********************************************************************************************************* Date__(UT)__HR:MN APmag S-brt Illu% Def_illu Ang-diam SN.ang SN.dist NP.ang NP.dist S-T-O ********************************************************************************************************* 2006-Aug-18 12:00 Nm -1.07 2.23 81.535 1.055 5.712 110.28 2.22 15.39 2.84 50.8986 2006-Aug-19 12:00 Nm -1.14 2.16 84.437 .873 5.609 111.77 2.03 16.18 2.79 46.4690 2006-Aug-20 12:00 Nm -1.21 2.09 87.087 .712 5.515 113.34 1.85 16.96 2.74 42.1208 2006-Aug-21 12:00 Nm -1.27 2.02 89.469 .572 5.428 115.02 1.67 17.73 2.70 37.8729 2006-Aug-22 12:00 Nm -1.33 1.95 91.577 .451 5.350 116.82 1.49 18.48 2.66 33.7429 2006-Aug-23 12:00 N -1.39 1.89 93.411 .348 5.280 118.81 1.31 19.22 2.63 29.7466 2006-Aug-24 12:00 N -1.44 1.83 94.979 .262 5.216 121.06 1.14 19.93 2.60 25.8982 2006-Aug-25 12:00 N -1.50 1.76 96.290 .191 5.160 123.69 0.98 20.62 2.57 22.2110 2006-Aug-26 12:00 N -1.55 1.70 97.361 .135 5.110 126.88 0.82 21.29 2.54 18.6986 2006-Aug-27 12:00 N -1.60 1.64 98.210 .091 5.065 130.97 0.67 21.92 2.52 15.3787 2006-Aug-28 12:00 N -1.65 1.58 98.856 .057 5.026 136.54 0.53 22.53 2.50 12.2792 2006-Aug-29 12:00 N -1.69 1.53 99.321 .034 4.992 144.79 0.41 23.11 2.49 9.4561 2006-Aug-30 12:00 N -1.73 1.48 99.623 .019 4.963 158.10 0.30 23.65 2.47 7.0383 2006-Aug-31 12:00 N -1.74 1.46 99.783 .011 4.938 180.45 0.23 24.17 2.46 5.3343 2006-Sep-01 12:00 N -1.71 1.48 99.819 .009 4.917 211.67 0.21 24.65 2.45 4.8702 2006-Sep-02 12:00 N -1.64 1.55 99.748 .012 4.900 238.96 0.25 25.10 2.44 5.7550 2006-Sep-03 12:00 N -1.54 1.63 99.584 .020 4.886 255.85 0.31 25.52 2.43 7.3955 2006-Sep-04 12:00 N -1.44 1.73 99.341 .032 4.876 265.88 0.39 25.91 2.43 9.3116 2006-Sep-05 12:00 N -1.34 1.83 99.031 .047 4.868 272.26 0.48 26.28 2.43 11.2982 2006-Sep-06 12:00 N -1.24 1.92 98.664 .065 4.864 276.64 0.56 26.61 2.42 13.2747 2006-Sep-07 12:00 Nm -1.15 2.00 98.249 .085 4.862 279.83 0.64 26.91 2.42 15.2084 2006-Sep-08 12:00 Am -1.06 2.09 97.793 .107 4.863 282.27 0.71 27.19 2.42 17.0859 2006-Sep-09 12:00 Am -0.98 2.16 97.303 .131 4.866 284.19 0.79 27.44 2.43 18.9029 2006-Sep-10 12:00 Am -0.90 2.24 96.785 .157 4.871 285.76 0.86 27.66 2.43 20.6593 2006-Sep-11 12:00 Am -0.83 2.31 96.242 .183 4.878 287.05 0.93 27.86 2.43 22.3571 2006-Sep-12 12:00 Am -0.76 2.37 95.677 .211 4.888 288.14 0.99 28.04 2.44 23.9994 2006-Sep-13 12:00 Am -0.70 2.44 95.095 .240 4.899 289.07 1.06 28.19 2.44 25.5901 2006-Sep-14 12:00 Am -0.64 2.49 94.497 .270 4.913 289.87 1.12 28.31 2.45 27.1333 2006-Sep-15 12:00 Am -0.58 2.55 93.885 .301 4.929 290.57 1.18 28.42 2.46 28.6331 2006-Sep-16 12:00 Am -0.53 2.60 93.260 .333 4.946 291.17 1.24 28.50 2.47 30.0937 2006-Sep-17 12:00 Am -0.48 2.65 92.623 .366 4.965 291.70 1.30 28.56 2.48 31.5193 2006-Sep-18 12:00 Am -0.44 2.70 91.974 .400 4.986 292.15 1.35 28.60 2.49 32.9139 2006-Sep-19 12:00 Am -0.40 2.74 91.314 .435 5.009 292.56 1.41 28.62 2.50 34.2816 $$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. 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 = Target's approximate apparent visual magnitude & surface brightness. For planets and satellites, values are available only for solar phase angles in the range generally visible from Earth. This is to avoid extrapolation of models beyond their valid (data-based) limits. 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 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 Mercury 199 / 1 GEOPHYSICAL DATA (updated 2006-Feb-27): Mean radius (km) = 2440(+-1) Density (g cm^-3) = 5.427 Mass (10^23 kg ) = 3.302 Flattening, f = Volume (x10^10 km^3) = 6.085 Semi-major axis = Sidereal rot. period = 58.6462 d Rot. Rate (x10^5 s) = 0.124001 Mean solar day = 175.9421 d Polar gravity ms^-2 = Mom. of Inertia = 0.33 Equ. gravity ms^-2 = 3.701 Core radius (km) = ~1600 Potential Love # k2 = GM (km^3 s^-2) = 22032.09 Equatorial Radius, Re = 2440 km GM 1-sigma (km^3 s^-2)= +-0.91 Mass ratio (sun/plnt) = 6023600 Atmos. pressure (bar) = Max. angular diam. = 11.0" Mean Temperature (K) = Visual mag. V(1,0) = -0.42 Geometric albedo = 0.106 Obliquity to orbit = ~0.1 deg Sidereal orb. per. = 0.2408467 y Orbit vel. km/s = 47.8725 Sidereal orb. per. = 87.969257 d Escape vel. km/s = 4.435 Hill's sphere rad. Rp = 94.4 Planetary Solar Const = 9936.9 (Wm^2) ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Tue Aug 15 13:02:07 2006 Pasadena, USA / Horizons ******************************************************************************* Target body name: Mercury (199) {source: DE405} Center body name: Earth (399) {source: DE405} Center-site name: (user defined site below) ******************************************************************************* Start time : A.D. 2006-Aug-18 12:00:00.0000 UT Stop time : A.D. 2006-Sep-20 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : IAU_MERCURY {East-longitude -} Target radii : 2439.7 x 2439.7 x 2439.7 km {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.060811.p061102 EOP coverage : DATA-BASED 1962-JAN-20 TO 2006-AUG-11. PREDICTS-> 2006-NOV-01 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 )