*********************************************************************************************************************** Date__(UT)__HR:MN APmag S-brt Illu% Def_illu Ang-diam Ob-lon Ob-lat SN.ang SN.dist NP.ang NP.dist S-T-O *********************************************************************************************************************** 2006-Aug-17 16:32 *m -26.72 -10.59 100.000 .000 1895.854 96.77 6.76 n.a. n.a. 16.83 941.34 0.0000 2006-Aug-17 17:32 *m -26.72 -10.59 100.000 .000 1895.878 96.22 6.76 n.a. n.a. 16.85 941.35 0.0000 2006-Aug-17 18:32 *m -26.72 -10.59 100.000 .000 1895.898 95.67 6.76 n.a. n.a. 16.86 941.35 0.0000 2006-Aug-17 19:32 *m -26.72 -10.59 100.000 .000 1895.914 95.11 6.76 n.a. n.a. 16.88 941.36 0.0000 2006-Aug-17 20:32 *m -26.72 -10.59 100.000 .000 1895.927 94.56 6.77 n.a. n.a. 16.89 941.36 0.0000 2006-Aug-17 21:32 *m -26.72 -10.59 100.000 .000 1895.935 94.01 6.77 n.a. n.a. 16.90 941.36 0.0000 2006-Aug-17 22:32 *m -26.72 -10.59 100.000 .000 1895.940 93.46 6.77 n.a. n.a. 16.92 941.36 0.0000 2006-Aug-17 23:32 * -26.72 -10.59 100.000 .000 1895.942 92.91 6.77 n.a. n.a. 16.93 941.36 0.0000 *********************************************************************************************************************** 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. The uniform Coordinate Time scale is used internally. 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 APmag S-brt = Sun's approximate apparent visual magnitude & surface brightness. APmag= M - 5 + 5*log10(d), where M= 4.83 and d= distance from Sun in parsecs. Units: none & VISUAL MAGNITUDES PER SQUARE ARCSECOND Illu% = Fraction of target circular disk illuminated by Sun (phase), as seen by observer. Units: PERCENT Def_illu = Defect of illumination. Maximum angular width of target circular disk diameter not illuminated by the Sun. Units: ARCSECONDS Ang-diam = The equatorial angular width of the target body full disk, if it were fully visible to the observer. Units: ARCSECONDS Ob-lon Ob-lat = Apparent planetographic ("geodetic") longitude and latitude (IAU2000 model) of the center of the target disk seen by the observer at print-time. Light travel-time from target to observer is taken into account. For the gas giants Jupiter, Saturn, Uranus and Neptune, IAU2000 longitude is based on the "Set 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. Units: DEGREES SN.ang SN.ds = Target sub-solar point position angle (CCW, or east, with respect to the direction of the true-of-date Celestial North Pole) and its' angular distance from the sub-observer point (center of disk) at print time. Negative distance indicates sub-solar point on hidden hemisphere. Units: DEGREES and ARCSECONDS NP.ang NP.ds = Target's North pole position angle (CCW, or east, with respect to direction of true-of-date Celestial North Pole) and its' angular distance from the sub-observer point (center of disk) at observation time. Negative distance indicates the planet's North pole is on the hidden hemisphere. Units: DEGREES and ARCSECONDS S-T-O = Sun-Target-Observer angle; target's apparent PHASE ANGLE as seen at observer's location at print time. Units: DEGREES 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 *********************************************************************************************************************** ******************************************************************************* Revised: Sep 12, 1996 Sun 10 PHYSICAL PROPERTIES: GM (10^11 km^3/s^2) = 1.3271243994 Mass (10^30 kg) = 1.9891 Radius (photosphere) = 6.960(10^5) km Angular diam at 1 AU = 1919.3" Mean density = 1.408 g/cm^3 Surface gravity = 274.0 m/s^2 Moment of inertia = 0.059 Escape velocity = 617.7 km/s Adopted sidereal per = 25.38 d Pole (RA,DEC in deg.) = 286.13,63.87 Obliquity to ecliptic = 7 deg 15' Solar constant (1 AU) = 1367.6 W/m^2 Solar lumin.(erg/s) = 3.846(10^33) Mass-energy conv rate = 4.3(10^12 gm/s) Effective temp (K) = 5778 Surf. temp (photosphr)= 6600 K (bottom) Surf. temp (photosphr)= 4400 K (top) Photospheric depth = ~400 km Chromospheric depth = ~2500 km Sunspot cycle = 11.4 yr Cycle 22 sunspot min. = 1991 A.D. Motn. rel to nrby strs= apex : RA=271 deg; DEC=+30 deg speed: 19.4 km/s = 0.0112 AU/day Motn. rel to 2.73K BB = apex : l=264.7+-0.8; b=48.2+-0.5 speed: 369 +-11 km/s ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Thu Aug 17 10:16:14 2006 Pasadena, USA / Horizons ******************************************************************************* Target body name: Sun (10) {source: DE405} Center body name: Earth (399) {source: DE405} Center-site name: (user defined site below) ******************************************************************************* Start time : A.D. 2006-Aug-17 16:32:00.0000 UT Stop time : A.D. 2006-Aug-18 00:00:00.0000 UT Step-size : 60 minutes ******************************************************************************* Target pole/equ : IAU_SUN {East-longitude +} Target radii : 696000.0 x 696000.0 x 696000.0 k{Equator, meridian, pole} Center geodetic : 248.109000,40.7564473,-.0007394 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 248.109000,4838.29537,4141.9690 {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 {source: DE405+DE406} Interfering body: MOON (Req= 1737.400) km {source: DE405} Deflecting body : Sun, EARTH {source: DE405} Deflecting GMs : 1.3271E+11, 3.9860E+05 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL EOP file : eop.060815.p061106 EOP coverage : DATA-BASED 1962-JAN-20 TO 2006-AUG-15. PREDICTS-> 2006-NOV-05 Units conversion: 1 AU= 149597870.691 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 )