net.grelf.astro

Class RA

java.lang.Object

net.grelf.Angle

net.grelf.astro.RA

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<Angle>

public class RA
extends Angle
implements java.lang.Cloneable, java.io.Serializable

Representation of Right Ascension (celestial longitude).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class net.grelf.Angle

Angle.Format, Angle.Units

Field Summary

Fields inherited from class net.grelf.Angle

DEGREE_SYMBOL, FOUR_PI, TWO_PI, valueRadians

Constructor Summary

Constructors

Constructor and Description
RA(Angle angle)
RA(double degrees)
RA(double degrees, double sigmaDegs)
RA(double hour, double min, double sec) Can pass in fractional hours or minutes but will be held in normalised form with integer hours and minutes plus fractional seconds.
RA(double hour, double min, double sec, double sigmaDegs) Can pass in fractional hours or minutes but will be held in normalised form with integer hours and minutes plus fractional seconds.

Method Summary

Modifier and Type	Method and Description
static RA	atan2(double y, double x)
RA	clone() Returns a new RA object with the same data.
boolean	equals(java.lang.Object other)
byte	getHour() Range 0..23
byte	getMinute() Range 0..59
float	getSecond() Range 0.0..59.99999
int	hashCode() Enable objects of this class to be used as hash keys.
static RA	parseRA(java.lang.String s) Allow all possible formatting of the String.
double	toDegrees()
double	toHours()
java.lang.String	toString() Units are radians.

Methods inherited from class net.grelf.Angle

acos, add, angleStatistics, angleStatistics, asin, atan, compareTo, cos, difference, equals, getDegrees, getHours, getRadians, getStdErrDegrees, getStdErrHours, getStdErrRadians, in360, multiply, parseAngle, sin, subtract, tan, toString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RA

public RA(double hour,
          double min,
          double sec,
          double sigmaDegs)

Can pass in fractional hours or minutes but will be held in normalised form with integer hours and minutes plus fractional seconds.

RA

public RA(double hour,
          double min,
          double sec)

Can pass in fractional hours or minutes but will be held in normalised form with integer hours and minutes plus fractional seconds.

RA

public RA(double degrees,
          double sigmaDegs)

RA

public RA(double degrees)

RA

public RA(Angle angle)

Method Detail

getHour

public byte getHour()

Range 0..23

getMinute

public byte getMinute()

Range 0..59

getSecond

public float getSecond()

Range 0.0..59.99999

atan2

public static RA atan2(double y,
                       double x)

parseRA

public static RA parseRA(java.lang.String s)
                  throws java.lang.NumberFormatException

Allow all possible formatting of the String. Eg,
23.45678 (decimal hours if part before point is less than 24)
23:27:18.3
23 27 18.3
23h27m18.3s
232718.3 (sexagesimal)
02h27m18.3
2h27m18.3
2 27m18.3 (can be any single non-digit separators between sub-fields)
2:07:04.3
but not 274.3 which would have to be 20704.3 to be unambiguous. No signs are allowed.

Throws:

java.lang.NumberFormatException

toHours

public double toHours()

toDegrees

public double toDegrees()

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class Angle

hashCode

public int hashCode()

Enable objects of this class to be used as hash keys.

Overrides:

hashCode in class Angle

clone

public RA clone()

Returns a new RA object with the same data.

Overrides:

clone in class Angle

toString

public java.lang.String toString()

Description copied from class: Angle

Units are radians.

Overrides:

toString in class Angle