API VERSION: 1.2 API SOURCE: NASA/JPL Horizons API ******************************************************************************* Ephemeris / API_USER Fri Apr 19 04:33:45 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Sun (10) {source: DE441} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2023-Jun-21 12:00:00.0000 UT Stop time : A.D. 2023-Jun-21 18:00:00.0000 UT Step-size : 60 minutes ******************************************************************************* Target pole/equ : IAU_SUN {East-longitude positive} Target radii : 695700.0, 695700.0, 695700.0 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 : DEG Time format : CAL Calendar mode : Mixed Julian/Gregorian EOP file : eop.240418.p240712 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-18. PREDICTS-> 2024-JUL-11 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 ) **************************************************************************************** Date__(UT)__HR:MN R.A.___(ICRF)___DEC R.A._(a-appar)_DEC. ObsEcLon ObsEcLat **************************************************************************************** $$SOE 2023-Jun-21 12:00 89.52285 23.43572 89.87150 23.43840 89.8821009 0.0002094 2023-Jun-21 13:00 89.56620 23.43585 89.91485 23.43843 89.9218765 0.0002094 2023-Jun-21 14:00 89.60955 23.43596 89.95820 23.43845 89.9616517 0.0002093 2023-Jun-21 15:00 89.65290 23.43606 90.00155 23.43846 90.0014266 0.0002092 2023-Jun-21 16:00 89.69625 23.43615 90.04491 23.43845 90.0412011 0.0002091 2023-Jun-21 17:00 89.73959 23.43623 90.08826 23.43843 90.0809754 0.0002090 2023-Jun-21 18:00 89.78294 23.43630 90.13161 23.43840 90.1207493 0.0002088 $$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: "n.a." in output means quantity "not available" at the print-time. 'R.A.___(ICRF)___DEC' = Astrometric right ascension and declination of the target center with respect to the observing site (coordinate origin) in the reference frame of the planetary ephemeris (ICRF). Compensated for down-leg light-time delay aberration. Units: RA in decimal degrees, ddd.fffff{ffff} DEC in decimal degrees, sdd.fffff{ffff} 'R.A._(a-appar)_DEC.' = 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 decimal degrees, ddd.fffff{ffff} DEC in decimal degrees sdd.fffff{ffff} 'ObsEcLon ObsEcLat' = Observer-centered IAU76/80 ecliptic-of-date longitude and latitude of the target centers' apparent position, with light-time, gravitational deflection of light, and stellar aberrations. Units: DEGREES 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/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ****************************************************************************************