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Planets

All eight planets of the Solar System in one flat array, ordered by distance from the Sun. Each record captures the planet's classification (terrestrial, gas-giant, or ice-giant), mean volumetric radius in kilometres, mass in kilograms as a scientific-notation string, semi-major axis distance in astronomical units, known natural satellite count, and sidereal orbital period in Earth days — making it straightforward to build solar-system visualisations, educational tools, or unit-conversion references.

v1.0.0 MIT 8 records Updated 2026-10-05 stable Source:  NASA Planetary Fact Sheet

Quick fetch

Stable URL. CORS-enabled. No auth.

bash 
curl https://staticdata.dev/v1/planets.json

Or use as a typed import: import { planets } from "https://staticdata.dev/v1/planets.ts"

Formats

  • JSON 1.4 KB

    /v1/planets.json

    Open

    min: 1.0 KB · /v1/planets.min.json

  • CSV 468 B

    /v1/planets.csv

    Open
  • TypeScript 1.6 KB

    /v1/planets.ts

    export const planets

    type Planet = (typeof planets)[number]

    Open

Schema

Each record in the dataset has the following shape.

Schema
Field Type Description Example
name string IAU name of the planet Earth
type string Planet classification: terrestrial, gas-giant, or ice-giant terrestrial
massKg string Mass in kilograms as a scientific-notation string 5.972e+24
radiusKm number Mean volumetric radius in kilometres 6371
distanceAu number Semi-major axis distance from the Sun in astronomical units 1
moons number Count of confirmed natural satellites 1
orbitalPeriodDays number Sidereal orbital period in Earth days 365.25

Preview

First 8 records.

Data preview
nametypemassKgradiusKmdistanceAumoons
Mercuryterrestrial3.301e+232439.70.3870
Venusterrestrial4.867e+246051.80.7230
Earthterrestrial5.972e+24637111
Marsterrestrial6.417e+233389.51.5242
Jupitergas-giant1.898e+27699115.203115
Saturngas-giant5.683e+26582329.537293
Uranusice-giant8.682e+252536219.19129
Neptuneice-giant1.024e+262462230.06916

Showing 8 of 8. View full data:  JSON · CSV

Fetch examples

Drop-in snippets in five languages.

curl 
curl -sSL https://staticdata.dev/v1/planets.json | jq '.[0]'
JavaScript 
import type { Planet } from "https://staticdata.dev/v1/planets.ts";

const res = await fetch("https://staticdata.dev/v1/planets.min.json");
if (!res.ok) throw new Error(`Fetch failed: ${res.status}`);
const planets: Planet[] = await res.json();
console.log(planets[0]);
Python 
import urllib.request, json

with urllib.request.urlopen("https://staticdata.dev/v1/planets.min.json") as r:
    planets = json.load(r)

print(planets[0])
Go 
package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

func main() {
	resp, err := http.Get("https://staticdata.dev/v1/planets.min.json")
	if err != nil { panic(err) }
	defer resp.Body.Close()

	var data []map[string]any
	if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
		panic(err)
	}
	fmt.Println(data[0])
}
Rust 
use serde_json::Value;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let body = ureq::get("https://staticdata.dev/v1/planets.min.json").call()?.into_string()?;
    let data: Vec<Value> = serde_json::from_str(&body)?;
    println!("{:?}", data.first());
    Ok(())
}

Sources and methodology

Values are curated from the NASA Planetary Fact Sheet maintained by David R. Williams at the NASA Goddard Space Flight Center. Mass figures are given as scientific-notation strings (e.g. "5.972e+24") rather than raw floats to avoid JavaScript floating-point precision loss at these scales. Radii are mean volumetric radii in kilometres. Distance from the Sun is the semi-major axis of the orbit expressed in astronomical units (1 AU ≈ 149 597 870.7 km).

Planet type follows the IAU 2006 definition and common planetary-science usage: the four inner rocky worlds (Mercury through Mars) are terrestrial; Jupiter and Saturn, which are predominantly hydrogen and helium, are gas giants; and Uranus and Neptune, whose bulk compositions are dominated by water, methane, and ammonia ices, are ice giants. Moon counts reflect natural satellites with confirmed orbits as of October 2026 — Saturn leads with 293 and Jupiter follows with 115 after the Minor Planet Center announcements of 2025–2026; Uranus has 29 and Neptune 16. These counts change frequently as small irregular moons are confirmed.

Orbital periods are sidereal periods in Earth days. Records are ordered by increasing semi-major axis (distance from the Sun), which is the natural sort order for solar-system datasets and aligns with the conventional mnemonic ordering from Mercury to Neptune.

Versioning

URLs under /v1/ are stable: field names and types will not change in a way that breaks consumers. Values can be corrected or records added when the upstream source changes; schema-incompatible updates ship under a new version path. See the planets changelog for this dataset's history.

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