Update launch vehicles database: 209 vehicles

README.md

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+---
+license: cc0-1.0
+pretty_name: "Launch Vehicles Database"
+language:
+  - en
+description: >-
+  Orbital and suborbital launch vehicles from around the world, sourced from Wikidata.
+  209 vehicles from 11 countries with dimensions, payload capacity,
+  flight history, and operational status.
+size_categories:
+  - n<1K
+task_categories:
+  - tabular-classification
+tags:
+  - space
+  - rockets
+  - launch-vehicles
+  - orbital-mechanics
+  - wikidata
+  - open-data
+  - tabular-data
+  - parquet
+configs:
+  - config_name: default
+    data_files:
+      - split: train
+        path: data/launch-vehicles.parquet
+---
+
+# Launch Vehicles Database
+
+*Part of the [Orbital Mechanics Datasets](https://huggingface.co/collections/juliensimon/orbital-mechanics-datasets-69c24caca4ab3934c9856994) collection on Hugging Face.*
+
+Complete database of orbital and suborbital launch vehicles — **209** rockets and boosters
+from **11** countries, sourced from [Wikidata](https://www.wikidata.org/).
+
+## Dataset description
+
+From the German V-2 through the Saturn V to the Falcon 9 and Starship, launch vehicles have
+defined humanity's access to space. This dataset covers every orbital and suborbital launch
+vehicle recorded in Wikidata, including historical rockets, active workhorses, and vehicles
+under development.
+
+Each entry includes physical dimensions (height, diameter, liftoff mass), payload capacity
+to low Earth orbit (LEO) and geostationary transfer orbit (GTO), first and last flight dates,
+number of stages, operational status, manufacturer, and country of origin.
+
+This enables analysis of global launch capability, rocket engineering evolution over decades,
+national space programme comparisons, and payload capacity trends across generations of vehicles.
+
+Sourced from Wikidata's structured knowledge base (class Q697175: space launch vehicle),
+maintained by the WikiProject Spaceflight community.
+
+## Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| `wikidata_id` | string | Wikidata entity ID (e.g. Q697175) |
+| `name` | string | Vehicle name |
+| `manufacturer` | string | Manufacturer organisation |
+| `country` | string | Country of origin |
+| `height_m` | float | Total height (metres) |
+| `diameter_m` | float | Core diameter (metres) |
+| `mass_kg` | float | Liftoff mass (kg) |
+| `payload_leo_kg` | float | Payload capacity to LEO (kg) |
+| `payload_gto_kg` | float | Payload capacity to GTO (kg) |
+| `first_flight` | string | Date of first flight (YYYY-MM-DD) |
+| `last_flight` | string | Date of last flight if retired (YYYY-MM-DD) |
+| `num_stages` | int | Number of stages |
+| `status` | string | Operational status (active/retired/in development) |
+
+## Quick stats
+
+- **209** launch vehicles from **11** countries
+- **0** active, **0** retired
+- Tallest vehicle: Long March 10 (90.0 m)
+- Heaviest LEO payload: Delta IV Heavy (28,370 kg)
+- Top countries: United States (99), Soviet Union (14), United Kingdom (6), Russia (5), People's Republic of China (2)
+
+## Usage
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset("juliensimon/launch-vehicles", split="train")
+df = ds.to_pandas()
+
+# Active vehicles by country
+active = df[df["status"].str.lower() == "active"]
+print(active["country"].value_counts().head(10))
+
+# Heaviest LEO payload capacity
+top_leo = df.nlargest(10, "payload_leo_kg")[["name", "country", "payload_leo_kg"]]
+print(top_leo)
+
+# Vehicles by first flight decade
+df["decade"] = (df["first_flight"].str[:4].astype(float) // 10 * 10).astype("Int64")
+print(df["decade"].value_counts().sort_index())
+
+# Height vs payload correlation
+import matplotlib.pyplot as plt
+subset = df.dropna(subset=["height_m", "payload_leo_kg"])
+plt.scatter(subset["height_m"], subset["payload_leo_kg"])
+plt.xlabel("Height (m)")
+plt.ylabel("LEO Payload (kg)")
+plt.title("Rocket Height vs Payload Capacity")
+plt.show()
+```
+
+## Data source
+
+[Wikidata](https://www.wikidata.org/) SPARQL endpoint. Launch vehicles identified as
+instances of Q697175 (space launch vehicle) and its subclasses. Data is community-curated
+by [WikiProject Spaceflight](https://www.wikidata.org/wiki/Wikidata:WikiProject_Spaceflight).
+
+## Update schedule
+
+Quarterly (January, April, July, October). Re-run manually to pick up newly added vehicles.
+
+## Related datasets
+
+- [space-missions](https://huggingface.co/datasets/juliensimon/space-missions) — Crewed and robotic space missions
+- [launch-log](https://huggingface.co/datasets/juliensimon/launch-log) — McDowell orbital launch log
+- [spacecraft-database](https://huggingface.co/datasets/juliensimon/spacecraft-database) — Spacecraft catalogue
+
+## Pipeline
+
+Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)
+
+## Support
+
+If you find this dataset useful, please give it a ❤️ on the [dataset page](https://huggingface.co/datasets/juliensimon/launch-vehicles) and share feedback in the Community tab! Also consider giving a ⭐️ to the [space-datasets](https://github.com/juliensimon/space-datasets) repo.
+
+## Citation
+
+```bibtex
+@dataset{launch_vehicles,
+  author = {Simon, Julien},
+  title = {Launch Vehicles Database},
+  year = {2026},
+  publisher = {Hugging Face},
+  url = {https://huggingface.co/datasets/juliensimon/launch-vehicles},
+  note = {Sourced from Wikidata (CC0)}
+}
+```
+
+## License
+
+[CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/) (Wikidata content is public domain)

data/launch-vehicles.parquet

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