Class: MkApos::Apos

Inherits:
Object
  • Object
show all
Includes:
Compute
Defined in:
lib/mk_apos/apos.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Compute

calc_dist, calc_pos, calc_t1, calc_unit_vector, calc_velocity, compute_moon, compute_sun, conv_lorentz, get_icrs, get_jd, get_r_e, inner_prod, utc2tdb

Constructor Details

#initialize(bin_path, utc) ⇒ Apos

Returns a new instance of Apos.



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# File 'lib/mk_apos/apos.rb', line 6

def initialize(bin_path, utc)
  @bin_path, @utc = bin_path, utc
  # === t1(= TDB), t2(= TDB) における位置・速度（ICRS 座標）用Hash
  @icrs_1, @icrs_2 = Hash.new, Hash.new
  # === 時刻 t2 の変換（UTC（協定世界時） -> TDB（太陽系力学時））
  @tdb = utc2tdb(@utc)
  # === 時刻 t2 のユリウス日
  @jd_tdb = get_jd(@tdb)
  # === 時刻 t2(= TDB) におけるの位置・速度（ICRS 座標）の計算 (地球, 月, 太陽)
  Const::BODIES.each { |k, v| @icrs_2[k] = get_icrs(v, @jd_tdb) }
  # === 時刻 t2(= TDB) における地球と太陽・月の距離
  @r_e = get_r_e
  # === 太陽／月／地球の半径取得
  e = EphJpl.new(@bin_path, 11, 3, @jd_tdb)
  @asun = e.bin[:cvals][e.bin[:cnams].index("ASUN")]
  @am   = e.bin[:cvals][e.bin[:cnams].index("AM")]
  @re   = e.bin[:cvals][e.bin[:cnams].index("RE")]
end

Instance Attribute Details

#jd_tdb ⇒ Object (readonly)

Returns the value of attribute jd_tdb.



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# File 'lib/mk_apos/apos.rb', line 3

def jd_tdb
  @jd_tdb
end

#tdb ⇒ Object (readonly)

Returns the value of attribute tdb.



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# File 'lib/mk_apos/apos.rb', line 3

def tdb
  @tdb
end

#utc ⇒ Object (readonly)

Returns the value of attribute utc.



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# File 'lib/mk_apos/apos.rb', line 3

def utc
  @utc
end

Instance Method Details

#moon ⇒ Object

MOON

@param: <none> @return: [[lambda, beta, d], [alpha, delta, d], [apparent_radius, parallax]]

(月視黄経、視黄緯、地心距離、視赤経、視赤緯、地心距離、視半径、視差))



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# File 'lib/mk_apos/apos.rb', line 43

def moon
  return compute_moon
end

#sun ⇒ Object

SUN

@param: <none> @return: [[lambda, beta, d], [alpha, delta, d], [apparent_radius, parallax]]

(太陽視黄経、視黄緯、地心距離、視赤経、視赤緯、地心距離、視半径、視差))



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# File 'lib/mk_apos/apos.rb', line 32

def sun
  return compute_sun
end