function Geo_Astrometric_ICRF_Ephem ($BodyID,$StartDateTime,$StopDateTime,
                                     $StepSize,$TimeScale,$TimeZone,
                                     $DaySumYN,$DEGorHMS,$Quantities)

Double-Click Within Text Area to Select ALL Text
BASIC CUSTOM GEOCENTRIC ICRF ASTROMETRIC EPHEMERIS FUNCTION DEMO Ref. System = ICRF Base Time Scale = UT Body ID = 699 START Date/Time = 2026-Oct-01 00:00 STOP Date/Time = 2026-Oct-31 00:00 Loc Label = Geneva, NY, USA Time Zone = -05:00 Day/Sum Time = Yes DEG or HMS = HMS Quantities = 2,20,13,9,29 ******************************************************************************* API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Revised: January 26, 2022 Saturn 699 PHYSICAL DATA: Mass x10^26 (kg) = 5.6834 Density (g/cm^3) = 0.687+-.001 Equat. radius (1 bar) = 60268+-4 km Polar radius (km) = 54364+-10 Vol. Mean Radius (km) = 58232+-6 Flattening = 0.09796 Geometric Albedo = 0.47 Rocky core mass (Mc/M) = 0.1027 Sid. rot. period (III)= 10h 39m 22.4s Sid. rot. rate (rad/s) = 0.000163785 Mean solar day, hrs =~10.656 GM (km^3/s^2) = 37931206.234 GM 1-sigma (km^3/s^2) = +- 98 Equ. grav, ge (m/s^2) = 10.44 Pol. grav, gp (m/s^2) = 12.14+-0.01 Vis. magnitude V(1,0) = -8.88 Vis. mag. (opposition)= +0.67 Obliquity to orbit = 26.73 deg Sidereal orbit period = 29.447498 yr Sidereal orbit period = 10755.698 d Mean daily motion = 0.0334979 deg/d Mean orbit velocity = 9.68 km/s Atmos. temp. (1 bar) = 134+-4 K Escape speed, km/s = 35.5 Aroche(ice)/Rp = 2.71 Hill's sphere rad. Rp = 1100 Perihelion Aphelion Mean Solar Constant (W/m^2) 16.8 13.6 15.1 Maximum Planetary IR (W/m^2) 4.7 4.5 4.6 Minimum Planetary IR (W/m^2) 4.7 4.5 4.6 ******************************************************************************* ******************************************************************************* Ephemeris / API_USER Tue Oct 6 16:41:54 2026 Pasadena, USA / Horizons ******************************************************************************* Target body name: Saturn (699) {source: sat441l} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2026-Oct-01 00:00:00.0000 UT-04:00 Stop time : A.D. 2026-Oct-31 00:00:00.0000 UT-04:00 Step-size : 1440 minutes ******************************************************************************* Target pole/equ : IAU_SATURN {West-longitude positive} Target radii : 60268.0, 60268.0, 54364.0 km {Equator_a, b, pole_c} Center geodetic : 0.0, 0.0, -6378.137 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441} Rel. light bend : Sun {source: DE441} Rel. lght bnd GM: 1.3271E+11 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian Time zone : UT-04:00 EOP file : eop.261006.p270102 EOP coverage : DATA-BASED 1962-JAN-20 TO 2026-OCT-06. PREDICTS-> 2027-JAN-01 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 cut-offs 3: RA/DEC angular rate ( 0.0=NO ) Table format : Comma Separated Values (spreadsheet) ******************************************************************************************************************************* Date_(ZONE)_HR:MN:SS, , , R.A.____(a-app), DEC_____(a-app), delta, deldot, Ang-diam, APmag, S-brt, Cnst ******************************************************************************************************************************* $$SOE 2026-Oct-01 00:00:00, , , 00 46 46.665804, +02 04 36.96684, 8.43605494130227, -1.8203066, 19.70049, 0.344, 6.551, Cet 2026-Oct-02 00:00:00, , , 00 46 29.397286, +02 02 45.09172, 8.43515676269650, -1.2897869, 19.70259, 0.338, 6.546, Cet 2026-Oct-03 00:00:00, , , 00 46 12.096788, +02 00 53.36597, 8.43456537456613, -0.7579075, 19.70397, 0.333, 6.541, Cet 2026-Oct-04 00:00:00, , , 00 45 54.771616, +01 59 01.83716, 8.43428150709003, -0.2249439, 19.70464, 0.331, 6.539, Cet 2026-Oct-05 00:00:00, , , 00 45 37.429445, +01 57 10.55491, 8.43430573519077, 0.3090083, 19.70458, 0.331, 6.539, Cet 2026-Oct-06 00:00:00, , , 00 45 20.078893, +01 55 19.57342, 8.43463857643781, 0.8436549, 19.70380, 0.336, 6.543, Cet 2026-Oct-07 00:00:00, , , 00 45 02.729670, +01 53 28.95384, 8.43528029936901, 1.3786087, 19.70230, 0.341, 6.549, Cet 2026-Oct-08 00:00:00, , , 00 44 45.392362, +01 51 38.76410, 8.43623101010735, 1.9136149, 19.70008, 0.348, 6.555, Cet 2026-Oct-09 00:00:00, , , 00 44 28.078195, +01 49 49.07713, 8.43749070194254, 2.4485162, 19.69714, 0.354, 6.561, Cet 2026-Oct-10 00:00:00, , , 00 44 10.798759, +01 47 59.96813, 8.43905917168131, 2.9828344, 19.69348, 0.360, 6.567, Cet 2026-Oct-11 00:00:00, , , 00 43 53.565367, +01 46 11.51169, 8.44093603365263, 3.5164024, 19.68910, 0.365, 6.572, Cet 2026-Oct-12 00:00:00, , , 00 43 36.388923, +01 44 23.77904, 8.44312071937999, 4.0487333, 19.68401, 0.371, 6.576, Cet 2026-Oct-13 00:00:00, , , 00 43 19.279563, +01 42 36.83696, 8.44561246587298, 4.5796970, 19.67820, 0.376, 6.581, Cet 2026-Oct-14 00:00:00, , , 00 43 02.246856, +01 40 50.74706, 8.44841041695767, 5.1090630, 19.67168, 0.380, 6.585, Cet 2026-Oct-15 00:00:00, , , 00 42 45.300030, +01 39 05.56659, 8.45151355818731, 5.6364389, 19.66446, 0.385, 6.589, Cet 2026-Oct-16 00:00:00, , , 00 42 28.447993, +01 37 21.34983, 8.45492060446393, 6.1614474, 19.65653, 0.390, 6.592, Cet 2026-Oct-17 00:00:00, , , 00 42 11.699389, +01 35 38.14876, 8.45863015272863, 6.6838819, 19.64791, 0.394, 6.596, Cet 2026-Oct-18 00:00:00, , , 00 41 55.062804, +01 33 56.01402, 8.46264058088406, 7.2033648, 19.63860, 0.399, 6.600, Cet 2026-Oct-19 00:00:00, , , 00 41 38.546695, +01 32 14.99537, 8.46695015645979, 7.7197353, 19.62861, 0.403, 6.603, Cet 2026-Oct-20 00:00:00, , , 00 41 22.159601, +01 30 35.14224, 8.47155698513821, 8.2326771, 19.61793, 0.408, 6.606, Cet 2026-Oct-21 00:00:00, , , 00 41 05.910100, +01 28 56.50455, 8.47645899989888, 8.7418996, 19.60659, 0.412, 6.609, Cet 2026-Oct-22 00:00:00, , , 00 40 49.806771, +01 27 19.13334, 8.48165405459123, 9.2474821, 19.59458, 0.416, 6.612, Cet 2026-Oct-23 00:00:00, , , 00 40 33.858589, +01 25 43.08128, 8.48714002308643, 9.7492414, 19.58191, 0.421, 6.615, Cet 2026-Oct-24 00:00:00, , , 00 40 18.074848, +01 24 08.40386, 8.49291467354306, 10.2471844, 19.56860, 0.425, 6.618, Cet 2026-Oct-25 00:00:00, , , 00 40 02.465128, +01 22 35.15895, 8.49897580151460, 10.7412674, 19.55464, 0.430, 6.621, Cet 2026-Oct-26 00:00:00, , , 00 39 47.038943, +01 21 03.40553, 8.50532118067859, 11.2315412, 19.54005, 0.435, 6.624, Cet 2026-Oct-27 00:00:00, , , 00 39 31.805211, +01 19 33.20033, 8.51194864543453, 11.7181417, 19.52484, 0.439, 6.627, Cet 2026-Oct-28 00:00:00, , , 00 39 16.771821, +01 18 04.59392, 8.51885615386627, 12.2012790, 19.50901, 0.444, 6.630, Cet 2026-Oct-29 00:00:00, , , 00 39 01.945590, +01 16 37.62872, 8.52604162665232, 12.6807097, 19.49257, 0.448, 6.633, Cet 2026-Oct-30 00:00:00, , , 00 38 47.332219, +01 15 12.33991, 8.53350295867811, 13.1565394, 19.47552, 0.453, 6.636, Cet 2026-Oct-31 00:00:00, , , 00 38 32.937181, +01 13 48.75880, 8.54123801079910, 13.6285377, 19.45789, 0.458, 6.638, Cet $$EOE ******************************************************************************************************************************* Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 using integer leap-seconds for 1972 and later years. Conversion from the internal Barycentric Dynamical Time (TDB) of solar system dynamics to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion from TDB on Earth regardless of observer location within the solar system, although clock rates may differ due to the local gravity field and no analog to "UT" may be defined for that location. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. CALENDAR SYSTEM Mixed calendar mode was active such that calendar dates after AD 1582-Oct-15 (if any) are in the modern Gregorian system. Dates prior to 1582-Oct-5 (if any) are in the Julian calendar system, which is automatically extended for dates prior to its adoption on 45-Jan-1 BC. The Julian calendar is useful for matching historical dates. The Gregorian calendar more accurately corresponds to the Earth's orbital motion and seasons. A "Gregorian-only" calendar mode is available if such physical events are the primary interest. NOTE: A time-zone correction has been requested. See header. NOTE: "n.a." in output means quantity "not available" at the print-time. 'R.A.____(a-app), DEC_____(a-app),' = Airless apparent right ascension and declination of the target center with respect to an instantaneous reference frame defined by the Earth equator of-date (z-axis) and meridian containing the Earth equinox of-date (x-axis EOP-corrected IAU76/80). Compensated for down-leg light-time delay gravitational deflection of light, stellar aberration, precession & nutation. Note: equinox (RA origin) is offset -53 mas from the of-date frame defined by the IAU06/00a P & N system. Units: RA in hours-minutes-seconds of time, HH MM SS.ff{ffff} DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff} 'delta, deldot,' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'Ang-diam,' = The equatorial angular width of the target body full disk, if it were fully illuminated and visible to the observer. If the target body diameter is unknown "n.a." is output. Units: ARCSECONDS 'APmag, S-brt,' = Saturn's approximate apparent visual magnitude and surface brightness. The value includes the ring system when the solar phase angle of the observer is less than 6.5 degrees (typical when observed from Earth) AND effective ring inclination is less than 27 degrees. Otherwise, the value is that of the globe only (no rings). An "n.a." will be output if outside the range of phase-angles for which the model is valid. For Earth-based observers, the estimated dimming due to atmospheric absorption (extinction) is available as a separate, requestable quantity. Surface brightness is the average airless visual magnitude of a square-arcsecond of the illuminated portion of the apparent disk. MAGNITUDES & MAGNITUDES PER SQUARE ARCSECOND 'Cnst,' = Constellation ID; the 3-letter abbreviation for the name of the constellation containing the target centers' astrometric position as defined by IAU (1930) boundary delineation. See documentation for list of abbreviations. Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA General site: https://ssd.jpl.nasa.gov/ Mailing list: https://ssd.jpl.nasa.gov/email_list.html System news : https://ssd.jpl.nasa.gov/horizons/news.html User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x API https://ssd-api.jpl.nasa.gov/doc/horizons.html command-line telnet ssd.jpl.nasa.gov 6775 e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/horizons_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Inquiries : Jon.D.Giorgini@jpl.nasa.gov *******************************************************************************************************************************

•