Class Angle

constructor

• new Angle(uas: number): Angle

• the angle value in microarcsec

  Parameters

  • uas: number

  Returns Angle

Readonlyuas

Static ReadonlyCIRCLE

Static ReadonlyD2H

Static ReadonlyD2M

Static ReadonlyD2Mas

Static ReadonlyD2R

Static ReadonlyD2S

Static ReadonlyD2Uas

Static ReadonlyDEGREE_SIGN

Static ReadonlyH2D

Static ReadonlyH2Mas

Static ReadonlyH2R

Static ReadonlyH2Uas

Static ReadonlyHMin2Mas

Static ReadonlyHMin2Uas

Static ReadonlyHSec2Mas

Static ReadonlyHSec2Uas

Static ReadonlyM2D

Static ReadonlyM2Mas

Static ReadonlyM2R

Static ReadonlyM2Uas

Static ReadonlyMas2R

Static ReadonlyR2D

Static ReadonlyR2H

Static ReadonlyR2M

Static ReadonlyR2Mas

Static ReadonlyR2S

Static ReadonlyR2Uas

Static ReadonlyS2D

Static ReadonlyS2Mas

Static ReadonlyS2R

Static ReadonlyS2Uas

Static ReadonlyUas2D

Static ReadonlyUas2M

Static ReadonlyUas2R

Static ReadonlyUas2S

add

• add(a2: Angle): Angle

• Parameters

  • a2: Angle

  Returns Angle

div

• div(a2: Angle): Angle

• Parameters

  • a2: Angle

  Returns Angle

div2

• div2(a2: number): Angle

• Parameters

  • a2: number

  Returns Angle

mul

• mul(a2: Angle): Angle

• Parameters

  • a2: Angle

  Returns Angle

mul2

• mul2(a2: number): Angle

• Parameters

  • a2: number

  Returns Angle

normalizedRa

• normalizedRa(): Angle

• returns Angle with value normalized between 0 to 2*PI

  Returns Angle

sub

• sub(a2: Angle): Angle

• Parameters

  • a2: Angle

  Returns Angle

toArcSec

• toArcSec(): number

• returns angle value in arcseconds

  Returns number

toDegree

• toDegree(): number

• returns angle value in degrees

  Returns number

toJSON

• toJSON(): number

• Returns number

toMas

• toMas(): number

• returns angle value in milliarcseconds

  Returns number

toRadian

• toRadian(): number

• returns angle value in radians

  Returns number

StaticassertDe

• assertDe(de: number): void

• Parameters

  • de: number

  Returns void

StaticassertRa

• assertRa(ra: number): void

• Parameters

  • ra: number

  Returns void

StaticdeToString

• deToString(de2: number, withColon?: boolean): string

• convert DE to string in format '1d 2m' minutes and seconds are auto added as needed

  Parameters

  • de2: number

    in radians
  • withColon: boolean = true

    if true format as hh:mm:ss.sss, otherwise XXh XXm XXs

  Returns string

  de in string form

Staticdistance

• distance(ra1: number, de1: number, ra2: number, de2: number): number

• calculate great circle distance of two points, coordinates are given in radians

  Parameters

  • ra1: number
  • de1: number
  • ra2: number
  • de2: number

  Returns number

  distance of two points in radians

StaticfromArcHour

• fromArcHour(value: number): Angle

• creates a new Angle from the given value in archours

  Parameters

  • value: number

  Returns Angle

StaticfromArcMinute

• fromArcMinute(value: number): Angle

• creates a new Angle from the given value in arcminutes

  Parameters

  • value: number

  Returns Angle

StaticfromArcSec

• fromArcSec(value: number): Angle

• creates a new Angle from the given value in arcsecs

  Parameters

  • value: number

  Returns Angle

StaticfromDegree

• fromDegree(value: number): Angle

• creates a new Angle from the given value in degrees

  Parameters

  • value: number

  Returns Angle

StaticfromMas

• fromMas(value: number): Angle

• creates a new Angle from the given value in milliarcseconds

  Parameters

  • value: number

  Returns Angle

StaticfromRadian

• fromRadian(value: number): Angle

• creates a new Angle from the given value in radians

  Parameters

  • value: number

  Returns Angle

Staticmax

• max(a1: Angle, a2: Angle): Angle

• returns maximal angle from two options

  Parameters

  • a1: Angle
  • a2: Angle

  Returns Angle

Staticmin

• min(a1: Angle, a2: Angle): Angle

• returns minimal angle from two options

  Parameters

  • a1: Angle
  • a2: Angle

  Returns Angle

StaticnormalizeRa

• normalizeRa(ra2: number): number

• normalize RA into 0 - 2 * PI range

  Parameters

  • ra2: number

  Returns number

StaticparseDe

• parseDe(
      deSign: string,
      deDegree: string,
      deMin: string,
      deSec: null | string,
  ): Angle

• Parse Declination from four values. It uses Big, so there are no rounding errors

  Parameters

  • deSign: string

    signum (ie + or -)
  • deDegree: string

    declination in degrees
  • deMin: string

    remaining part in arcminutes
  • deSec: null | string

    remaining part in arcseconds

  Returns Angle

  declination in microarcseconds

StaticparseDeFromString

• parseDeFromString(de: string): Angle

• Tries to parse Angle from string. It knows common formats used for Declination

  Parameters

  • de: string

  Returns Angle

StaticparseRa

• parseRa(raHour: string, raMin: string, raSec: null | string): Angle

• parse Right ascencion from triple values raHour raMin, raSec This method uses big decimal, so there are no rounding errors

  Parameters

  • raHour: string

    ra hours value as string
  • raMin: string

    ra minutes value as string
  • raSec: null | string

    ra seconds value as string

  Returns Angle

  result in microarcseconds

StaticparseRaDe

• parseRaDe(str: string): [Angle, Angle]

• Parses pair of RA and De coordinates. This method should handle formats used in vizier. An example: The following writings are allowed:

  20 54 05.689 +37 01 17.38
  10:12:45.3-45:17:50
  15h17m-11d10m
  15h17+89d15
  275d11m15.6954s+17d59m59.876s
  12.34567h-17.87654d
  350.123456d-17.33333d <=> 350.123456 -17.33333
  

  Parameters

  • str: string

  Returns [Angle, Angle]

StaticparseRaFromString

• parseRaFromString(ra: string): Angle

• Tries to parse Angle from string. It knows common formats used for Right ascencion (including hours)

  Parameters

  • ra: string

  Returns Angle

StaticrandomDe

• randomDe(): Angle

• returns random angle with value between -PI/2 and + PI/2

  Returns Angle

StaticrandomRa

• randomRa(): Angle

• returns random angle with value between 0 and 2*PI

  Returns Angle

StaticraToString

• raToString(ra: number, withColon?: boolean): string

• convert RA to string in format '1h 2m' minutes and seconds are auto added as needed

  Parameters

  • ra: number

    in radians
  • withColon: boolean = true

    if true format as hh:mm:ss.sss, otherwise XXh XXm XXs

  Returns string

  ra in string form