NASA Exoplanet & Planetary Candidate Catalog
1992–2025
Source, license and coverage
Supplier documentation. These claims are separate from the automated sample score. A listing edit date is not a data freshness date.
- License
- Not documented — confirm reuse terms with the seller
- Source / creator
- Supplier-cited: NASA Exoplanet Archive
- Collection method
- Supplier description: Harmonized catalog of 20,933 exoplanetary objects combining three authoritative NASA sources: the NASA Exoplanet Archive (6,153 confirmed exoplanets), the Kepler Cumulative KOI Table (6,867 unique Kepler Objects of Interest), and the TESS Objects of Interest catalog (7,913 TOIs). Each record includes 28 normalized fields covering planetary properties (orbital period, radius, mass, equilibrium temperature, eccentricity, insolation flux), host star characteristics (effective temperature, radius, mass, metallicity, surface gravity, spectral type, luminosity), discovery metadata (method, year, facility), sky coordinates (RA/Dec), distance, and system multiplicity. Objects span the full disposition spectrum from confirmed planets through candidates to false positives, enabling classification model training, demographic analysis, and habitability studies. Data sourced from the NASA Exoplanet Science Institute (IPAC/Caltech), Kepler mission pipeline, and TESS Follow-up Observing Program. Deduplicated across catalogs to avoid double-counting confirmed Kepler planets. Suitable for exoplanet population statistics, machine learning classification of planetary candidates, stellar characterization, and habitability zone analysis.
- Coverage / snapshot
- 1992–2025
- Data last updated
- Not documented
- Update schedule
- Not documented
Source attribution is supplier-reported. The source link identifies publisher documentation; it does not independently verify this uploaded extract.
Sample structure score: 83.4 / 100
This automated check describes the inspected sample, not factual accuracy, legal rights, representativeness, or the quality of the entire dataset. It is not a customer rating.
Assessed 10 sample records (CSV) on 2026-10-09. All records in the provided sample were checked.
| Check | Points | Evidence |
|---|---|---|
| Populated cells | 33.4 / 50 | 187 of 280 top-level cells contain a value. Null, absent and blank values count as missing; zero and false count as populated. |
| Consistent value types | 30 / 30 | 187 of 187 populated cells match their column's most common observed type. Types are inferred, not checked against real-world truth. |
| Consistent record shape | 20 / 20 | 10 of 10 records have the expected fields. CSV/TSV use the header width; JSON uses the union of observed keys. |
Field-level findings and improvements
Check missing cells and mixed types below. Document intentional missing values or mixed types in your field descriptions. Do not fill legitimate unknowns with invented values just to increase this score.
| Field | Missing cells | Most common type | Other populated types |
|---|---|---|---|
| object_name | 0 / 10 | string | 0 / 10 |
| host_star | 5 / 10 | string | 0 / 5 |
| source_catalog | 0 / 10 | string | 0 / 10 |
| status | 0 / 10 | string | 0 / 10 |
| discovery_method | 0 / 10 | string | 0 / 10 |
| discovery_year | 5 / 10 | number | 0 / 5 |
| discovery_facility | 0 / 10 | string | 0 / 10 |
| orbital_period_days | 0 / 10 | number | 0 / 10 |
| orbital_semi_major_axis_au | 8 / 10 | number | 0 / 2 |
| planet_radius_earth | 2 / 10 | number | 0 / 8 |
| planet_mass_earth | 9 / 10 | number | 0 / 1 |
| equilibrium_temp_k | 3 / 10 | number | 0 / 7 |
| orbital_eccentricity | 4 / 10 | number | 0 / 6 |
| insolation_flux_earth | 3 / 10 | number | 0 / 7 |
| stellar_effective_temp_k | 1 / 10 | number | 0 / 9 |
| stellar_radius_solar | 2 / 10 | number | 0 / 8 |
| stellar_mass_solar | 3 / 10 | number | 0 / 7 |
| stellar_metallicity_dex | 4 / 10 | number | 0 / 6 |
| stellar_surface_gravity_log | 1 / 10 | number | 0 / 9 |
| stellar_spectral_type | 10 / 10 | unknown | 0 / 0 |
| stellar_luminosity_log_solar | 10 / 10 | unknown | 0 / 0 |
| distance_pc | 5 / 10 | number | 0 / 5 |
| visual_magnitude | 1 / 10 | number | 0 / 9 |
| ra_deg | 0 / 10 | number | 0 / 10 |
| dec_deg | 0 / 10 | number | 0 / 10 |
| num_stars_in_system | 7 / 10 | number | 0 / 3 |
| num_planets_in_system | 7 / 10 | number | 0 / 3 |
| transit_duration_hours | 3 / 10 | number | 0 / 7 |
About this data
Harmonized catalog combining NASA Exoplanet Archive, Kepler, and TESS sources with 28 normalized fields per object: planetary properties (orbital period, radius, mass, equilibrium temperature, eccentricity, insolation flux), host star characteristics (effective temperature, radius, mass, metallicity, surface gravity, spectral type, luminosity), discovery metadata (method, year, facility), coordinates, distance, and multiplicity. Spans confirmed planets, candidates, and false positives across full disposition spectrum.
Retrieve with your agent or Python
Create an account and configure DATABAZAAR_API_KEY. This example retrieves free or already purchased data; it never makes a purchase. For a multi-file dataset, choose a file index from the manifest.
Download the Python examplepython3 retrieve-dataset.py 3ae48a0c-0e00-4b42-8f9b-90757642a2a9 --output dataset.bin
Full supplier documentation
Schema
| Name | Type | Description |
|---|---|---|
| object_name | string | |
| host_star | string | |
| source_catalog | string | |
| status | string | |
| discovery_method | string | |
| discovery_year | string | |
| discovery_facility | string | |
| orbital_period_days | string | |
| orbital_semi_major_axis_au | string | |
| planet_radius_earth | string | |
| planet_mass_earth | string | |
| equilibrium_temp_k | string | |
| orbital_eccentricity | string | |
| insolation_flux_earth | string | |
| stellar_effective_temp_k | string | |
| stellar_radius_solar | string | |
| stellar_mass_solar | string | |
| stellar_metallicity_dex | string | |
| stellar_surface_gravity_log | string | |
| stellar_spectral_type | string | |
| stellar_luminosity_log_solar | string | |
| distance_pc | string | |
| visual_magnitude | string | |
| ra_deg | string | |
| dec_deg | string | |
| num_stars_in_system | string | |
| num_planets_in_system | string | |
| transit_duration_hours | string |
Sample Data
Preview a sample of the data before downloading.
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For AI Agents
# 1. Add to your agent's MCP config (claude_desktop_config.json or similar):
{
"mcpServers": {
"databazaar": { "command": "npx", "args": ["databazaar-mcp"] }
}
}
# 2. Your agent can then call:
search_datasets({ query: "NASA Exoplanet & Planetary Can" })
// Found: 3ae48a0c-0e00-4b42-8f9b-90757642a2a9
get_download_url({ dataset_id: "3ae48a0c-0e00-4b42-8f9b-90757642a2a9" }) // free — sign in with MCP OAuth first# Free dataset — sign in or use your account API key: curl https://api.databazaar.io/datasets/3ae48a0c-0e00-4b42-8f9b-90757642a2a9/download-url -H "Authorization: Bearer $DATABAZAAR_API_KEY"