An interactive dashboard for exploring exoplanet data from the NASA Kepler mission. Built with Plotly Dash and data sourced from the Asterank Kepler API.
The application fetches live data from the Asterank Kepler API on startup. If the API is unavailable, it falls back to the bundled asterank_exo.csv file automatically. No manual configuration is required.
Create and activate a virtual environment, then install dependencies:
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
Run the application:
python3 app.py
Open http://127.0.0.1:8050 in your browser. Use the DEBUG=true environment variable to enable hot reload during development.
Shows the relationship between a planet's equilibrium temperature and its orbital distance from the host star. Planets are grouped by star size: small (below 80% of Sol radius), similar (80 to 120%), and bigger (above 120%).
Maps each planet by right ascension and declination. Point size represents planetary radius. Color indicates habitability status.
Distribution of the ratio between orbital distance and stellar radius. A vertical marker at 1.0 represents Earth's relative position. Planets are colored by habitability status.
Scatter plot of host star properties. Point size represents planetary radius. Useful for identifying which stellar environments contain potentially habitable planets.
Each planet receives one of three status labels based on its temperature and gravity profile:
- promising — optimal temperature and optimal gravity
- challenging — one condition is optimal, the other is borderline
- extreme — neither condition is suitable
exo-planets/
app.py Application entry point
layout.py Page layout definition
callbacks.py Dash callback functions
data/
loader.py API fetch with CSV fallback
processor.py Data transformations and classification
components/
charts.py Chart figure builders
controls.py Filter controls (slider, dropdown)
tables.py Data and reference tables
theme.py Shared chart template and color palette
assets/ CSS and static files
asterank_exo.csv Local CSV fallback dataset
| Field | Description |
|---|---|
| KOI | Kepler Object of Interest number |
| A | Semi-major axis in AU |
| RPLANET | Planetary radius in Earth radii |
| RSTAR | Stellar radius in Sol radii |
| TSTAR | Effective temperature of host star in Kelvin |
| TPLANET | Equilibrium temperature of planet in Kelvin |
| PER | Orbital period in days |
| MSTAR | Derived stellar mass in solar masses |
| RA | Right ascension (J2000) |
| DEC | Declination (J2000) |