model the earth's orbit around the sun using keplers laws in matlab. show 'real-time' calculated values for speed and time in simulation. make a simulation of it in matlab

To model Earth's orbit around the Sun using Kepler's laws in MATLAB, you can follow these steps:

  1. Define the initial conditions of Earth's orbit, such as the initial position and velocity.
  2. Use Kepler's laws to calculate the orbital parameters, such as the semi-major axis, eccentricity, and mean anomaly.
  3. Set up a time vector for the simulation, specifying the start and end time of the simulation and the time step.
  4. Iterate through each time step and calculate the position and velocity of the Earth using the orbital parameters.
  5. Plot the Earth's orbit in real-time by continuously updating the plot as the simulation progresses.
  6. Display the instantaneous speed and time values during the simulation.

Here's an example code that demonstrates the simulation:

main.m
% Simulation parameters
t_start = 0;                % Start time (in seconds)
t_end = 365 * 24 * 60 * 60; % End time (1 year)
dt = 60 * 60;               % Time step (1 hour)

% Earth's orbital parameters
semi_major_axis = 1.496e11; % Semi-major axis (m)
eccentricity = 0.017;       % Eccentricity
mean_motion = 2*pi / (365 * 24 * 60 * 60); % Mean motion (rad/s)
mean_anomaly_0 = 0;         % Initial mean anomaly (rad)

% Calculate orbital parameters
eccentric_anomaly_0 = 2*atan(sqrt((1 - eccentricity) / (1 + eccentricity)) * tan(mean_anomaly_0/2));
true_anomaly_0 = 2*atan(sqrt((1 + eccentricity) / (1 - eccentricity)) * tan(eccentric_anomaly_0/2));

% Initialize variables
position = zeros(2, length(t_start:dt:t_end));
velocity = zeros(2, length(t_start:dt:t_end));

% Simulate Earth's orbit
for t = t_start:dt:t_end
    % Calculate orbital parameters at current time
    mean_anomaly = mean_anomaly_0 + mean_motion * t;
    eccentric_anomaly = fzero(@(E) E - eccentricity * sin(E) - mean_anomaly, eccentric_anomaly_0);
    true_anomaly = 2*atan(sqrt((1 + eccentricity) / (1 - eccentricity)) * tan(eccentric_anomaly/2));

    % Calculate position and velocity at current time
    radius = semi_major_axis * (1 - eccentricity^2) / (1 + eccentricity * cos(true_anomaly));
    position(:, t/dt + 1) = [radius*cos(true_anomaly); radius*sin(true_anomaly)];
    velocity(:, t/dt + 1) = [-radius*mean_motion*sin(true_anomaly); radius*mean_motion*cos(true_anomaly)];

    % Update plot in real-time
    plot(position(1, :), position(2, :))
    xlabel('X position (m)')
    ylabel('Y position (m)')
    title('Earth Orbit Simulation')
    axis equal
    drawnow

    % Display speed and time in real-time
    speed = norm(velocity(:, t/dt + 1));
    disp(['Speed: ', num2str(speed), ' m/s | Time: ', num2str(t), ' s'])
end
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This code simulates the Earth's orbit around the Sun over a span of one year, with a time step of one hour. It calculates the position and velocity of the Earth at each time step using Kepler's laws and updates the plot in real-time. It also displays the instantaneous speed and time during the simulation.

Note: The code assumes a 2D orbital plane and neglects perturbations from other celestial bodies for simplicity.

Make sure you have MATLAB installed and run the code in the MATLAB editor or command window to see the Earth's orbit simulation with real-time calculated values for speed and time.

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