TimeConstants (JEphem API)

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jephem.astro.spacetime
Interface TimeConstants

All Known Implementing Classes:: AstroContext, MeanTrue, Pluto99, Time, VSOP87

public interface TimeConstants

Interface containing constants related with space. Related methods can be found in class Time.

Field Summary

static double DAYS_PER_CENTURY
          Number of days per century ( = 36525).

static double DAYS_PER_MILLENIUM
          Number of days per millenium ( = 365250).

static double DAYS_PER_YEAR
          Number of days per year ( = 365.25).

static double JD1900
          Julian date of 01/01/1900, 12h00m00s TU ( = 2415020.0).

static double JD2000
          Julian date of 01/01/2000, 12h00m00s TU ( = 2451545.0).

static double JD2100
          Julian date of 01/01/2100, 12h00m00s TU ( = 2488070.0).

static double SECONDS_PER_DAY
          Number of seconds in a day (24 x 3600 = 86400).

static int TT_TDB
          Constant used to characterize that a date is expressed in TT (Terrestrial Time), which is considered as equal to TDB (Temps Dynamique Barycentrique) in JEphem.

static int UTC
          Constant used to characterize that a date is expressed in UTC (Universal Coordinated Time).

Field Detail

DAYS_PER_CENTURY

public static final double DAYS_PER_CENTURY

Number of days per century ( = 36525).

See Also:: Constant Field Values

DAYS_PER_MILLENIUM

public static final double DAYS_PER_MILLENIUM

Number of days per millenium ( = 365250).

See Also:: Constant Field Values

DAYS_PER_YEAR

public static final double DAYS_PER_YEAR

Number of days per year ( = 365.25).

See Also:: Constant Field Values

JD1900

public static final double JD1900

Julian date of 01/01/1900, 12h00m00s TU ( = 2415020.0).

See Also:: Constant Field Values

JD2000

public static final double JD2000

Julian date of 01/01/2000, 12h00m00s TU ( = 2451545.0).

See Also:: Constant Field Values

JD2100

public static final double JD2100

Julian date of 01/01/2100, 12h00m00s TU ( = 2488070.0).

See Also:: Constant Field Values

SECONDS_PER_DAY

public static final double SECONDS_PER_DAY

Number of seconds in a day (24 x 3600 = 86400).

See Also:: Constant Field Values

TT_TDB

public static final int TT_TDB

Constant used to characterize that a date is expressed in TT (Terrestrial Time), which is considered as equal to TDB (Temps Dynamique Barycentrique) in JEphem.

See Also:: Constant Field Values

UTC

public static final int UTC

Constant used to characterize that a date is expressed in UTC (Universal Coordinated Time).

See Also:: Constant Field Values