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v0.6.0 (2025-12-02)

Update supported versions [#419]: - Python >= 3.9 - numpy >= 1.26 - scipy >= 1.10

New Features

sbpy.activity.gas

  • Added active and quiet sun photolysis rates for H2O and CO2 from Huebner & Mukherjee 2015 to sbpy.activity.gas.photo_timescale. [#425]

sbpy.names

  • Added functionality to sbpy.Names.from_packed() and sbpy.Names.to_packed() to handle new extended provisional designations to be implemented by the MPC in anticipation of higher asteroid discovery rates in the LSST survey era. [#406]

API Changes

sbpy.activity.gas

  • Data source is now a required parameter for sbpy.activity.gas.photo_lengthscale and sbpy.activity.gas.photo_timescale. If the data source is None, then a table of sources will be printed. [#425]

sbpy.activity.gas.productionrate

  • Data source is now a required parameter for sbpy.activity.gas.productionrate.beta_factor. [#425]

sbpy.ginga_plugins

sbpy.data.ephem

  • New command-line script: sbpy-ephem. [#396]

Other Changes and Additions

sbpy.activity.gas

  • Replaced calls to the deprecated function scipy.integrate.romberg with scipy.integrate.quad. [#412]

sbpy.names

  • Fixed `sbpy.Names.to_packed()' to raise an error in cases of invalid cometary designations with fragment specifiers (e.g., "2024 A-A" and "2024 A-AA" now correctly raise TargetNameParseError exceptions) [#417]
  • Fixed `sbpy.Names.parse_comet()' to raise an error in cases of a provisional asteroid designation submitted with no space after the year (e.g., "2015XN77"), which was previously being interpreted as a well-formed comet designation (i.e., with number=2015, type=X, and name=N77), but now raises a TargetNameParseError [#422]
  • Fixed `sbpy.Names.parse_asteroid()' to raise an error in cases of a provisional comet designation submitted with no forward slash between the lead character and the year, and no space after the year (e.g., "P2015XN77"), which was previously being interpreted as a packed asteroid designation, but now raises a TargetNameParseError [#422]

0.5.0 (2024-08-28)

  • 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]

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]

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]

sbpy.calib

  • Fixed: the CALSPEC solar spectrum was missing from solar_sources. [#387]

0.4.0 (2023-06-30)

  • 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]

0.3.0 (2022-04-28)

New Features

sbpy.activity

  • New VectorialModel to implement the Festou (1981) model of the same name. The code reproduces tests based on the literature within 20%, but the causes of the differences are unknown. Help testing this new feature is appreciated. [#278, #305]

sbpy.data

  • DataClass fields are now checked for physically consistent units (e.g., heliocentric distance in units of length), or that they are Time objects, as appropriate. [#275]

sbpy.photometry

  • Add ATLAS c and o bandpasses to bandpass. [#258]

sbpy.spectroscopy

  • Add the ability to redden SpectralSource (such as the Sun model in sbpy.calib) with a new .redden() method. [#289]

Bug Fixes

sbpy.activity

  • Allow apertures to be astropy Quantity objects in GasComa models, e.g., Haser. [#306]

sbpy.data

  • Corrected Orbit.oo_propagate units on angles from degrees to radians. [#262]
  • Corrected Orbit fields from openorb to use 'Tp' for perihelion date epochs as astropy Time objects, instead of 'Tp_jd'. [#262]
  • Corrected Name.from_packed which could not unpack strings including "j". [#271]
  • Remove hard-coded URL for JPL Horizons and astroquery's Horizons objects. [#295]
  • NaNs no longer crash Phys.from_sbdb. [#297]
  • When units are not included in the Phys.from_sbdb results returned from NASA JPL, return unit-less values (and any description of the units, such as 'density_sig') to the user. [#297]
  • Names.parse_comet now correctly parses Pan-STARRS if included in a comet name string, and corrected the label for fragment names in C/ objects: 'fragm' --> 'fragment' . [#279]
  • Preserve the order of the user's requested epochs in Ephem.from_horizons. [#318]

sbpy.photometry

  • Corrected PS1 filter wavelength units in bandpass from Å to nm. [#258]
  • Fix HG1G2 to respect the units on phase angle ph or else assume radians. [#288]

API Changes

sbpy.data

  • DataClass.field_names now returns a list of field names rather than a list of internal column names. [#275]

Other Changes and Additions

  • Improved compatibility with Python 3.8 [#259]
  • Added support for astropy 4.0, drop support for astropy 3. [#260, #322]
  • Infrastructure updated to use contemporary astropy project standards. [#284]
  • Tests may be run in parallel with pytest, e.g., using -n auto. [#297]

0.2.2 (2020-04-27)

New Features

None

Bug Fixes

sbpy.activity

  • Fix exception from Haser when CircularAperture in linear units is used. [#240]

sbpy.data

  • DataClass.__getitem__ now always returns a new object of the same class, unless a single field name is provided in which case an astropy.Table.Column (no units provided) or astropy.units.Quantity (units provided) is returned. [#238]
  • Fixed Ephem.from_horizons to skip adding units to the 'siderealtime' field if it is missing. Now, the only required field is 'epoch'. [#242]
  • Ephem.from_horizons no longer modifies the epochs parameter in-place. [#247]

sbpy.photometry

  • Fixed HG12_Pen16 calculations, which were using the 2010 G1 and G2 definitions. [#233]
  • Use "Partner" under NASA logo. [#249]

API Changes

None

Other Changes and Additions

sbpy.activity

  • Test Haser.column_density output for angular apertures << lengthscale. [#243]

website

  • Use HTTPS everywhere. [#244]

0.2.1

This version was not released.

Notes

This changelog tracks changes to sbpy starting with version v0.2. Recommended subsection titles: New Features, Bug Fixes, API Changes, and Other Changes and Additions. Recommended sub-sub-section titles: sbpy submodules, in alphabetical order.