リファレンス

通過: 衛星が場所の空を通る時刻

import { … } from "@johnmorrisdotca/chikyu-earth/passes";

リファレンスの説明と例は英語です。見出しと目次は日本語です。

エクスポート

名前	種類	概要
`Compass`	型	The sixteen points of the compass, the words a pass table uses for a direction.
`compassOf`	関数	The compass word for a direction.
`ESTIMATED_CROSS_SECTIONS`	定数	The average cross-sections, in square metres, that this package assumes for the bright satellites it names by NORAD number: the ISS (25544), China's Tianhe (48274) and the Hubble Space Telescope (20580).
`findPasses`	関数	Every pass of the satellites over a place in a span of time, the ones a person can see or all of them.
`GroundPoint`	型	One point of a satellite's ground track: the place on the Earth straight under it.
`groundTrack`	関数	The places straight under a satellite from one moment to another: its ground track.
`magnitude`	関数	The apparent magnitude of a satellite, treating it as a sphere that reflects light evenly: the standard magnitude, dimmed by the distance (5 magnitudes for every tenfold) and by how little of it the Sun lights from where the watcher stands (the phase angle, 0 when the Sun is behind the watcher and the satellite is fully lit, 180 degrees when it is all dark).
`Observer`	型	Where the watcher stands: degrees of latitude (north is positive) and longitude (east is positive), and the height above sea level in metres (0 by default).
`PassOptions`	型	What `findPasses` may be asked.
`passPath`	関数	The satellite's track across the sky for a pass: a point every `stepSeconds` from the pass's start to its end, with the first and last on the start and the end.
`PassPoint`	型	One moment of a pass: when, which way, how high and how far.
`PassReason`	型	Why a pass is or is not visible: `visible`; `daylight` (the watcher's sky is too bright for the whole pass); `shadow` (the sky is dark enough but the satellite is in the Earth's shadow for all of it); `faint` (it is lit and the sky is dark, but it is fainter than the limiting magnitude).
`PassWindow`	型	The span of time to look in: a pass is listed when its highest point is in it.
`PathPoint`	型	One sample along a pass: when, where in the sky, and whether the satellite is in sunlight (the track is drawn solid there and dashed in the shadow).
`satelliteAt`	関数	Where one satellite is in the sky over a place at one moment, and what the light is like: its direction and height, its distance, whether the Sun lights it, how high the Sun is, and how bright it looks.
`SatellitePass`	型	One pass of a satellite over a place: it comes up through `minAltitude`, reaches its highest and goes down below `minAltitude`, with whether and how it can be seen.
`skyAt`	関数	The name of the sky for a Sun altitude.
`SkyLabels`	型	The words on a sky dome: the four directions and the three marks on the track.
`SkyName`	型	How dark the watcher's sky is, by the Sun's altitude: `day` (the Sun is up), `civil` twilight (the Sun is below the horizon by up to 6 degrees: the brightest stars and planets show), `nautical` (6 to 12 degrees), `astronomical` (12 to 18 degrees) and `night` (more than 18 degrees below).
`SkyOptions`	型	What `skySvg` may be asked.
`skySvg`	関数	A pass drawn on the sky as an SVG string: the horizon as a circle, the zenith (straight overhead) in the middle with rings at 30 and 60 degrees, north up and east on the left (the way a star chart is held over your head), and the satellite's track as a line that is solid and warm where the satellite is in sunlight and dashed where it is in the Earth's shadow, with its start, highest point and end marked.
`STANDARD_MAGNITUDES`	定数	The standard magnitudes this package assumes for the satellites in `ESTIMATED_CROSS_SECTIONS` (`standardMagnitude` of each, with the default albedo).
`standardMagnitude`	関数	The standard magnitude of a satellite worked out from its size: the brightness, from 1000 km away with half of it lit by the Sun, of a sphere with the same average cross-section that reflects `albedo` of the light that falls on it evenly in every direction.
`sunAltitude`	関数	The Sun's altitude over a place at a moment, in degrees (above 0 the Sun is up).
`VisiblePart`	型	The part of a pass a person can see: from when the satellite is lit, the sky is dark enough and it is bright enough and above the lowest altitude, to when one of them stops; and the highest point of that part.

ソースを見る GitHub で編集@johnmorrisdotca/chikyu-earth 0.51.1 のソースから作成しました。

この日本語は、まだ日本語を母語とする方の確認を受けていません。訂正を歓迎します。