******************************************************************************* Revised: July 31, 2013 Sun 10 PHYSICAL PROPERTIES (updated 2024-Mar-04): GM, km^3/s^2 = 132712440041.93938 Mass, 10^24 kg = ~1988500 Vol. mean radius, km = 695700 Volume, 10^12 km^3 = 1412000 Solar radius (IAU2015)= 695700 km Mean density, g/cm^3 = 1.408 Radius (photosphere) = 696500 km Angular diam at 1 AU = 1919.3" Photosphere temp., K = 6600 (bottom) Photosphere temp., K = 4400(top) Photospheric depth = ~500 km Chromospheric depth = ~2500 km Flatness, f = 0.00005 Adopted sid. rot. per.= 25.38 d Surface gravity = 274.0 m/s^2 Escape speed, km/s = 617.7 Pole (RA,DEC), deg. = (286.13, 63.87) Obliquity to ecliptic = 7.25 deg. Solar constant (1 AU) = 1367.6 W/m^2 Luminosity, 10^24 J/s = 382.8 Mass-energy conv rate = 4.260 x 10^9 kg/s Effective temp, K = 5772 Sunspot cycle = 11.4 yr Cycle 24 sunspot min. = 2008 A.D. Motion relative to nearby stars = apex : R.A.= 271 deg.; DEC.= +30 deg. speed: 19.4 km/s (0.0112 au/day) Motion relative to 2.73K BB/CBR = apex : l= 264.7 +- 0.8; b= 48.2 +- 0.5 deg. speed: 369 +-11 km/s ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat Apr 27 04:20:51 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Sun (10) {source: PIONEER_10} Center body name: Pioneer 10 (spacecraft) (-23) {source: PIONEER_10} Center-site name: BODYCENTRIC ******************************************************************************* Start time : A.D. 2023-Jul-01 00:00:00.0000 UT Stop time : A.D. 2023-Aug-01 00:00:00.0000 UT Step-size : 1440 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, 0.0 {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 : ICRF Center radii : undefined Target primary : Sun Vis. interferer : None Rel. light bend : Sun {source: PIONEER_10} 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 EOP file : eop.240426.p240720 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-26. PREDICTS-> 2024-JUL-19 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 n.a. , 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 delta deldot *************************************************** $$SOE 2023-Jul-01 00:00 133.800168114790 11.8715890 2023-Jul-02 00:00 133.807024520857 11.8715543 2023-Jul-03 00:00 133.813880906892 11.8715197 2023-Jul-04 00:00 133.820737272909 11.8714850 2023-Jul-05 00:00 133.827593618927 11.8714504 2023-Jul-06 00:00 133.834449944966 11.8714158 2023-Jul-07 00:00 133.841306251050 11.8713813 2023-Jul-08 00:00 133.848162537203 11.8713468 2023-Jul-09 00:00 133.855018803446 11.8713124 2023-Jul-10 00:00 133.861875049801 11.8712779 2023-Jul-11 00:00 133.868731276285 11.8712436 2023-Jul-12 00:00 133.875587482914 11.8712092 2023-Jul-13 00:00 133.882443669700 11.8711748 2023-Jul-14 00:00 133.889299836652 11.8711405 2023-Jul-15 00:00 133.896155983773 11.8711062 2023-Jul-16 00:00 133.903012111065 11.8710718 2023-Jul-17 00:00 133.909868218526 11.8710375 2023-Jul-18 00:00 133.916724306149 11.8710031 2023-Jul-19 00:00 133.923580373925 11.8709688 2023-Jul-20 00:00 133.930436421840 11.8709344 2023-Jul-21 00:00 133.937292449880 11.8708999 2023-Jul-22 00:00 133.944148458024 11.8708655 2023-Jul-23 00:00 133.951004446251 11.8708310 2023-Jul-24 00:00 133.957860414538 11.8707964 2023-Jul-25 00:00 133.964716362857 11.8707618 2023-Jul-26 00:00 133.971572291179 11.8707272 2023-Jul-27 00:00 133.978428199473 11.8706925 2023-Jul-28 00:00 133.985284087707 11.8706577 2023-Jul-29 00:00 133.992139955845 11.8706229 2023-Jul-30 00:00 133.998995803851 11.8705880 2023-Jul-31 00:00 134.005851631685 11.8705530 2023-Aug-01 00:00 134.012707439308 11.8705180 $$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. '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 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 ******************************************************************************* !$$SOF COMMAND = 'Sun' START_TIME = '2023-07-01' STOP_TIME = '2023-08-01' STEP_SIZE = '1 day' QUANTITIES = '20' CENTER = '500@-23'