Class AstroMath

Low-level mathematical utilities for coordinate transformations.

Index

Constructors

Properties

Methods

getAyanamsha getGMST getJulianDay getLagna getMoonPosition getNakshatra getPlanetPosition getRashi getSunPosition makeTime

Constructors

constructor

new AstroMath(): AstroMath
Returns AstroMath

Properties

`Static` `Readonly`DEG

DEG: number = ...

`Static` `Readonly`RAD

RAD: number = ...

Methods

`Static`getAyanamsha

getAyanamsha(time: AstroTime, method: string): number
Bridge to modern Ayanamsha models.
Parameters
- time: AstroTime
- method: string
Returns number

`Static`getGMST

getGMST(jd: number): number
Parameters
- jd: number
Returns number

`Static`getJulianDay

getJulianDay(date: Date): number
Parameters
- date: Date
Returns number

`Static`getLagna

getLagna(
    date: Date,
    lat: number,
    lon: number,
    ayanamsha: number,
): {
    sidereal: number;
    siderealRashi: { degree: number; name: string };
    tropical: number;
}
Calculates the Lagna (Ascendant) using modern spherical trigonometry.
Parameters
- date: Date
  Observer's date/time
- lat: number
  Latitude
- lon: number
  Longitude
- ayanamsha: number
  Sidereal offset
Returns {
    sidereal: number;
    siderealRashi: { degree: number; name: string };
    tropical: number;
}

`Static`getMoonPosition

getMoonPosition(time: AstroTime): { hp: number; lat: number; long: number }
Parameters
- time: AstroTime
Returns { hp: number; lat: number; long: number }

`Static`getNakshatra

getNakshatra(degree: number): { degree: number; name: string; pada: number }
Identifies Nakshatra (Mansion) and Pada (Quarter).
Parameters
- degree: number
Returns { degree: number; name: string; pada: number }

`Static`getPlanetPosition

getPlanetPosition(
name: string,
time: AstroTime,
): { dist: number; lat: number; long: number }
Parameters
- name: string
- time: AstroTime
Returns { dist: number; lat: number; long: number }

`Static`getRashi

getRashi(degree: number): { degree: number; name: string }
Identifies Rashi (Sign) and degree within the sign.
Parameters
- degree: number
Returns { degree: number; name: string }

`Static`getSunPosition

getSunPosition(time: AstroTime): number
Parameters
- time: AstroTime
Returns number

`Static`makeTime

makeTime(date: Date): AstroTime
Convert Standard Date to AstroTime (relative to J2000.0).
Parameters
- date: Date
Returns AstroTime