grss.libgrss.CloseApproachParameters

class grss.libgrss.CloseApproachParameters

Bases: pybind11_object

The CloseApproachParameters class contains parameters used for calculating the close approach between two integrated or SPICE bodies.

__init__(self: grss.libgrss.CloseApproachParameters) → None

Methods

__init__(self)
get_ca_parameters(self, propSim, tMap)	Calculate the close approach parameters.
print_summary(self[, prec])	Print a summary of the close approach parameters.

Attributes

bMag	Magnitude of the B-vector of the close approach (Impact parameter).
bVec	B-vector of the close approach.
centralBody	Name of the central body.
centralBodyIdx	Index of the central body.
centralBodySpiceId	SPICE ID of the central body.
dist	Distance of the close approach.
dt	Partials of time of periapsis with respect to CA state.
dtLin	Partials of linearized time of periapsis with respect to CA state.
flybyBody	Name of the flyby body.
flybyBodyIdx	Index of the flyby body.
gravFocusFactor	Lambda parameter of the close approach (gravitational focusing).
impact	Whether the close approach is an impact when accounting for gravitational focusing.
kizner	Kizner B-plane parameters of the close approach.
mtp	Modified Target Plane (MTP) B-plane parameters of the close approach.
opik	Öpik B-plane parameters of the close approach.
scaled	Scaled B-plane parameters of the close approach.
t	Time of the close approach or impact.
tCA	Time of the close approach.
tLin	Linearized time of periapsis
tMap	Time of mapping.
tPeri	Time of periapsis (according to Keplerian hyperbolic motion).
vInf	Hyperbolic excess velocity of the close approach.
vel	Velocity of the close approach.
xRel	Relative state of the close approach or impact.
xRelCA	Relative state of the close approach.
xRelMap	Relative state at map time.

property bMag

Magnitude of the B-vector of the close approach (Impact parameter).

property bVec

B-vector of the close approach.

property centralBody

Name of the central body.

property centralBodyIdx

Index of the central body.

property centralBodySpiceId

SPICE ID of the central body.

property dist

Distance of the close approach.

property dt

Partials of time of periapsis with respect to CA state.

property dtLin

Partials of linearized time of periapsis with respect to CA state.

property flybyBody

Name of the flyby body.

property flybyBodyIdx

Index of the flyby body.

get_ca_parameters(self: grss.libgrss.CloseApproachParameters, propSim: PropSimulation, tMap: float) → None

Calculate the close approach parameters.

Parameters:

• propSim (PropSimulation) – Simulation containing the close approach.

• tMap (real) – Time of the mapping point.

Returns:

None – None.

Return type:

NoneType

property gravFocusFactor

Lambda parameter of the close approach (gravitational focusing).

property impact

Whether the close approach is an impact when accounting for gravitational focusing.

property kizner

Kizner B-plane parameters of the close approach.

property mtp

Modified Target Plane (MTP) B-plane parameters of the close approach.

property opik

Öpik B-plane parameters of the close approach.

print_summary(self: grss.libgrss.CloseApproachParameters, prec: int = 8) → None

Print a summary of the close approach parameters.

Parameters:

prec (int, optional) – Precision of the printed values, by default 8.

Returns:

None – None.

Return type:

NoneType

property scaled

Scaled B-plane parameters of the close approach.

property t

Time of the close approach or impact.

property tCA

Time of the close approach.

property tLin

Linearized time of periapsis

property tMap

Time of mapping.

property tPeri

Time of periapsis (according to Keplerian hyperbolic motion).

property vInf

Hyperbolic excess velocity of the close approach.

property vel

Velocity of the close approach.

property xRel

Relative state of the close approach or impact.

property xRelCA

Relative state of the close approach.

property xRelMap

Relative state at map time.