Questions tagged [astronomy]

Questions on the astronomical applications of Mathematica.

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2
votes
1answer
59 views

Charting sun location throughout the year from a specified geographic location

I'd like to chart the location of the sun (azimuth and elevation) from a given location (e.g., Chicago) throughout the year for a stated year (e.g., 2010). Here is the basic extraction of the current ...
1
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1answer
42 views

Units Question for PlanetData[..]

I asked a similar question yesterday, which was answered splendidly, but I missed adding a detail. Attached is a command, its output, and the issue I have now. This outputs g/cm^3, but I'd rather have ...
2
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2answers
71 views

Converting Units [duplicate]

I'm using MMA 12.2. Trying to put together some astronomy pages, but the output of the command below is in miles. I would rather have it in SI units instead. On my system evaluating ...
2
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1answer
47 views

Getting error Solve::units [closed]

I'm trying to solve the following formula for i, given values for all other variables. There are two equations, the first one is a formula to show the transit ...
22
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1answer
329 views

Travelling around Jupiter

Since we have soon historical conjunction of Jupiter and Saturn I have prepared code with visualization planet Jupiter and Saturn with moons. This code first been prepared for version 11.3 and with ...
0
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1answer
44 views

Quick question about “shifting x axis”

Imagine I have two lists: x={x1,x2,x3,x4,...} y={y1,y2,y3,y4,...} And I want a listplot ListPlot[Transpose[{x,y}]] Would do ...
5
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0answers
104 views

Fast N-Body Simulation with CUDA [closed]

There is a Mathematica code for 3 body simulation ...
3
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1answer
296 views

2 body orbits around a barycenter

I'm attempting to plot a barycentric orbit of the sun and Jupiter. Initial Conditions ...
4
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1answer
360 views

gravitational two body problem for the orbit of the sun and jupiter around their barycenter

This is a simulation of the sun and jupiter orbiting the respective barycenter. Initial conditions ...
2
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1answer
292 views

N body simulation

I'm trying to solve a 3 body problem consisting of the earth moon and sun. I'm wanting to show the earth orbiting the sun and the moon orbiting the earth as a result of the gravitational forces. ...
7
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1answer
107 views

Detect sub figures and split (automatically?)

I would like to take a large figure showing a sequence of individual plots and automatically split the into series of images showing the individual sub-plots (to be exported as animated GIF later). ...
2
votes
1answer
103 views

NDSolve Maxsteps Reached Error

I'm trying to solve a system of Equations. The code is commented below, I am mainly conserved with the last few lines, specifically the NDSolve line. No matter what I do to the Maxsteps option, the ...
3
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2answers
174 views

Solar Power Calculations

Good Afternoon, I have calculated the Incident beam radiation for a given locations local sunlight hours. ...
4
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1answer
58 views

StarData, Altitude/Azimuth Anomaly with TimeZones

I am trying to compute lunar parallax using the position of the star Regulus on February 19th of this year. I get different answers depending on how I specify the date. Here are the particulars: <...
7
votes
1answer
469 views

Can NDSolve address spherical gravitational collapse?

As far as I know spherical gravitational collapse -of central importance to theoretical physics- is thought to be out of the scope of Wolfram Mathematica. However there are cases, as in this article,...
3
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1answer
71 views

Finding the next total SolarEclipse over a given latitude and longitude?

What is a reasonable way to code the title question in Mathematica? Trying the following gave Polygons over GeoPositions over Lists of pairs, but just digging into these seemed inelegant. Besides, ...
7
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1answer
158 views

StarData: proper motion of a star in HelioCoordinates

I am not an astronomer, but am trying to calculate the trajectory of an interstellar space probe, for example to Proxima Centauri. The HelioCoordinates seem appropriate, as typically used within the ...
0
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2answers
151 views

Plotting a parametric solution from NDSolve

Im trying to animate multiple points around multiple parametric plots which depicts orbital motion of body around a planet. Initial conditons are; ...
1
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0answers
190 views
0
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1answer
447 views

Plotting elliptical orbits using Verlet method

I'm looking to solve a 2 body system consisting of the Earth and a body of mass in orbit. I'm using the Verlet method to numerically integrate Newton's equation of motion in order to plot an ...
5
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1answer
65 views

Select Specific StarData

The help menu for StarData has many examples such as StarData[EntityClass[ "Star", {EntityProperty["Star", "DistanceFromEarth"] -> TakeSmallest[10]}]] ...
-1
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2answers
103 views

a ListAnimate problem

Thanks to @AlexTrounev, I learned how to use ListAnimate, but I still get stuck using it. Before ListAnimate everything is correct. I just cannot successfully use ListAnimate to make the plot. I have ...
0
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1answer
85 views
0
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1answer
369 views

Animate particle's trajectory

Does anyone know how to animate the trajectory of a particle, but make sure before the particle reaching a certain spot, there's nothing. I mean I want to make an animation that look like https://en....
6
votes
1answer
965 views

Interpreting Mathematica code on black holes

I am trying to understand the code written down on page 7 of this document (code is in Mathematica) I understand pretty much all of the code on the previous page needed to setup the page 7 code (...
1
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0answers
287 views

Solving the values of Christoffel symbols from a given metric tensor

Is there any easy mathematica package by which I can solve the Christoffel symbols from a given metric tensor?
3
votes
1answer
151 views

Creating the celestial sphere for astronomical demonstrations

Quick question: has anybody produced (and/or willing to produce and share) a nice celestial sphere with some stars and/or constellations? I am traveling , so I cannot do it myself right now, but I ...
1
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0answers
477 views

Calculating Christoffel Symbols [duplicate]

I am totally new in the astrophysics field and I need to calculate Christoffel symbols for a model. The line element for the FLRW metric and the geodesic equation is given below: ...
0
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2answers
153 views

Using WhenEvent to calculate the period of an orbit

I'm having trouble trying to have Mathematica tell me when the period of the orbit of my system is. Namely, I'm trying to use Mathematica to find the orbital period of the Earth around the Sun. Here's ...
0
votes
1answer
150 views

Plotting the orbit of the Earth around the Sun. Error: step size is effectively zero; singularity or stiff system suspected

I've been asked to plot the orbit of the Earth around the sun over a period of three years. I've copied my exact code below. When I try to run it I get a series of errors, the first being: NDSolve:...
15
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1answer
1k views

Speed up NDSolve compared to Python (calls to LSODA)

I migrated a numerical model code from Python to Mathematica and am surprised how much faster the Python version runs. Profiling of the Python version tells me that it is about 100 times faster (120 ...
6
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1answer
142 views

Does SolarEclipse only cover a limited date range?

If I use the example from the documentation for SolarEclipse and simply replace the years there with older ones, say from around Shakespeare's time, ...
16
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2answers
893 views

Processing images from NASA's Juno Jupiter Orbiter

Question Can you help me improve what I’ve done to create an enhanced-color picture from an image provided by NASA’s JunoCam? [My work is shown in the penultimate image of Jupiter in this post.] I’...
2
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1answer
79 views

InverseFunction's domain is not the range of the function that was inverted

I wrote a function to calculate how long of a period has past when a planet traverses an angle theta from perihelion in an orbit of a given eccentricity. ...
1
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2answers
100 views

How do I pull a multiple pieces of data from a while loop and put into a table

I am wanting to pull multiple pieces of data from a while loop and put it in a list. The example I have added below is a table with inputted data that I found. Im pretty sure the syntax is unrelated ...
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0answers
103 views

SatelliteData for a hypothetical satellite

SatelliteData appears to have some sort of orbit propagator behind it. It works for existing satellites, but is there any way to use it to predict the orbit of a ...
4
votes
1answer
133 views

Typeset the standard “Moon” symbol

As it says on the tin, I want a way to typeset the astronomical symbol for the moon, which is a crescent. I also want this in such a way that I could integrate it into a button as a label, like the ...
1
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1answer
176 views

list of dates for vernal equinox

I'm trying to get a list of dates and times of the vernal equinox for the last 30 years (or some other time interval). I'm flailing about and really have gotten nowhere. When I've tried typing ...
1
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1answer
88 views

TrueAnomaly of planet orbit as a function?

It is possible to obtain the true anomaly of a planet this way: ...
1
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1answer
2k views

How to convert astronomical RA and Dec from sexagesimal to degree?

Astronomers use right ascension (RA) and declination (Dec) to refer to the sky coordinates of celestial objects. RA and Dec can take be represented degrees or in sexagesimal (base 60). How can I ...
2
votes
1answer
372 views

Calculating with scientific notation

I want to calculate the gravitational force between the Earth and its Moon using Newton's gravitational formula: (G M1 M2)/d^2 and its appropriate physical units. I'd include the code I wrote for ...
4
votes
1answer
428 views

Lagrangian form of Earth-Sun Kepler blows up NDSolve?

I've looked at this 1-D SE question. That question seems to have difficulties around diverging potential functions, and I don't have that. I've looked at this 2-D 3-body demonstration, but that starts ...
2
votes
0answers
392 views

Plotting orbits of trajectories of bodies sharing the earth's orbit in coordinates centered at the barycenter of the solar system [closed]

I am attempting to try and plot the trajectories of a trio of satellites that are orbiting with the earth-moon system around the solar system's barycenter. Originally, I had the satellites in orbit ...
4
votes
1answer
527 views

Orbit followed by a particle around Schwarzschild Black Hole

The following is a equation which describes various possible orbits of a particle around the Schwarzschild black hole spacetime in general relativity. I want to solve it from ...
6
votes
1answer
185 views

TimeZone Anomaly

I ran into the following situation when I was trying to determine the time of sunrise (using the built-in Sunrise function) for a variable location on a variable ...
11
votes
1answer
449 views

Calculate moonrise

Mathematica has Sunrise[], but no Moonrise[]. But it has MoonPosition[], so I thought it ...
12
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3answers
598 views

How to speed up plotting with PlotPoints?

I'm plotting an ellipse 1/(1 - e Cos[x]) with e=0.9 using PolarPlot. Taking $x\in[0,2\pi)$, ...
10
votes
1answer
438 views

Plotting how sunrise times change over the year

I created a somewhat lengthy Python code to show how the time of sunrise varies over a year, resulting in the following figure (daylight savings were disregarded): The dataset can be found here. The ...
1
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0answers
209 views

Orbit recognition error in planet motion [closed]

...
4
votes
1answer
122 views

Is MoonPosition working as expected?

I have noticed some surprising behavior when executing the MoonPosition function. When I provide a range of dates, I get a TemporalData answer: ...