MCP serverio.github.cyanheads/astronomy-mcp-server

Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.

UNRATEDActivestreamable-httpastronomy.caseyjhand.com

Overview

Score?

UNRATED 0.672

of what a free look can see, on 30 looks

Looks

last 17 hr ago

Tools

changed 10 days ago

More info

URL

astronomy.caseyjhand.com/mcp

streamable-http

Says it is

astronomy-mcp-server 0.4.0

protocol 2025-06-18

In the record since

32 days ago

Among servers18,413 with a card

0median 0.606 · this server 0.672 · highest on record 0.8561

Toolsfrom sha256:6ec5267813…59597f · +0 −0 10 days ago

The tools this server lists, read out of the definition it returned
Tool	Schema
astronomy_find_events Search forward from a start time for the next occurrences of one sky-event class, selected by the `event` enum: solar_eclipse, lunar_eclipse, equinox, solstice, moon_quarter, oppos	input · output
astronomy_get_ephemeris Fetch a time-series ephemeris for a small body (asteroid or comet) or spacecraft from JPL Horizons — RA/Dec, distance, and apparent magnitude over a span, optionally with observer-	input · output
astronomy_get_moon_phase Report the Moon phase for an instant: illuminated fraction, phase name, synodic age in days since the new moon, phase longitude (the Moon–Sun ecliptic-longitude difference, 180° at	input · output
astronomy_get_rise_set Compute rise, set, and culmination (transit) times for a body at an observer location, plus the maximum altitude at culmination. For the Sun, also returns the three twilight pairs	input · output
astronomy_get_satellite_passes Predict visible passes of a satellite (e.g. the ISS, NORAD 25544) over an observer in the next `days`. Identify the satellite by exactly one of `norad_id` or `name` — supplying bot	input · output
astronomy_get_sky_position Compute the apparent topocentric position of one solar-system body (sun, moon, mercury through neptune, pluto) or a named bright star for an observer location and instant. Returns	input · output
astronomy_list_visible The one-call "what is up right now" answer. For an observer location and instant, iterate every naked-eye solar-system body (and, with include_stars, the bundled bright stars), com	input · output

Verify it yourselfnpx teppi-check https://astronomy.caseyjhand.com/mcpcurl -s https://api.teppi.xyz/v1/trust/mcp/mcs_01M1FZ2ES0VV8CRS5RQ89D3Y5F