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EPHEMERIS QUANTITIES AVAILABLE
Via  The NASA/JPL Horizons API

These values are the quantities taken from the on-line interface listing at
the following URL See: [Table Settings] for the complete quantities listing.

https://ssd.jpl.nasa.gov/horizons/app.html

When making different kinds of ephemerides, some quantities may not apply.

If an unknown quantity is requested, an error message will be returned.

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QUANTITY   VALUE(s)
========   ===================================================================
  1        Astrometric RA & DEC (ICRF or B1950/FK4)
* 2        Apparent RA & DEC (ICRF)
  3        Rates; RA & DEC
* 4        Apparent AZ & EL
  5        Rates; AZ & EL
  6        Satellite X & Y, pos. angle
  7        Local apparent sidereal time
  8        Airmass & extinction
  9        Visual mag. & Surface Brght
  10       Illuminated fraction
  11       Defect of illumination
  12       Satellite angular separ/vis.
  13       Target angular diameter
  14       Observer sub-lon & sub-lat
  15       Sun sub-longitude & sub-latitude
  16       Sub-Sun position angle & distance
  17       North Pole position angle & distance
  18       Heliocentric ecliptic lon. & lat.
  19       Heliocentric range & range-rate
  20       Observer range & range-rate
  21       One-way (down-leg) light-time
  22       Speed wrt Sun & observer
  23       Sun-Observer-Target ELONG angle
  24       Sun-Target-Observer ~PHASE angle
  25       Target-Observer-Moon angle/ Illum%
  26       Observer-Primary-Target angle
  27       Sun-Target radial & -vel pos. angle
  28       Orbit plane angle
  29       Constellation ID
  30       Delta-T (TDB - UT)
* 31       Observer ecliptic lon. & lat.
  32       North pole RA & DEC
  33       Galactic longitude & latitude
  34       Local apparent SOLAR time
  35       Earth->obs. site light-time
> 36       RA & DEC uncertainty
> 37       Plane-of-sky error ellipse
> 38       POS uncertainty (RSS)
> 39       Range & range-rate 3-sigmas
> 40       Doppler & delay 3-sigmas
  41       True anomaly angle
  42       Local apparent hour angle
  43       PHASE angle & bisector
  44       Apparent longitude Sun (L_s)
* 45       Inertial apparent RA & DEC
  46       Rate: Inertial RA & DEC
  47       Sky motion: rate & angles
  48       Lunar sky-brightness & sky SNR

NOTES:
  *        Affected by optional atmospheric refraction setting.
  >        Statistical value that uses orbit covariance, if available.

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