ssapy_toolkit.asteroids

Functions

H_mag(radius, albedo)	Calculate the H magnitude from the asteroid radius and albedo.
get_albedo_array([num])	Generate random albedo values and asteroid types (0 or 1).
get_eta_radius_albedo_H_array([num, ...])	Generate radius, albedo, asteroid type, and H magnitude arrays for ETA dataset.
get_neo_H_mag_array([num, upper_mag, min_mag])	Generate a random array of H magnitudes for Near-Earth Objects (NEOs).
granvik_high_slope(x)	High-slope function for Granvik distribution.
granvik_low_slope(x)	Low-slope function for Granvik distribution.
johnsonV_to_lsst_array(M_app, filters, ast_types)	Convert apparent magnitude in Johnson V to LSST filters.
johnsonV_to_ztf_array(M_app, filters, ast_types)	Convert apparent magnitude in Johnson V to ZTF filters.
radius_from_H_albedo(H[, albedo])	Calculate asteroid radius from H magnitude and albedo.

ssapy_toolkit.asteroids.H_mag(radius: ndarray, albedo: float) → ndarray

Calculate the H magnitude from the asteroid radius and albedo.

ssapy_toolkit.asteroids.get_albedo_array(num: int = 1) → tuple

Generate random albedo values and asteroid types (0 or 1). Returns (albedo_array, type_array) as NumPy arrays of length num.

ssapy_toolkit.asteroids.get_eta_radius_albedo_H_array(num: int = 1, upper_mag: float = 28, min_mag: float = 10) → dict

Generate radius, albedo, asteroid type, and H magnitude arrays for ETA dataset.

Returns:

{‘radius’: …, ‘albedo’: …, ‘type’: …, ‘H’: …}

Return type:

dict

ssapy_toolkit.asteroids.get_neo_H_mag_array(num: int = 1, upper_mag: float = 28, min_mag: float = 10) → ndarray

Generate a random array of H magnitudes for Near-Earth Objects (NEOs).

ssapy_toolkit.asteroids.granvik_high_slope(x: ndarray) → ndarray

High-slope function for Granvik distribution.

ssapy_toolkit.asteroids.granvik_low_slope(x: ndarray) → ndarray

Low-slope function for Granvik distribution.

ssapy_toolkit.asteroids.johnsonV_to_lsst_array(M_app: ndarray, filters, ast_types: ndarray) → ndarray

Convert apparent magnitude in Johnson V to LSST filters.

Parameters:

• filters (list) – List of filter names (‘u’, ‘g’, ‘r’, ‘i’, ‘z’, ‘y’).

• ast_types (np.ndarray) – Array of asteroid types (0 or 1).

ssapy_toolkit.asteroids.johnsonV_to_ztf_array(M_app: ndarray, filters, ast_types: ndarray) → ndarray

Convert apparent magnitude in Johnson V to ZTF filters.

Parameters:

• filters (list) – List of filter indices (1: ‘g’, 2: ‘r’, 3: ‘i’).

• ast_types (np.ndarray) – Array of asteroid types (0 or 1).

ssapy_toolkit.asteroids.radius_from_H_albedo(H: ndarray, albedo: float = 0.1) → ndarray

Calculate asteroid radius from H magnitude and albedo.