellite computed with the ECI or ECEF?
I want to compute the distance of a certain satellite, given the TLE, to a ground station in the earth. I have the latitude, longitude and altitude of the ground station. But I don't know if the TLEs ...
- 11
1vote
0answers
39views
satellite orbit propagation from initial position and velocity [duplicate]
I'm trying to get the satellite orbit at a certain time given the initial position and velocity (SGP4) say I have a TLE file that is taken in epoch:(2022-01-05 11:25:15.578) and I need to get the ...
- 63
6votes
1answer
3kviews
Tutorial for orbits from TLE data
I've been looking for a new hobby, and have been reading some about satellite tracking. I was wondering if there was a good tutorial that walks through how to use TLE data. So far I have found ...
- 332
5votes
1answer
969views
Get dates when a satellite has performed maneuver from historical TLE data (python)?
I have been recently acquainted with orbital mechanics and am trying to do some analysis on the subject. Since I don't have subject matter expertise, I am at a crossroads with trying to decide that ...
6votes
1answer
1kviews
How can I plot satellite's trajectory from three different TLEs to detect any deviation on path with time?
I have obtained TLE information of a satellite from space-track.org for three different times. I am trying to study any deviation of the satellite trajectory from its usual path. Here I am comparing ...
- 61
7votes
3answers
746views
How do two-line element sets handle rev numbers > 99,999?
In a two-line element set (TLE), five characters in line 2 -- columns 64-68 -- are for the rev number. (https://en.wikipedia.org/wiki/Two-line_element_set) But some satellites have been around the ...
8votes
3answers
2kviews
Why is the NORAD Catalog number of SpaceX's Starlink's "Darksat" both 71130 and 44972?
@BowlOfRed's answer to Which of the recently launched Starlink satellites is the coated one? links to Celestrak's supplemental table for Starlink. https://celestrak.org/NORAD/elements/supplemental/...
- 153k
5votes
1answer
332views
Why the PRN obtained from Android is different from calculated by TLE
I want to use TLE data to calculate the azimuth and elevation of every GPS satellites at user's location. In order to verify the correctness of TLE calculation, I wrote an Android app that can be ...
- 53
2votes
2answers
504views
Can the deactivated satellites also be tracked through TLE?
TLE is used to track whether the satellites are in orbit or not. However, is it possible that a particular satellite is deactivated, decommissioned or deorbited yet its TLE is being updated regularly?
- 29
3votes
1answer
153views
Does this electronics box, or any other non-spacecraft released by astronauts have a TLE?
According to Space.com's 02-Feb-2018 article Cosmonauts Break Russian Spacewalk Record During Space Station Antenna Repair: The cosmonauts spent the day replacing an electronics box for a high-gain ...
- 153k
2votes
0answers
376views
How can I plot a precessing orbital plane of an artificial satellite on a polar plot from a TLE in Python?
How can I plot the orbital plane of an artificial satellite on a polar plot from a TLE in Python? Very new to all of this. As I understand it I need to extract TLE's from Space-track.org. Then use ...
21votes
3answers
27kviews
How can I plot a satellite's orbit in 3D from a TLE using Python and Skyfield?
I have obtained a Two Line Element (TLE) of a satellite in Earth orbit from Celestrak at https://celestrak.org/NORAD/elements/ and I would like to use it to calculate an orbit. How can I calculate the ...
- 153k
