irfpy.jupsci.moontrace

Moon’s trace.

io_trace_simple() gives you a very simple model of trace of Io in the System III frame (n km). In this simple model, the Io is confiened in the equatorial plane, with a perfect orbit with radius of 421700 km. In reality, the tilt of 0.05 degrees and the exhccentricity of 0.0041 should be considered, but for more sphisticated purposes, you should use the SPICE. Same for all the Galelian moons have been implemented.

irfpy.jupsci.moontrace.io_trace_simple(resolution=31)

The simplest model of Io’s trace.

Confined in equator, with a constant radius of 421700 km.

Parameters

resolution – The resolution.

Returns

The (resolution, 3) shaped array.

>>> traj = io_trace_simple(resolution=17)    # resolution 17 means angle separation of 360/(17-1) = 22.5 deg.
>>> print(traj.shape)
(17, 3)
>>> print((traj[:, 2] == 0).all())   # All data point has z-component as 0
True
>>> print(traj[0, :])
[ 421700.       0.       0.]
>>> print(np.array_str(traj[4, :], suppress_small=True))
[      0.  421700.       0.]

irfpy.jupsci.moontrace.europa_trace_simple(resolution=31)

The simplest model of Europa’s trace.

Confined in equator, with a constant radius of 670900 km.

Parameters

resolution – The resolution.

Returns

The (resolution, 3) shaped array.

>>> traj = europa_trace_simple(resolution=17)    # resolution 17 means angle separation of 360/(17-1) = 22.5 deg.
>>> print(traj.shape)
(17, 3)
>>> print((traj[:, 2] == 0).all())   # All data point has z-component as 0
True
>>> print(traj[0, :])
[ 670900.       0.       0.]
>>> print(np.array_str(traj[4, :], suppress_small=True))
[      0.  670900.       0.]

irfpy.jupsci.moontrace.ganymede_trace_simple(resolution=31)

The simplest model of Ganymede’s trace.

Confined in equator, with a constant radius of 1070400 km.

Parameters

resolution – The resolution.

Returns

The (resolution, 3) shaped array.

>>> traj = ganymede_trace_simple(resolution=17)    # resolution 17 means angle separation of 360/(17-1) = 22.5 deg.
>>> print(traj.shape)
(17, 3)
>>> print((traj[:, 2] == 0).all())   # All data point has z-component as 0
True
>>> print(traj[0, :])
[ 1070400.        0.        0.]
>>> print(np.array_str(traj[4, :], suppress_small=True))
[       0.  1070400.        0.]

irfpy.jupsci.moontrace.callisto_trace_simple(resolution=31)

The simplest model of Callisto’s trace.

Confined in equator, with a constant radius of 1882700 km.

Parameters

resolution – The resolution.

Returns

The (resolution, 3) shaped array.

>>> traj = callisto_trace_simple(resolution=17)    # resolution 17 means angle separation of 360/(17-1) = 22.5 deg.
>>> print(traj.shape)
(17, 3)
>>> print((traj[:, 2] == 0).all())   # All data point has z-component as 0
True
>>> print(traj[0, :])
[ 1882700.        0.        0.]
>>> print(np.array_str(traj[4, :], suppress_small=True))
[       0.  1882700.        0.]