juliensimon/nasa-exoplanets

---
license: cc-by-4.0
pretty_name: "NASA Exoplanet Archive"
language:
- en
description: "Confirmed exoplanets with orbital, stellar, and discovery parameters from the NASA Exoplanet Archive."
task_categories:
- tabular-classification
- tabular-regression
tags:
- exoplanet
- astronomy
- nasa
- transit
- radial-velocity
- kepler
- tess
- open-data
size_categories:
- 1K<n<10K
---

# NASA Exoplanet Archive


All confirmed exoplanets from the [NASA Exoplanet Archive](https://exoplanetarchive.ipac.caltech.edu/),
with orbital parameters, stellar properties, and discovery metadata. Currently **6,150** confirmed planets.

## Dataset description

The NASA Exoplanet Archive is the authoritative database of confirmed exoplanets, maintained by
Caltech/IPAC under contract with NASA. Each entry represents a confirmed planet with its best-available
physical and orbital parameters, host star properties, and discovery information. This dataset uses the
Planetary Systems (`ps`) table with `default_flag=1` to select one row per planet with the default
parameter set.

## Schema

| Column | Type | Description |
|--------|------|-------------|
| `pl_name` | string | Planet name (e.g. "Kepler-22 b", "TRAPPIST-1 e") |
| `hostname` | string | Host star name |
| `discoverymethod` | string | Discovery method (Transit, Radial Velocity, etc.) |
| `disc_year` | Int64 | Year of discovery |
| `disc_facility` | string | Discovery facility name |
| `pl_orbper` | float | Orbital period in days |
| `pl_rade` | float | Planet radius in Earth radii |
| `pl_bmasse` | float | Planet mass in Earth masses |
| `pl_eqt` | float | Equilibrium temperature in K |
| `pl_orbsmax` | float | Semi-major axis in AU |
| `pl_orbeccen` | float | Orbital eccentricity |
| `st_teff` | float | Stellar effective temperature in K |
| `st_rad` | float | Stellar radius in solar radii |
| `st_mass` | float | Stellar mass in solar masses |
| `sy_dist` | float | Distance in parsecs |
| `sy_vmag` | float | V-band magnitude |
| `ra` | float | Right ascension in degrees |
| `dec` | float | Declination in degrees |
| `rowupdate` | string | Date of last row update |

## Quick stats

- **6,150** confirmed exoplanets
- Most recent discovery: **DMPP-8 b** (2026)

### By discovery method

| Method | Count |
|--------|-------|
| Transit | 4,517 |
| Radial Velocity | 1,182 |
| Microlensing | 275 |
| Imaging | 94 |
| Transit Timing Variations | 39 |
| Eclipse Timing Variations | 17 |
| Orbital Brightness Modulation | 9 |
| Pulsar Timing | 8 |

### Recent discoveries by year

| Year | Count |
|------|-------|
| 2026 | 63 |
| 2025 | 243 |
| 2024 | 259 |
| 2023 | 324 |
| 2022 | 369 |
| 2021 | 564 |
| 2020 | 234 |
| 2019 | 196 |
| 2018 | 315 |
| 2017 | 152 |

## Usage

```python
from datasets import load_dataset

ds = load_dataset("juliensimon/nasa-exoplanets", split="train")
df = ds.to_pandas()

# Earth-like candidates: rocky, in habitable zone
habitable = df[
(df["pl_rade"] < 1.6) &
(df["pl_eqt"] > 200) & (df["pl_eqt"] < 310)
]
print(f"{len(habitable)} potentially habitable planets")

# Transit vs radial velocity discoveries over time
transit = df[df["discoverymethod"] == "Transit"]
rv = df[df["discoverymethod"] == "Radial Velocity"]

# Planets by discovery facility
top_facilities = df["disc_facility"].value_counts().head(10)
```

## Data source

All data comes from the [NASA Exoplanet Archive](https://exoplanetarchive.ipac.caltech.edu/),
maintained by Caltech/IPAC under contract with NASA. Data is queried via the TAP API using
the Planetary Systems table.

## Update schedule

Weekly on Monday at 16:00 UTC via [GitHub Actions](https://github.com/juliensimon/space-datasets).

## Related datasets

- [space-track-satcat](https://huggingface.co/datasets/juliensimon/space-track-satcat) — NORAD Satellite Catalog
- [space-launch-log](https://huggingface.co/datasets/juliensimon/space-launch-log) — Global launch history from GCAT

## Pipeline

Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)

## Citation

```bibtex
@dataset{nasa_exoplanets,
author = {Simon, Julien},
title = {NASA Exoplanet Archive},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/juliensimon/nasa-exoplanets},
note = {Based on data from the NASA Exoplanet Archive, operated by Caltech/IPAC}
}
```

## License

[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)

---
license: CC BY 4.0（知识共享署名4.0国际许可协议）
pretty_name: "NASA系外行星档案（NASA Exoplanet Archive）"
language:
- en
description: "收录来自NASA系外行星档案（NASA Exoplanet Archive）的已确认系外行星数据，包含轨道参数、恒星属性与发现相关参数。"
task_categories:
- tabular-classification
- tabular-regression
tags:
- 系外行星（exoplanet）
- 天文学（astronomy）
- NASA（nasa）
- 凌星法（transit）
- 视向速度法（radial-velocity）
- 开普勒（kepler）
- TESS（tess）
- 开放数据（open-data）
size_categories:
- 1K<n<10K
---

# NASA系外行星档案（NASA Exoplanet Archive）


本数据集收录来自[NASA系外行星档案](https://exoplanetarchive.ipac.caltech.edu/)的全部已确认系外行星数据，包含轨道参数、恒星属性与发现元数据，目前共收录**6150颗**已确认系外行星。

## 数据集说明

NASA系外行星档案是由加州理工学院IPAC中心受NASA合同委托维护的权威已确认系外行星数据库。每条数据对应一颗已确认系外行星，包含当前可获取的最优物理与轨道参数、宿主恒星属性以及发现相关信息。本数据集选取行星系统表（Planetary Systems，`ps`）中`default_flag=1`的条目，为每颗行星选取一套默认参数对应的单行数据。

## 数据结构

| 列名 | 数据类型 | 描述 |
|--------|------|-------------|
| `pl_name` | string | 行星名称（例如"开普勒（Kepler）-22 b"、"TRAPPIST-1 e"） |
| `hostname` | string | 宿主恒星名称 |
| `discoverymethod` | string | 发现方法（凌星法（transit）、视向速度法（radial velocity）等） |
| `disc_year` | Int64 | 发现年份 |
| `disc_facility` | string | 发现设备名称 |
| `pl_orbper` | float | 轨道周期，单位：天 |
| `pl_rade` | float | 行星半径，单位：地球半径 |
| `pl_bmasse` | float | 行星质量，单位：地球质量 |
| `pl_eqt` | float | 平衡温度，单位：开尔文（K） |
| `pl_orbsmax` | float | 半长轴，单位：天文单位（AU） |
| `pl_orbeccen` | float | 轨道偏心率 |
| `st_teff` | float | 恒星有效温度，单位：开尔文（K） |
| `st_rad` | float | 恒星半径，单位：太阳半径 |
| `st_mass` | float | 恒星质量，单位：太阳质量 |
| `sy_dist` | float | 距离，单位：秒差距（pc） |
| `sy_vmag` | float | V波段星等 |
| `ra` | float | 赤经，单位：度 |
| `dec` | float | 赤纬，单位：度 |
| `rowupdate` | string | 最后更新日期 |

## 快速统计

- **6150颗** 已确认系外行星
- 最新发现行星：**DMPP-8 b**（2026年）

### 按发现方法分类

| 发现方法 | 数量 |
|--------|-------|
| 凌星法（transit） | 4517 |
| 视向速度法（radial velocity） | 1182 |
| 微引力透镜法（microlensing） | 275 |
| 直接成像法（imaging） | 94 |
| 凌星计时变分法（transit timing variations） | 39 |
| 食计时变分法（eclipse timing variations） | 17 |
| 轨道亮度调制法（orbital brightness modulation） | 9 |
| 脉冲星计时法（pulsar timing） | 8 |

### 按年份统计的新发现行星

| 年份 | 数量 |
|------|-------|
| 2026 | 63 |
| 2025 | 243 |
| 2024 | 259 |
| 2023 | 324 |
| 2022 | 369 |
| 2021 | 564 |
| 2020 | 234 |
| 2019 | 196 |
| 2018 | 315 |
| 2017 | 152 |

## 使用示例

python
from datasets import load_dataset

ds = load_dataset("juliensimon/nasa-exoplanets", split="train")
df = ds.to_pandas()

# Earth-like candidates: rocky, in habitable zone
habitable = df[
(df["pl_rade"] < 1.6) &
(df["pl_eqt"] > 200) & (df["pl_eqt"] < 310)
]
print(f"{len(habitable)} potentially habitable planets")

# Transit vs radial velocity discoveries over time
transit = df[df["discoverymethod"] == "Transit"]
rv = df[df["discoverymethod"] == "Radial Velocity"]

# Planets by discovery facility
top_facilities = df["disc_facility"].value_counts().head(10)

## 数据来源

所有数据均来自[NASA系外行星档案](https://exoplanetarchive.ipac.caltech.edu/)，由加州理工学院IPAC中心受NASA合同委托维护。本数据集通过TAP API接口查询行星系统表获取数据。

## 更新计划

每周一16:00 UTC通过[GitHub Actions](https://github.com/juliensimon/space-datasets)自动更新。

## 相关数据集

- [space-track-satcat](https://huggingface.co/datasets/juliensimon/space-track-satcat) — NORAD卫星目录
- [space-launch-log](https://huggingface.co/datasets/juliensimon/space-launch-log) — 来自GCAT的全球发射历史记录

## 数据流水线

源代码：[juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)

## 引用格式

bibtex
@dataset{nasa_exoplanets,
author = {Simon, Julien},
title = {NASA Exoplanet Archive},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/juliensimon/nasa-exoplanets},
note = {Based on data from the NASA Exoplanet Archive, operated by Caltech/IPAC}
}

## 许可协议

[知识共享署名4.0国际许可协议（CC BY 4.0）](https://creativecommons.org/licenses/by/4.0/)