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NASA_IgnisDivineth

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  1.  == NASA PROJECT ==
  2.  
  3. $ ftp = ssd.jpl.nasa.gov
  4.  
  5.  
  6. >EXACT< name search [SPACE sensitive]:
  7.             Horizons> Vesta;     (or "ASTNAM = Vesta;" for faster s
  8.             Horizons> DES=AN10*; (Objects whose designation contain
  9. ...             Horizons> 45;        (Numbered asteroid "45 Eugenia")
  10.             Horizons> ;          (Enter your own osculating element
  11.  
  12.  
  13.  
  14. COMMANDS:
  15.   Program information:
  16.     MB .............. Show planet/natural¬≠satellite (major¬≠body) ID
  17.     SB .............. Show small¬≠body search¬≠field names & meanings
  18.     NEWS ............ Display program news (new capabilities, updat
  19.     ?! .............. Extended help ('?' for brief help).
  20.  
  21.  
  22.  
  23.   Program controls:
  24.     LIST ............ Toggle display of small¬≠body match¬≠parameter
  25.     PAGE ............ Toggle screen paging (scrolling) on or off.
  26.     EMAIL {X} ....... Set your email address to {X} for output deli
  27.     TTY {R} {C}...... Check or reset screen size; "tty" or "tty 24
  28.     X ............... Exit JPL on¬≠line system (also "QUIT" or "EXIT
  29.     ¬≠ ............... Return to the previous prompt (back¬≠up!).
  30.  
  31.  
  32.  
  33.   Storing format default settings:
  34.     LOAD {macro} .... Load previously SAVED output¬≠format {macro}.
  35.     SAVE {macro} .... Save/replace output¬≠format macro with current
  36.     DELETE {macro} .. Delete previously saved output¬≠format macro.
  37.  
  38.  
  39.  
  40. project NASA
  41.   C       NAME ...... Asteroid OR comet name fragment
  42.   C       DES ....... Object designation
  43.   R       EPOCH ..... Julian Date of osculating elements
  44.   R       CALEPO .... Calendar date of osc. elements; YYYYMM
  45.   R       A ......... Semi¬≠major axis (AU)
  46.   R       EC ........ Eccentricity
  47.   R       IN ........ Inclination of orbit plane (DEG) wrt e
  48.   R       OM ........ Longitude of Ascending Node (DEG) wrt
  49.   R       W ......... Argument of Perihelion (DEG) wrt eclip
  50.   R       TP ........ Perihelion Julian Date
  51.   R       CALTP ..... Perihelion calendar date; YYYYMMDD.fff
  52.   R       MA ........ Mean anomaly (DEG)
  53.   R       PER ....... Orbital period (YRS)
  54.   R       RAD ....... Object radius (KM)
  55.   R       GM ........ Object GM (KM^3/S^2), only a few are k
  56.   R       QR ........ Perihelion distance (AU)
  57.   R       ADIST ..... Aphelion distance (AU)
  58.   R       ANGMOM .... Specific angular momentum (AU^2/DAY)
  59.   R       N ......... Mean motion (DEG/DAY)
  60.   R       DAN ....... Heliocentric dist. (AU) of ascending n
  61.   R       DDN ....... Heliocentric dist. (AU) of descending
  62.   R       L ......... Ecliptic longitude of perihelion (DEG)
  63.   R       B ......... Ecliptic latitude of perihelion (DEG)
  64.   I       NOBS ...... Number of astrometric determinations in solution
  65.  
  66.  
  67.  
  68. The next parameters are ASTEROID SPECIFIC. If one or more is used, the search
  69. will conclude faster by examining asteroids only. For example, including
  70. something like 'H > ­10;' will limit the search to asteroids only:
  71.  
  72.  
  73.  
  74.   C       ASTNAM .... Asteroid name fragment (designation if unnamed)
  75.   R       B¬≠V ....... B¬≠V color (asteroid)
  76.   R       H ......... Absolute magnitude parameter (asteroid)
  77.   R       G ......... Magnitude slope parameter; can be < 0 (asteroid)
  78.   R       ROTPER .... Rotational period, hrs (asteroid)
  79.   R       ALBEDO .... Geometric albedo (asteroid)
  80.   C       STYP ...... Spectral type, Tholen scheme (asteroid)
  81.  
  82.  
  83.  
  84. The next parameters are COMET SPECIFIC. If one or more is used, the search
  85. will conclude faster by examining comets only. For example, including something
  86. like "M1 > ­10;' will limit the search to comets only:
  87.   C       COMNAM .... Comet name fragment (designation if unnamed)
  88.   I       COMNUM .... Comet number
  89.   R       M1 ........ Total absolute magnitude (comet)
  90.   R       M2 ........ Nuclear absolute magnitude (comet)
  91.   R       K1 ........ Total magnitude scaling factor (comet)
  92.   R       K2 ........ Nuclear magnitude scaling factor (comet)
  93.   R       PHCOF ..... Phase coefficient for k2=5 (comet)
  94.   R       A1 ........ Radial non¬≠grav accel (comet), 10^¬≠8 AU/DAY^2
  95.   R       A2 ........ Transverse non¬≠grav accel (comet), 10^¬≠8 AU/DAY^2
  96.   R       A3 ........ Normal non¬≠grav accel (comet), AU/d^2
  97.   R       DT ........ Non¬≠grav lag/delay parameter (comet), days.
  98.  
  99.  
  100.  
  101.   Only 1 of the 4 keywords 'ASTNAM', 'COMNAM', 'NAME', or 'DES' may
  102. be specified on a given search.
  103.  
  104.  
  105.  
  106. Directives:
  107. ­­­­­­­­­­­
  108. There are 3 directives that may be used to limit or control searches:
  109.  
  110.  
  111.  
  112.      Directive  Description
  113.      ¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠  ¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠¬≠
  114.      COM .....  Limit search to comets only
  115.      AST .....  Limit search to asteroids only
  116.      LIST ....  Display parameter values for matched objects. (This may be
  117.                 set as a default for all subsequent searches by typing "LIST"
  118.                 at the main system prompt, "Horizons>".)
  119.  
  120.  
  121.  
  122. For example,
  123.  
  124.  
  125.  
  126.     "A < 2.5; IN > 10; AST;"        match parameters against asteroids ONLY.
  127.     "A < 2.5; IN > 10; AST; LIST;"  match AND display values of the parameters
  128. telnet ssd.jpl.nasa.gov :6775
  129. email: Jon.Giorgini@jpl.nasa.gov  /pub/ssd/
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