Update launch vehicles database: 206 vehicles

README.md

@@ -3,12 +3,7 @@ license: cc0-1.0
 pretty_name: "Launch Vehicles Database"
 language:
   - en
-description: >-
-  Orbital and suborbital launch vehicles from around the world, sourced from Wikidata.
-  210 vehicles from 11 countries with dimensions, payload capacity,
-  flight history, and operational status.
-size_categories:
-  - n<1K
+description: "Orbital and suborbital launch vehicles from around the world, sourced from Wikidata. Covers every space launch vehicle recorded in Wikidata's structured knowledge base, including historical rockets, a"
 task_categories:
   - tabular-classification
 tags:
@@ -20,60 +15,71 @@ tags:
   - open-data
   - tabular-data
   - parquet
+size_categories:
+  - n<1K
 configs:
   - config_name: default
-    default: true
     data_files:
       - split: train
-        path: data/launch-vehicles.parquet
+        path: data/launch_vehicles.parquet
+    default: true
 ---
 
 # 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 — **210** rockets and boosters
-from **11** countries, sourced from [Wikidata](https://www.wikidata.org/).
+<div align="center">
+  <img src="banner.jpg" alt="An orbital sunrise illuminates the Earth's atmosphere, seen from the ISS" width="400">
+  <p><em>Credit: NASA</em></p>
+</div>
+
+
+*Part of a [dataset collection](https://huggingface.co/collections/juliensimon/orbital-mechanics-datasets-69c24caca4ab3934c9856994) on Hugging Face.*
 
 ## 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.
+Orbital and suborbital launch vehicles from around the world, sourced from Wikidata. Covers every space launch vehicle recorded in Wikidata's structured knowledge base, including historical rockets, active workhorses, and vehicles under development.
 
-Sourced from Wikidata's structured knowledge base (class Q697175: space launch vehicle),
-maintained by the WikiProject Spaceflight community.
+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 draws from Wikidata's community-curated records (class Q697175: space launch vehicle), maintained by the WikiProject Spaceflight community. It includes physical dimensions, payload capacities, flight history dates, and operational status.
 
-> **Note:** Wikidata coverage varies — some vehicles lack physical specs or payload data.
-> Columns with <5% data coverage are automatically dropped during pipeline processing.
+Wikidata coverage varies -- some vehicles lack physical specs or payload data. Columns with less than 5% data coverage are automatically dropped during pipeline processing.
 
-## 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) |
-| `payload_leo_kg` | float | Payload capacity to LEO (kg) |
+This dataset is suitable for **tabular classification** tasks.
 
-Additional columns (diameter, mass, first_flight, etc.) appear when Wikidata coverage exceeds 5%.
+## Schema
+
+| Column | Type | Description | Sample | Null % |
+|--------|------|-------------|--------|--------|
+| `wikidata_id` | str | Wikidata entity ID (e.g. 'Q14522') linking to https://www.wikidata.org/wiki/Q14522; use for enrichment joins with other Wikidata-sourced datasets | Q377174 | 0.0% |
+| `name` | str | Primary name of the launch vehicle (e.g. 'Saturn V', 'Falcon 9'); canonical English form as recorded in Wikidata | 2003 Alcântara VLS accident | 0.0% |
+| `manufacturer` | str | Organization that designed and built the vehicle (e.g. 'Boeing', 'SpaceX', 'Roscosmos'); null if manufacturer information is absent from Wikidata | Rockwell International | 40.8% |
+| `country` | str | Country of origin using full English name (e.g. 'United States of America', 'Russia', 'China'); reflects the operating nation at time of primary use | Iraq | 36.9% |
+| `height_m` | float64 | Total vehicle height from base to payload fairing tip, in metres; null when not recorded in Wikidata; tallest vehicles exceed 100 m (Saturn V: 110.6 m) | 25.0 | 94.2% |
+| `mass_kg` | float64 | Gross liftoff mass (fully fueled with payload) in kilograms; null when not recorded; ranges from ~10,000 kg (small launchers) to ~3,000,000 kg (Saturn V) | 48000.0 | 94.2% |
+| `payload_leo_kg` | float64 | Maximum payload mass deliverable to low Earth orbit (approx 200-2000 km altitude) in kilograms; null for vehicles whose LEO capacity is unrecorded or not applicable | 300.0 | 88.3% |
+| `first_flight` | str | Date of maiden flight in ISO 8601 format (YYYY-MM-DD); null for vehicles that never flew or where the date is unrecorded in Wikidata | 1985-10-03 | 93.2% |
 
 ## Quick stats
 
-- **210** launch vehicles from **11** countries
+- **206** launch vehicles from **10** 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)
+- Heaviest LEO payload: Delta IV Heavy (13,810 kg)
+- Top countries: United States (100), Soviet Union (14), Russia (5), People's Republic of China (3), South Korea (2)
 
 ## Usage
 
 ```python
 from datasets import load_dataset
 
+ds = load_dataset("juliensimon/launch-vehicles", split="train")
+df = ds.to_pandas()
+```
+
+```python
+from datasets import load_dataset
+
 ds = load_dataset("juliensimon/launch-vehicles", split="train")
 df = ds.to_pandas()
 
@@ -84,45 +90,55 @@ print(df[["name", "country", "manufacturer"]].head(20))
 if "height_m" in df.columns:
     tall = df.dropna(subset=["height_m"]).nlargest(10, "height_m")
     print(tall[["name", "country", "height_m"]])
+
+# Payload capacity distribution
+import matplotlib.pyplot as plt
+leo = df.dropna(subset=["payload_leo_kg"])
+plt.hist(leo["payload_leo_kg"], bins=30, edgecolor="black", alpha=0.7)
+plt.xlabel("Payload to LEO (kg)")
+plt.ylabel("Number of Vehicles")
+plt.title("Launch Vehicle LEO Payload Distribution")
+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).
+https://www.wikidata.org/wiki/Q697175
 
-## Update schedule
+## Related datasets
 
-Quarterly (January, April, July, October). Re-run manually to pick up newly added vehicles.
+- [juliensimon/space-missions](https://huggingface.co/datasets/juliensimon/space-missions)
 
-## Related datasets
+- [juliensimon/space-launch-log](https://huggingface.co/datasets/juliensimon/space-launch-log)
+
+- [juliensimon/spacecraft-database](https://huggingface.co/datasets/juliensimon/spacecraft-database)
+
+- [juliensimon/constellation-census](https://huggingface.co/datasets/juliensimon/constellation-census)
+
+- [juliensimon/gcat](https://huggingface.co/datasets/juliensimon/gcat)
 
-- [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
+- [juliensimon/gcat-satcat](https://huggingface.co/datasets/juliensimon/gcat-satcat)
 
-## Pipeline
+- [juliensimon/launch-cost](https://huggingface.co/datasets/juliensimon/launch-cost)
 
-Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)
+> If you find this dataset useful, please consider [giving it a like](https://huggingface.co/datasets/juliensimon/launch-vehicles) on Hugging Face. It helps others discover it.
 
-## Support
+## About the author
 
-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.
+Created by [Julien Simon](https://julien.org) — AI Operating Partner at Fortino Capital. Part of the [Space Datasets](https://julien.org/datasets) collection.
 
 ## Citation
 
 ```bibtex
 @dataset{launch_vehicles,
-  author = {Simon, Julien},
   title = {Launch Vehicles Database},
+  author = {juliensimon},
   year = {2026},
-  publisher = {Hugging Face},
   url = {https://huggingface.co/datasets/juliensimon/launch-vehicles},
-  note = {Sourced from Wikidata (CC0)}
+  publisher = {Hugging Face}
 }
 ```
 
 ## License
 
-[CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/) (Wikidata content is public domain)
+[CC0-1.0](https://creativecommons.org/licenses/by/4.0/)

data/launch_vehicles.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8db40db7f09dce4633438efe0f490dfeb2c7b2a841a9482254de54e2d45ea06c
+size 8642