Questions tagged [geosynchronous]

Questions regarding the type of orbit in which the orbiting object stays in roughly the same location over Earth's surface.

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Computing a new TLE following a delta-v impulse?

Is there some code or a library out there that can take orbital elements, add a known delta-v component and then compute a new TLE? I found this one https://apps.dtic.mil/dtic/tr/fulltext/u2/a289281....
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Station Keeping East-West Maneuver

A GEO satellite spends 14 days in longitude deadband (+/-0.067 deg). At the 14th day, I want to perform an east-west maneuver. But I am uncertain what time I should perform the maneuver at the 14th ...
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Is a polar geosynchronous orbit described by Viviani's curve?

This answer to Is there a name for the great circle where latitude and longitude are equal? says (in part): More generally, a clélie is the name given to any spherical curve where the longitude $\...
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What's the method behind this TDRS triplet inclination “madness”?

Previous "method to the maddness" questions: 1, 2. The image below is from Why does TDRS 1's inclination evolve so much differently than that of all the others starting in 1995? and I've used it a ...
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Why would a mission choose a geosynchronous orbit over a geostationary orbit?

I was going to ask "Are there any missions where a geosynchronous orbit is advantageous over a geostationary orbit?" The TL;DR answer to this question (Are there any satellites in geosynchronous but ...
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Is an Earth synchronous (?) polar orbit possible?

I don't even know how to exactly ask this question. A coworker is doing some experiments on a data visualization software and he has some test data showing fake telemetry from a simulated satellite. ...
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How do stable equilibrium points work in GEO? If all geosynchronous spacecraft suddenly lost stationkeeping, would most “fall into” one or the other?

The (currently unanswered) question Quantitatively, how deep are the stable equilibrium points in GEO? How much delta-v to move from one to the other? (also see comments at Delta-v to move from GEO to ...
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How does the “eccentricity-inclination vector separation” technique work for colocated GEO satellites?

This answer to How are co-located satellites positioned relative to each other? links to the paywalled paper Separation of Geostationary Satellites with Eccentricity and Inclination Vector with the ...
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In what state are satellites left in when they are left in a graveyard orbit?

I had this idea for a fictional scenario in which a forgotten satellite, like a communications satellite that was decommissioned because it was replaced by a newer model, was hacked into and then ...
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Are there any satellites in geosynchronous but not geostationary orbits?

I know there are a lot of geostationary satellites out there, but I'm wondering - are there any geosynchronous satellites that are not geostationary (ie - have a notable inclination to their orbit)?
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Are there cubesats in GEO?

This answer to the question How often do reaction wheels require desaturation, normally? says: One practical example I know of is for a 6U in GEO that is always sun pointed, there's a thruster ...
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Why would the orbit of a satellite in GEO climb by 21 km in altitude over six months by itself?

This answer mentions several effects that tend to move geostationary satellites out of their "box" over time, but one really surprised me. According to the plot below (from there, but ...
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How would propagation differ between a GEO and a Retrograde GEO?

A Binary Equatorial Synchronous Retrograde Orbit is an orbit that would travel in the opposite direction of GEO and would pass over the same point on Earth twice per day at the same altitude of GEO. ...
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What is a typical satellite solar panel mass?

Does anyone know a reliable source to find the mass of solar panels on satellites (in particular GEO satellites)? I know they will vary but I am struggling to even find one data point let alone a ...
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How would the antenna on a spacecraft in GEO be provided an electrical ground?

I would like to understand better what specifications or guidelines address the electrical grounding/Earthing a parabolic reflector Antenna in GEO to minimize the potential difference with respect to ...
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How is stability of Geosynchronous Orbits (GSO) affected by Earth’s mass?

I'm researching stable orbits slightly beyond GSO and I need to find out how close to GSO I could place an object without risking collision. If the Earth was homogeneous the altitude should be the ...
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Teleporting an object into geosynchronous orbit

Assuming that a method was found to teleport objects, and at huge range, if an object was teleported from the surface to a location at the correct height (Wikipedia says about 42,164 km from the earth'...
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Why do the geosynchronous TDRS satellites have this distribution of inclinations?

From the Tracking and Data Relay Satellite System (TDRSS) option on Celestrak's NORAD Two-Line Element Sets Current Data TLE page I've compiled current TLE ...
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Do satellite uplink/downlink signals spread or leak into space?

Satellite communication generally involves three types of nodes: the ground station (also known as teleport), the satellite in geosynchronous orbit, and the satellite receiver/transceiver. I am ...
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What is the maximum inclination a geosynchronous orbit can have?

A geosynchronous orbit is one where a satellite's orbital period (more or less) matches a planet's rotation period. However, this is distinct from a geostationary orbit, where a satellite must remain ...
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Who will remove orbiting space debris? [duplicate]

How long until we have something orbiting that can collect up the dead space debris in geosynchronous orbit and make way for new things to be placed in orbit?
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Difference between Tundra and Molniya orbits?

This excellent answer nicely describes both Tundra orbits and Molniya orbits. They are both repeat groundtrack orbits with periods of rational fractions of a sidereal day, and both have inclinations ...
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What is the smallest launch vehicle that has put a satellite in a geostationary orbit?

Minotaur V might become a candidate for the smallest current launcher to put a payload in GEO, but it has only launched LADEE yet. The first satellite in GEO seems to have been Syncom 1 which launched ...
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Is TDRS-M (TDRS-13) where it's supposed to be?

edit: Status 2018-Jan-01 inclination still about 7 degrees, location still not listed in Wikipedia. This question got me thinking about the location of active TDRS satellites, and the newest ...
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ISS Speed required for true geosynchronous orbit

How fast would ISS need to travel at the current altitude (LEO 250mi) to be geosynchronous with say 36 degree N lattitude?
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How big (broad) is GEO orbit?

This post got me thinking about something I've never quite been able to picture about geostationary orbit. In a perfect model of a spherical earth, there is an infinitesimal circle in the plane of the ...
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Why are obsolete geostationary satellites re-orbited above the geostationary belt?

That seems a bit counter-intuitive, because in an orbit above the belt, the satellite would eventually lose gain velocity, so its orbit would intersect the orbital plane of the geostationary ...
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Could you enter this building when it was over New York City?

The Forbes article New York Architects Plan Enormous Skyscraper Hanging From An Asteroid In Space describes a sky scraper suspended from an asteroid in a geosynchronous (but not geostationary) orbit ...
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How can space junk be dangerous at geosynchronous orbits?

At this orbit wouldn't all space junk be traveling at the same speed as the spaceship/satellite transversing it? To be dangerous it should be traveling at a much faster (or slower) rate than the ...
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How can I determine if a rotating space station is stable

How can I determine if a rotating thin shell cylinder space station is stable? Its dimensions are: radius = 895m length = 1150m thickness of the shell = 15m The ...
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What factors prohibit building a space cannon to launch raw materials? [duplicate]

I am envisioning a magnetic cannon to launch materials directly from Earth's surface to geosynchronous equatorial orbit. The parameters I have in mind are a near vacuum launch tube, about 10 km in ...
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Would it be possible to suspend a space elevator in the stratosphere?

Having a material strong enough to support a space elevator built from the ground up seems like it may never be able to happen. I had also seen another suggestion for building a space elevator ...
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Why would a space elevator / structure need to be in Geosynchronous orbit?

I've read a bunch on space elevators and from what everyone is saying, it would be required that the elevator is in geosynchronous orbit. From my understanding, that is so that it would stay fixed in ...
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Why do geosynchronous satellites appear to oscillate in North-Southward direction? How to I trace out their path on the surface of the earth?

During the course of a day, the geosynchronous satellite's position in the sky forms a 8-like figure. I'm having trouble visualizing the movement of geosynchronous satellite when viewed from the ...
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How do geosynchronous orbits follow the tilt of the earth?

I understand that by sending objects to a specific altitude you can get an object to orbit over a specific area of the Earth. What I have a tough time grasping is how that object then follows the ...
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Is it possible to deliver enough LEO satellites with one launch to substitute for one in GEO?

Rough estimates shows that having around one hundred satellites would be enough to observe a single spot on Earth continuously and via peer to peer communication deliver that information to an earth-...
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How do communication satellites remain positioned above a particular region?

From what I understand, an object has to keep moving in an orbit to not come crashing down to Earth. (The ISS is the first thing I think of for this.) How then, do satellites which are purpose built ...
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min time a direct ascent ASAT rocket would take to reach GEO [closed]

Trying to work out a rough time estimate for an ASAT rocket to reach GEO height?
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Calculate Low/High/Geo orbits for other planets? - math lite - gamedev

I have a situation where I have proceduraly generated planets and moons in a solar system. These bodies have varying mass and radius. Now what I want to do is be able to define a circular orbital ...
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Why is the ribbon of decommissioned geosynchronous satellites skewed?

I was looking at this 3D map of satellites orbiting earth and noticed something interesting. Around the green ring of active geosynchronous satellites, there is a ribbon of what I assume are obsolete ...
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Why is geosynchronous orbit an altitude, rather than a velocity?

When people talk about geosynchronous orbit--an orbit in which the satellite continuously remains "directly overhead" for the same ground position on Earth--they talk about it being at a specific ...
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How are geosynchronous satellites launched to such an incredible height?

Most satellites are launched to a mere fraction of the altitude at which geosynchronous satellites orbit. How are geosynchronous satellites carried so high? Do they store a lot of propellant on ...
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How much do eccentricities of different satellites in GSO vary?

It's improbable to get a payload into a perfect orbit, but obviously there is room for error, otherwise payloads in GSO would not work as well as they do. If the target eccentricity for a payload in ...
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Why did the recent Sirius FM6 launch use such a high inclination?

Earlier today a Proton-M rocket took off, carrying a Sirius FM6 satellite radio payload destined for geosynchronous orbit. Nothing super exciting, Briz-M upper stage for transfer burns and then the ...
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At which point would two GSO/GEO satellites with similar orbital elements be closest to each other?

While I was answering another question on How closely spaced are satellites at GEO I came to realize I can't really word it with much conviction how two close proximity satellites in GEO/GSO orbits ...
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What is the current cost per kg to send something into GSO/GEO?

I was reading this article and thought it was reasonably cheap, probably because I mistook LEO for GEO. What is the going rate to get something into GeoStationary Orbit and Geosynchronous Equatorial ...
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What is the life expectancy of a geosynchronous satellite dependent on?

When a geosynchronous/geostationary satellite is launched, how do its designers calculate its life expectancy? A random sampling of some communication satellites suggest that ~ten years might be the ...
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How full is the geostationary belt?

The geostationary ring clearly seen in the above picture looks alarmingly crowded. How full is it? How much space does a satellite in that orbit require to operate safely? Surely, (other) ...
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Do any launches bypass LEO?

If sending a payload to GEO (geosynchronous orbit) or any other high orbit, you could start off launching to LEO (low Earth orbit), and then use a Hohmann transfer to raise the height of the orbit. I ...
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What creative orbital maneuvers might I do to save fuel for a geosynchronous spacecraft?

I've heard that there might be some creative ways to get to Geosynchronous Orbit that could save a lot of fuel. How might I manage to make this happen?