space-classy 0.8.8

classification tool for minor bodies using reflectance spectra and visual albedos

Showcase - Install - Documentation

A tool to explore, download, analyse, and classify asteroid reflectance spectra. Originally designed for classification in the taxonomy of Mahlke, Carry, and Mattei 2022, it now offers multiple taxonomic systems and a suite of quality-of-life features for spectroscopic analysis.

Showcase

Things that classy tries to do well. All functionality is available via the command line and the python interface. Some functionality is available via the web interface.

Explore and compare.

Quickly find and download spectra in public repositories.

Example: List all spectra of asteroids in the Themis family with albedos up to 0.06 that cover the 0.45-1.8μm range.

$ classy spectra --wave_min 0.45 --wave_max 1.8 --family Themis --albedo ,0.06
+-----------+--------+----------+----------+--------+---------------------+--------+--------+-----------------+
| name      | number | wave_min | wave_max | phase  | date_obs            | family | albedo | shortbib        |
+-----------+--------+----------+----------+--------+---------------------+--------+--------+-----------------+
| Themis    | 24     | 0.435    | 2.49     | 12.917 | 2005-10-08T05:28:30 | Themis | 0.051  | MITHNEOS Unpub. |
| Themis    | 24     | 0.45     | 2.4      | -      | -                   | Themis | 0.051  | Fornasier+ 2016 |
| Themis    | 24     | 0.435    | 2.49     | 12.876 | 2005-10-08T00:00:00 | Themis | 0.051  | DeMeo+ 2009     |
| Adorea    | 268    | 0.44     | 2.4      | -      | -                   | Themis | 0.039  | Fornasier+ 2016 |
| Lipperta  | 846    | 0.45     | 2.39     | -      | -                   | Themis | 0.05   | Fornasier+ 2016 |
| Lermontov | 2222   | 0.45     | 2.38     | -      | -                   | Themis | 0.051  | Fornasier+ 2016 |
+-----------+--------+----------+----------+--------+---------------------+--------+--------+-----------------+
                                                    6 Spectra

Analyse and classify.

Persistent preprocessing and feature recognition for quick classification.

Example: Classify the spectra above following Mahlke+ 2022, DeMeo+ 2009, and Tholen 1984.

$ classy classify --wave_min 0.45 --wave_max 1.8 --family Themis --albedo ,0.06
+-----------+--------+----------+----------+--------+--------------+-------------+--------------+-----------------+
| name      | number | wave_min | wave_max | albedo | class_mahlke | class_demeo | class_tholen | shortbib        |
+-----------+--------+----------+----------+--------+--------------+-------------+--------------+-----------------+
| Themis    | 24     | 0.435    | 2.490    | 0.0507 | C            | C           | G            | MITHNEOS Unpub. |
| Themis    | 24     | 0.450    | 2.400    | 0.0507 | C            | C           |              | Fornasier+ 2016 |
| Themis    | 24     | 0.435    | 2.490    | 0.0507 | C            | C           | G            | DeMeo+ 2009     |
| Adorea    | 268    | 0.440    | 2.400    | 0.0389 | S            |             |              | Fornasier+ 2016 |
| Lipperta  | 846    | 0.450    | 2.390    | 0.0504 | P            | X           |              | Fornasier+ 2016 |
| Lermontov | 2222   | 0.450    | 2.380    | 0.0513 | P            | C           |              | Fornasier+ 2016 |
+-----------+--------+----------+----------+--------+--------------+-------------+--------------+-----------------+
                                                      6 Spectra

Visualise and export.

Quick-look plots at any step to verify your analysis.

Example: Show the spectra and the classification results.

$ classy classify --wave_min 0.45 --wave_max 1.8 --family Themis --albedo ,0.06 --plot

Install

classy is available on the python package index as space-classy:

$ pip install space-classy[gui]

Documentation

Check out the documentation at classy.readthedocs.io or run

 $ classy docs