← The evidence ledger
Evidence row 2201915
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://exoplanets-nasa.x402tookit.com/hill-radius
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 492e5dfae4324efabc4af09849c6f34c107f9a10c69eccf81970e1d688ed2aea
- Leaf
- 0xef78f3791ad8fe1204ca621d62a87926fc2af798632995c3c49e3042f2168d88
What was observed
{
"endpoints": [
[
"x402",
"https://exoplanets-nasa.x402tookit.com/hill-radius"
]
],
"name": "NASA Exoplanets",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Hill radius of a planet in AU and km from its mass, orbit, eccentricity and star mass, with the stable-moon region.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"eccentricity": 0.0167,
"massUnit": "earth",
"orbitAu": 1,
"planetMass": 1,
"starMassSolar": 1
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:48:42.237Z",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"hillRadiusAu": 0.0098368,
"hillRadiusInEarthRadii": 230.7,
"hillRadiusInJupiterRadii": 20.58,
"hillRadiusKm": 1471600,
"notChecked": [
"the real stability of a moon: tides, the planet's spin and other bodies matter, and close-in planets lose moons to tidal decay",
"other planets in the system",
"…1 more"
],
"planetMassSolar": 0.0000030035,
"reasons": [
"Hill radius = a (1 - e) (m / 3M)^(1/3).",
"Stable satellite orbits extend to about 0.49 of the Hill radius for prograde moons and about 0.93 for retrograde moons (Domingos et al. 2006)."
],
"source": "computed locally",
"stableProgradeAu": 0.004815,
"stableProgradeKm": 720300,
"stableRetrogradeAu": 0.009157,
"stableRetrogradeKm": 1370000,
"summary": "Hill radius 0.009837 au (1472000 km) for a 1 earth-mass planet at 1 au around a 1 solar-mass star (eccentricity 0.0167). Prograde moons are stable out to roughly 720000 km.",
"verdict": "COMPUTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
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"type": "number"
},
"massUnit": {
"description": "earth (default) or jupiter",
"type": "string"
},
"orbitAu": {
"description": "Semi-major axis in AU, 0.001 to 10000",
"type": "number"
},
"planetMass": {
"description": "Planet mass value, 0.001 to 100000",
"type": "number"
},
"starMassSolar": {
"description": "Star mass in solar masses, 0.05 to 100 (default 1)",
"type": "number"
}
},
"required": [
"planetMass",
"orbitAu"
],
"type": "object"
},
"type": {
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"type": "string"
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},
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"type": "object"
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"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"hillRadiusAu": {
"type": [
"null",
"number"
]
},
"hillRadiusInEarthRadii": {
"type": [
"null",
"number"
]
},
"hillRadiusInJupiterRadii": {
"type": [
"null",
"number"
]
},
"hillRadiusKm": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
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},
"type": [
"array",
"null"
]
},
"planetMassSolar": {
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"null",
"number"
]
},
"reasons": {
"items": {
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},
"type": [
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"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"stableProgradeAu": {
"type": [
"null",
"number"
]
},
"stableProgradeKm": {
"type": [
"null",
"number"
]
},
"stableRetrogradeAu": {
"type": [
"null",
"number"
]
},
"stableRetrogradeKm": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:53:11.698Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:53:11.528Z"
},
"resource": "https://exoplanets-nasa.x402tookit.com/hill-radius",
"serviceName": "NASA Exoplanets",
"tags": [
"exoplanet",
"orbit",
"moon",
"astronomy",
"calculator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Hill radius of a planet in AU and km from its mass, orbit, eccentricity and star mass, with the stable-moon region."
}What the leaf hashes
{"body":"492e5dfae4324efabc4af09849c6f34c107f9a10c69eccf81970e1d688ed2aea","id":2201915,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810184180,"prev":null,"subject":"x402_bazaar:https://exoplanets-nasa.x402tookit.com/hill-radius","subject_kind":"source_record"}Proof
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af