Perigee

io.github.dlamarre-dev/perigeeVersion 1.10.1

Positions, distances, mission facts and 3D views of objects orbiting the Earth, Moon, Mars and Sun.

Status

Responds305 msNov 14, 2026, 14:49 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:49 UTC
Latency: 305 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://perigee-mcp.perigeeinfo.workers.dev/mcpResponds305 msNov 14, 2026, 14:49 UTC

No sign-in

Claude Code

claude mcp add --transport http perigee https://perigee-mcp.perigeeinfo.workers.dev/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: perigee
Remote MCP server URL: https://perigee-mcp.perigeeinfo.workers.dev/mcp

Cursor

{
  "mcpServers": {
    "perigee": {
      "url": "https://perigee-mcp.perigeeinfo.workers.dev/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"perigee","type":"http","url":"https://perigee-mcp.perigeeinfo.workers.dev/mcp"}'

Streamable HTTP

npm: perigee-mcp 1.10.1

Package only

npm (npx)

claude mcp add perigee -- npx -y perigee-mcp@1.10.1

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Tools

19 tools

Tools of Perigee
	Description		Read-only	Idempotent	Open world
`perigee_about`What every answer rests on: data sources and when they were fetched, the models and their typical accuracy, catalogue sizes, frame, attribution and the educational-use disclaimer.	What every answer rests on: data sources and when they were fetched, the models and their typical accuracy, catalogue sizes, frame, attribution and the educational-use disclaimer.	Not declared	Yes	Not declared	Yes
`perigee_close_approach`The closest distance between two objects in space over a period (default 1 day, at most 1): when, how close (timed to a fraction of a second) and, for two Earth satellites, how fast they pass each other. For education only: public orbits are not precise enough for collision avoidance, and the answer says so.	The closest distance between two objects in space over a period (default 1 day, at most 1): when, how close (timed to a fraction of a second) and, for two Earth satellites, how fast they pass each other. For education only: public orbits are not precise enough for collision avoidance, and the answer says so.	Not declared	Yes	Not declared	Yes
`perigee_define`Student-level definitions (secondary school) of the terms shown in Perigee: NORAD number, COSPAR id, apogee and perigee, inclination, orbital period, element epoch, ephemeris window, phase… Without a term, lists them all.	Student-level definitions (secondary school) of the terms shown in Perigee: NORAD number, COSPAR id, apogee and perigee, inclination, orbital period, element epoch, ephemeris window, phase… Without a term, lists them all.	Not declared	Yes	Not declared	No
`perigee_describe_view`Turns a Perigee link or embed URL (from perigee_view or a shared link) into words: a one-sentence alternative text for the image or iframe, and a description for lesson notes (which view, the selected object, where it is and how reliable its position is, the date and speed of time, the frame, the filters and what is hidden). The camera framing is not in the link.	Turns a Perigee link or embed URL (from perigee_view or a shared link) into words: a one-sentence alternative text for the image or iframe, and a description for lesson notes (which view, the selected object, where it is and how reliable its position is, the date and speed of time, the frame, the filters and what is hidden). The camera framing is not in the link.	Not declared	Yes	Not declared	Yes
`perigee_distance`Centre-to-centre distance between two objects at a date (km and astronomical units) and the light travel time, with the provenance of both positions. Example: from "earth" to "mars".	Centre-to-centre distance between two objects at a date (km and astronomical units) and the light travel time, with the provenance of both positions. Example: from "earth" to "mars".	Not declared	Yes	Not declared	Yes
`perigee_distance_series`Distances between two objects sampled evenly over a period (for a table or a chart), with the closest and farthest samples. The step limits their precision: use more steps for a precise closest approach.	Distances between two objects sampled evenly over a period (for a table or a chart), with the closest and farthest samples. The step limits their precision: use more steps for a precise closest approach.	Not declared	Yes	Not declared	Yes
`perigee_events`Events over a period (default: the next 30 days, at most 31): Moon phases (super and micro full Moons), lunar perigee and apogee, lunar and solar eclipses (contact times; with a place: how they look from there, with the duration of totality or annularity and the altitude of the Sun or the Moon), equinoxes and solstices, the Earth's perihelion and aphelion, planet oppositions, conjunctions and greatest elongations, and the next key events of the missions (flybys, arrivals, launches) from Perigee's catalogue.	Events over a period (default: the next 30 days, at most 31): Moon phases (super and micro full Moons), lunar perigee and apogee, lunar and solar eclipses (contact times; with a place: how they look from there, with the duration of totality or annularity and the altitude of the Sun or the Moon), equinoxes and solstices, the Earth's perihelion and aphelion, planet oppositions, conjunctions and greatest elongations, and the next key events of the missions (flybys, arrivals, launches) from Perigee's catalogue.	Not declared	Yes	Not declared	No
`perigee_find`Looks up objects by name or identifier (English or French, accents optional): planets, moons, missions beyond Earth orbit, featured science satellites, any active Earth satellite (by name, NORAD or COSPAR id), landing and launch sites, named stars. Returns ids for the other tools.	Looks up objects by name or identifier (English or French, accents optional): planets, moons, missions beyond Earth orbit, featured science satellites, any active Earth satellite (by name, NORAD or COSPAR id), landing and launch sites, named stars. Returns ids for the other tools.	Not declared	Yes	Not declared	Yes
`perigee_ground_track`The path on the ground below an Earth satellite over one or two orbits: a list of points (time, latitude, longitude, height) and a GeoJSON MultiLineString split at the antimeridian, ready for a map. Up to 360 points.	The path on the ground below an Earth satellite over one or two orbits: a list of points (time, latitude, longitude, height) and a GeoJSON MultiLineString split at the antimeridian, ready for a map. Up to 360 points.	Not declared	Yes	Not declared	Yes
`perigee_object`Facts about an object: name, agency, country, launch date, status, mission goals and notes, identifiers (NORAD, COSPAR, Horizons), official website, sources and verification date, a catalogue image with credit and licence, and links to its view in Perigee. include_image also returns the image itself.	Facts about an object: name, agency, country, launch date, status, mission goals and notes, identifiers (NORAD, COSPAR, Horizons), official website, sources and verification date, a catalogue image with credit and licence, and links to its view in Perigee. include_image also returns the image itself.	Not declared	Yes	Not declared	Yes
`perigee_orbit`Orbit of an object: perigee and apogee altitudes (periapsis/apoapsis), period, inclination, eccentricity, semi-major axis. Earth satellites: the mean elements of their published element set, with the orbit regime (LEO, MEO, GEO, HEO); other objects: instantaneous two-body elements around their centre at a date (default: the body they orbit; inclination on its equator, on the ecliptic around the Sun).	Orbit of an object: perigee and apogee altitudes (periapsis/apoapsis), period, inclination, eccentricity, semi-major axis. Earth satellites: the mean elements of their published element set, with the orbit regime (LEO, MEO, GEO, HEO); other objects: instantaneous two-body elements around their centre at a date (default: the body they orbit; inclination on its equator, on the ecliptic around the Sun).	Not declared	Yes	Not declared	Yes
`perigee_passes`When an Earth satellite (ISS = 25544, Tiangong = 48274, Hubble = 20580, or any NORAD number) passes over a place: rise, highest point and set times with direction (azimuth, compass point) and elevation, and whether it can be seen with the naked eye (sunlit satellite, dark sky) and when. Give the place's latitude and longitude (degrees, east positive) and, for local times, its IANA time zone. Up to 3 days ahead.	When an Earth satellite (ISS = 25544, Tiangong = 48274, Hubble = 20580, or any NORAD number) passes over a place: rise, highest point and set times with direction (azimuth, compass point) and elevation, and whether it can be seen with the naked eye (sunlit satellite, dark sky) and when. Give the place's latitude and longitude (degrees, east positive) and, for local times, its IANA time zone. Up to 3 days ahead.	Not declared	Yes	Not declared	Yes
`perigee_shadow`Whether an object is in sunlight, in the penumbra or in the umbra of the body it orbits (Earth satellites: the Earth's shadow; lunar and Martian orbiters: the Moon's or Mars'), and when it next enters and leaves the shadow (default: over two orbits, at most 12 hours). Explains why a satellite crossing the night sky suddenly fades out.	Whether an object is in sunlight, in the penumbra or in the umbra of the body it orbits (Earth satellites: the Earth's shadow; lunar and Martian orbiters: the Moon's or Mars'), and when it next enters and leaves the shadow (default: over two orbits, at most 12 hours). Explains why a satellite crossing the night sky suddenly fades out.	Not declared	Yes	Not declared	Yes
`perigee_sky`What is in the sky from a place at a date (default: now): day, twilight or night; the Sun with its next rise, set and twilights; the Moon with its phase, illuminated share, rise and set; each planet with its altitude, direction, brightness (magnitude), constellation and whether it can be seen with the naked eye; and the bright named stars above the horizon. For "what can I see tonight", give the evening time.	What is in the sky from a place at a date (default: now): day, twilight or night; the Sun with its next rise, set and twilights; the Moon with its phase, illuminated share, rise and set; each planet with its altitude, direction, brightness (magnitude), constellation and whether it can be seen with the naked eye; and the bright named stars above the horizon. For "what can I see tonight", give the evening time.	Not declared	Yes	Not declared	No
`perigee_sky_conjunctions`Apparent close pairings seen from a place over a period (default 7 days, at most 7): the Moon and the planets with each other and with the bright stars near the ecliptic (Regulus, Spica, Antares, Aldebaran, Pollux…), at their closest, with where to look and whether the pair is visible (above the horizon, dark sky). With `satellite` (a NORAD number), that satellite passing near them during its passes over one day.	Apparent close pairings seen from a place over a period (default 7 days, at most 7): the Moon and the planets with each other and with the bright stars near the ecliptic (Regulus, Spica, Antares, Aldebaran, Pollux…), at their closest, with where to look and whether the pair is visible (above the horizon, dark sky). With `satellite` (a NORAD number), that satellite passing near them during its passes over one day.	Not declared	Yes	Not declared	Yes
`perigee_state`Position (km, ICRF/J2000 equatorial axes) and velocity (km/s) of an object at a date, relative to a centre (default: the body it orbits or stands on), with distance, altitude above the centre, speed, light time, whether it is in sunlight, and provenance. Around the Earth, the Moon or Mars it also gives the ground point below it (latitude, longitude; on the Earth the country or sea, e.g. "over Brazil", "over the Indian Ocean").	Position (km, ICRF/J2000 equatorial axes) and velocity (km/s) of an object at a date, relative to a centre (default: the body it orbits or stands on), with distance, altitude above the centre, speed, light time, whether it is in sunlight, and provenance. Around the Earth, the Moon or Mars it also gives the ground point below it (latitude, longitude; on the Earth the country or sea, e.g. "over Brazil", "over the Indian Ocean").	Not declared	Yes	Not declared	Yes
`perigee_stats`Counts of the active satellites: total, by owner (country or organisation, e.g. US, PRC, CIS, ESA), by operator (SpaceX, OneWeb, Amazon Kuiper…), by CelesTrak group (constellations, navigation, weather…), by orbit regime (LEO, MEO, GEO, HEO), object type, launch year, recent launches and low-orbit altitude bands. owner, operator or group narrow a list to matching entries (code or name).	Counts of the active satellites: total, by owner (country or organisation, e.g. US, PRC, CIS, ESA), by operator (SpaceX, OneWeb, Amazon Kuiper…), by CelesTrak group (constellations, navigation, weather…), by orbit regime (LEO, MEO, GEO, HEO), object type, launch year, recent launches and low-orbit altitude bands. owner, operator or group narrow a list to matching entries (code or name).	Not declared	Yes	Not declared	Yes
`perigee_tonight`What there is to see tonight from a place (the coming night, or the current one): the night's start and end, the Moon (phase, illuminated share, rise and set), the planets visible to the naked eye, the visible passes of the ISS, Tiangong and Hubble, the close pairings of the Moon and planets, and the sky's events of the night, with short highlights ready to read. Give the place's latitude and longitude and, for local times, its IANA time zone.	What there is to see tonight from a place (the coming night, or the current one): the night's start and end, the Moon (phase, illuminated share, rise and set), the planets visible to the naked eye, the visible passes of the ISS, Tiangong and Hubble, the close pairings of the Moon and planets, and the sky's events of the night, with short highlights ready to read. Give the place's latitude and longitude and, for local times, its IANA time zone.	Not declared	Yes	Not declared	Yes
`perigee_view`Link to Perigee showing an object (optionally at a date, paused or accelerated, followed), and an iframe snippet for a lesson page: the live 3D view without bars or panels. The embedding page can then drive the view and take PNG snapshots with postMessage (protocol perigee:v1, documented in `embedApi`). For a star, star_map opens its 3D map with the Sun instead (every named star at its real distance, the Sun–star distance drawn; compare adds a second star), alone in the iframe.	Link to Perigee showing an object (optionally at a date, paused or accelerated, followed), and an iframe snippet for a lesson page: the live 3D view without bars or panels. The embedding page can then drive the view and take PNG snapshots with postMessage (protocol perigee:v1, documented in `embedApi`). For a star, star_map opens its 3D map with the Sun instead (every named star at its real distance, the Sun–star distance drawn; compare adds a second star), alone in the iframe.	Not declared	Yes	Not declared	No

Details

Registry status: Active
Published: Nov 14, 2026
Updated: Nov 14, 2026
Website: https://perigee.info/⁠ (opens in a new tab)
Repository: https://github.com/dlamarre-dev/Perigee⁠ (opens in a new tab)
Categories (suggested): Design and mediaSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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