ootk-core
Version:
Orbital Object Toolkit. A modern typed replacement for satellite.js including SGP4 propagation, TLE parsing, Sun and Moon calculations, and more.
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TypeScript
/**
* @author Theodore Kruczek.
* @license MIT
* @copyright (c) 2022-2025 Theodore Kruczek Permission is
* hereby granted, free of charge, to any person obtaining a copy of this
* software and associated documentation files (the "Software"), to deal in the
* Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* @copyright (c) 2012–2016 Brandon Rhodes
* This was ported from the python-sgp4 library by Brandon Rhodes.
*/
import { OmmParsedDataFormat } from '../interfaces/OmmFormat.js';
import { Sgp4OpsMode } from '../enums/Sgp4OpsMode.js';
import { GreenwichMeanSiderealTime, SatelliteRecord, StateVectorSgp4, Vec3Flat } from '../types/types.js';
export declare enum Sgp4GravConstants {
wgs72old = "wgs72old",
wgs72 = "wgs72",
wgs84 = "wgs84"
}
export declare enum Sgp4Methods {
NEAR_EARTH = "n",
DEEP_SPACE = "d"
}
export declare class Sgp4 {
private static angle_;
private static asinh_;
static createSatrec(tleLine1: string, tleLine2: string, whichconst?: Sgp4GravConstants, opsmode?: Sgp4OpsMode): SatelliteRecord;
static createSatrecFromOmm(omm: OmmParsedDataFormat, whichconst?: Sgp4GravConstants, opsmode?: Sgp4OpsMode): SatelliteRecord;
private static cross_;
static days2mdhms(year: number, days: number): {
mon: number;
day: number;
hr: number;
min: number;
sec: number;
};
private static dot_;
static gstime(jdut1: number): GreenwichMeanSiderealTime;
static invjday(jd: number, jdfrac: number): {
year: number;
mon: number;
day: number;
hr: number;
min: number;
sec: number;
};
static jday(year: number | Date, mon?: number, day?: number, hr?: number, min?: number, sec?: number, ms?: number): {
jd: number;
jdFrac: number;
};
private static mag_;
private static newtonnu_;
static propagate(satrec: SatelliteRecord, tsince: number): StateVectorSgp4;
static rv2coe(r: Vec3Flat, v: Vec3Flat, mus: number): {
p: number;
a: number;
ecc: number;
incl: number;
omega: number;
argp: number;
nu: number;
m: number;
arglat: number;
truelon: number;
lonper: number;
};
/**
* Determines the sign of a given number.
* @param x - The input number to evaluate.
* @returns `-1.0` if the input number is less than `0.0`, otherwise `1.0`.
*/
private static sgn_;
/**
* Computes the hyperbolic sine of a given number.
*
* The hyperbolic sine is calculated using the formula:
* sinh(x) = (e^x - e^(-x)) / 2
* @param x - The input number for which to calculate the hyperbolic sine.
* @returns The hyperbolic sine of the input number.
*/
private static sinh_;
private static dpper_;
private static dscom_;
private static dsinit_;
private static dspace_;
private static getgravconst_;
private static initl_;
private static sgp4init_;
}