v0.4.0

• Updated minimum supported versions:
  • Python 3.8
  • numpy 1.18
  • astropy 4.3
  • synphot 1.1
  • astroquery 0.4.5

New Features

sbpy.activity

• Added VectorialModel.binned_production constructor for compatibility with
  time-dependent production implemented in the original FORTRAN vectorial model
  code by Festou. [#336]

• Added VMResult, VMFragmentSputterPolar, VMParams,
  VMGridParams, VMFragment, and VMParent dataclasses to expose
  details of VectorialModel results that may be of interest. [#336]

sbpy.calib

• Added a model spectrum of the Sun from STScI's CALSPEC database (Bohlin et al.
  2014, PASP 126, 711, DOI:10.1086/677655). [#371]

sbpy.data

• Added Orbit.tisserand to calculate the Tisserand parameter of small body's
  orbits with respect to planets. [#325]

• Added Orbit.D_criterion to evaluate the D-criterion between two sets of
  orbital elements. [#325]

• Added DataClass.__contains__ to enable in operator for DataClass
  objects. [#357]

• Added DataClass.add_row, DataClass.vstack methods. [#367]

sbpy.photometry

• Added parameter constraints to the IAU disk-integrated phase function models,
  such as HG, HG1G2, HG12, and HG12_Pen16. [#366]

Documentation

• Index page has been reorganized. [#337]

API Changes

sbpy.activity

• VectorialModel now no longer takes an angular_substeps parameter. [#336]

sbpy.data

• IAU HG series functions moved from sbpy.photometry.core to sbpy.photometry.iau. [#354]

sbpy.photometry

• Replaced NonmonotonicPhaseFunctionWarning with
  InvalidPhaseFunctionWarning. [#366]

Bug Fixes

sbpy.calib

• Updated STScI URLs for solar spectra (Castelli and Kurucz models). [#345]

sbpy.data

• Cometary magnitudes obtained via Phys.from_sbdb (i.e., M1 and M2) now have
  appropriate units. [#349]

• Asteroids with A/ designations (e.g., A/2019 G2) are correctly identified by
  Names as asteroids. Improved handling of interstellar object (I/)
  designations: they do not parse as cometary or asteroidal. [#334, #340]