2s.io

2s.io
Category
Service
Network
Avg / request
$0.001 – $0.018
Endpoints
150

Service overview

What is 2s.io?

Compute where any asteroid or comet is in the sky and whether you can see it. Give a body (designation/number/name, e.g. "433 Eros", "Ceres", "2024 YR4") and optionally your lat/lon and a time (ISO, default now). Returns the body's identity (NEO/PHA flags, orbit class, absolute magnitude H), its geocentric right ascension + declination, the constellation it's in, geocentric + heliocentric distance (AU), solar phase angle, and its apparent visual magnitude (IAU H-G model — how bright it appears now). With lat/lon it adds altitude/azimuth, whether it's above your horizon, a visible-now flag (up AND sky dark), and the best viewing window in the next 24 hours (when it's highest during darkness). Orbital position is computed locally from JPL elements — VALIDATED against JPL Horizons to <0.1 arcminute. Stargazing, astrophotography planning, occultation/observation prep. For the body's static physical + orbital params see /api/space/body.

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Example request
npx awal x402 pay "https://2s.io/api/agent/marketplace/discover" \
  --query '{
  "capabilities": "{capabilities}",
  "q": "{q}"
}'
What you get back
{
  "endpoint": "GET /api/agent/marketplace/discover",
  "paid": true,
  "query": "example input",
  "result": {
    "value": "Structured response from the service."
  }
}

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