v0.5.0

Revised required and optional packages:

• Only numpy and astropy are required; scipy, synphot, ads, and astroquery are
  now optional dependencies. [#383]

• Created an option to install a recommended list of packages, e.g., pip install sbpy[recommended]. [#383]

• Require astropy >= 5.3.3 to avoid a security vulnerability. [#400]

New Features

sbpy.activity

• New sbpy.activity.CircularAperture.from_coma_equivalent() to immediately
  create a CircularAperture from any other Aperture given a nominal coma
  surface brightness distribution. [#393]

sbpy.dynamics

• New class to encapsulate dynamical state vectors: sbpy.dynamics.state.State. [#394]

• New support for dynamical integrations: sbpy.dynamics.models. Three models
  are implemented: FreeExpansion, SolarGravity, and SolarGravityAndRadiationPressure. [#394]

• New ability to produce dust syndynes and synchrones: sbpy.dynamics.syndynes. [#394]

sbpy.time

• New sub-module to support conversions to NAIF SPICE ephemeris time. [#394]

API Changes

sbpy.sources

• Deprecated SynphotRequired. Use
  sbpy.execptions.RequiredPackageUnavailable. [#383]

Bug Fixes

• sbpy.sources.SpectralSource now correctly raises
  RequiredPackageUnavailable when synphot is not available, replacing a
  locally defined SynphotRequired or the generic ImportError. [#383]

• Fix sbpy.photometry.bandpass crash when reading in SDSS filter transmission
  curves using synphot 1.4. [#400]

• Fixed missing CALSPEC solar spectrum from sbpy.calib.solar_sources. [#387]

Developer notes

sbpy.utils

• New required_packages and optional_packages functions to test for the
  presence of required and optional packages. [#383]

sbpy.utils.decorators

• New requires and optionally_uses function decorators to simplify testing
  for required and optional packages. [#383]

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]

v0.3.1

Bug fix for online documentation.

v0.3.0

See CHANGES.rst for the full change log.

v0.2.2

Tagging v0.2.2

First Year of Development (v0.2)

This release includes mostly complete functionality for dealing with data, calibrations, and bibliography. Limited functionality is available for the modeling of gas and dust activity, as well as disk-integrated photometry.

Future releases are expected to be backward-compatible to this release.

JOSS publication

minor updates from version 0.1 from JOSS review process

first official release

First release with limited and preliminary functionality in data, photometry, activity, and spectroscopy.