Automated mail xmit by MAIL_REQUEST, PID= 752 Thu Jan 15 12:25:10 2015 ++++++++++++++++++++++++++++++++ (part 1 of 1) +++++++++++++++++++++++++++++++ ******************************************************************************* Ephemeris / MAIL_REQUEST Thu Jan 15 12:25:09 2015 Pasadena, USA / Horizons ******************************************************************************* Target body name: Jupiter (599) {source: JUP310} Center body name: Earth (399) {source: DE-0431LE-0431} Center-site name: (user defined site below) ******************************************************************************* Start time : A.D. 2048-Apr-26 19:04:00.0000 UT Stop time : A.D. 2060-Dec-30 04:52:00.0000 UT Step-size : DISCRETE TIME-LIST ******************************************************************************* Target pole/equ : IAU_JUPITER {East-longitude -} Target radii : 71492.0 x 71492.0 x 66854.0 km {Equator, meridian, pole} Center geodetic : 277.378700,29.8369000,0.0200000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 277.378700,5537.29160,3154.7133 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : High-precision EOP model {East-longitude +} Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole} Target primary : Sun Vis. interferer : MOON (R_eq= 1737.400) km {source: DE-0431LE-0431} Rel. light bend : Sun, EARTH {source: DE-0431LE-0431} Rel. lght bnd GM: 1.3271E+11, 3.9860E+05 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : DEG Time format : BOTH EOP file : eop.150114.p150407 EOP coverage : DATA-BASED 1962-JAN-20 TO 2015-JAN-14. PREDICTS-> 2015-APR-06 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar Elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table format : Comma Separated Values (spreadsheet) ****************************************************************************************************************************************************************************************************************************************** Date__(UT)__HR:MN:SC.fff, Date_________JDUT, , ,R.A._(ICRF/J2000.0), DEC_(ICRF/J2000.0), Azi_(a-app), Elev_(a-app), Ob-lon,Ob-lat, delta, deldot, 1-way_LT, S-O-T,/r, O-P-T, GlxLon, GlxLat, L_Ap_Hour_Ang, ****************************************************************************************************************************************************************************************************************************************** $$SOE < data columns inside CSV file > $$EOE ****************************************************************************************************************************************************************************************************************************************** Column meaning: TIME Prior to 1962, times are UT1. Dates thereafter are UTC. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. Calendar dates prior to 1582-Oct-15 are in the Julian calendar system. Later calendar dates are in the Gregorian system. Time tags refer to the same instant throughout the universe, regardless of where the observer is located. The dynamical Coordinate Time scale is used internally. It is equivalent to the current IAU definition of "TDB". Conversion between CT and the selected non-uniform UT output scale has not been determined for UTC times after the next July or January 1st. The last known leap-second is used over any future interval. NOTE: "n.a." in output means quantity "not available" at the print-time. SOLAR PRESENCE (OBSERVING SITE) Time tag is followed by a blank, then a solar-presence symbol: '*' Daylight (refracted solar upper-limb on or above apparent horizon) 'C' Civil twilight/dawn 'N' Nautical twilight/dawn 'A' Astronomical twilight/dawn ' ' Night OR geocentric ephemeris LUNAR PRESENCE (OBSERVING SITE) The solar-presence symbol is immediately followed by a lunar-presence symbol: 'm' Refracted upper-limb of Moon on or above apparent horizon ' ' Refracted upper-limb of Moon below apparent horizon OR geocentric ephemeris R.A._(J2000.0)_DEC. = J2000.0 astrometric right ascension and declination of target center. Adjusted for light-time. Units: DEGREES Azi_(a-appr)_Elev = Airless apparent azimuth and elevation of target center. Adjusted for light-time, the gravitational deflection of light, stellar aberration, precession and nutation. Azimuth measured North(0) -> East(90) -> South(180) -> West(270) -> North (360). Elevation is with respect to plane perpendicular to local zenith direction. TOPOCENTRIC ONLY. Units: DEGREES Ob-lon Ob-lat = Apparent planetographic ("geodetic") longitude and latitude (IAU2009 model) of the center of the target disk seen by the observer at print-time. This is NOT exactly the same as the "sub-observer" (nearest) point for a non-spherical target shape, but is generally very close if not an irregular body shape. Light travel-time from target to observer is taken into account. Latitude is the angle between the equatorial plane and the line perpendicular to the reference ellipsoid of the body. The reference ellipsoid is an oblate spheroid with a single flatness coefficient in which the y-axis body radius is taken to be the same value as the x-axis radius. For the gas giants Jupiter, Saturn, Uranus and Neptune, IAU2009 longitude is based on the "System III" prime meridian rotation angle of the magnetic field. By contrast, pole direction (thus latitude) is relative to the body dynamical equator. There can be an offset between the magnetic pole and the dynamical pole of rotation. Positive longitude is to the WEST. Units: DEGREES delta deldot = Range ("delta") and range-rate ("delta-dot") of target center with respect to the observer at the instant light seen by the observer at print-time would have left the target center (print-time minus down-leg light-time); the distance traveled by a light ray emanating from the center of the target and recorded by the observer at print-time. "deldot" is a projection of the velocity vector along this ray, the light-time-corrected line-of-sight from the coordinate center, and indicates relative motion. A positive "deldot" means the target center is moving away from the observer (coordinate center). A negative "deldot" means the target center is moving toward the observer. Units: AU and KM/S 1-way_LT = 1-way down-leg light-time from target center to observer. The elapsed time since light (observed at print-time) would have left or reflected off a point at the center of the target. Units: MINUTES S-O-T /r = Sun-Observer-Target angle; target's apparent solar elongation seen from observer location at print-time. If negative, the target center is behind the Sun. Angular units: DEGREES. The '/r' column is a Sun-relative code, output for observing sites with defined rotation models only. /T indicates target trails Sun (evening sky) /L indicates target leads Sun (morning sky) NOTE: The S-O-T solar elongation angle is the total separation in any direction. It does not indicate the angle of Sun leading or trailing. O-P-T = Observer-Primary-Target angle; apparent angle between a target satellite, its primary's center and an observer, at observing location, at print time. Units: DEGREES GlxLon GlxLat = Observer-centered Galactic System II (post WW II) longitude and latitude of the target center's apparent position. Adjusted for light-time, gravitational deflection of light, and stellar aberration. Units: DEG DEG L_ap_Hour_Ang = Local apparent HOUR ANGLE of target at observing site. The angle between the observer's meridian plane, containing Earth's axis of-date and local zenith direction, and a great circle passing through Earth's axis-of-date and the target's direction, measured westward from the zenith meridian to target meridian along the equator. Negative values are angular times UNTIL transit. Positive values are angular times SINCE transit. Exactly 24_hrs/360_degrees. EARTH TOPOCENTRIC ONLY. Units: sHH.fffffffff (decimal angular hours) Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA Information: http://ssd.jpl.nasa.gov/ Connect : telnet://ssd.jpl.nasa.gov:6775 (via browser) telnet ssd.jpl.nasa.gov 6775 (via command-line) Author : Jon.Giorgini@jpl.nasa.gov ******************************************************************************************************************************************************************************************************************************************