******************************************************************************* JPL/HORIZONS 19 Fortuna 2011-May-27 17:36:01 Rec #: 19 (+COV) Soln.date: 2011-May-20_12:52:31 # obs: 2066 (1852-2011) FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs): EPOCH= 2449945.5 ! 1995-Aug-16.00 (CT) Residual RMS= .34735 EC= .1595440907926987 QR= 2.05164957000217 TP= 2449473.502745528 OM= 211.6300899595684 W= 181.8852071585934 IN= 1.571639260308359 A= 2.441115051397805 MA= 121.972288853603 ADIST= 2.83058053279344 PER= 3.81409 N= .258417369 ANGMOM= .026532408 DAN= 2.83029 DDN= 2.0518 L= 33.5145884 B= -.051696 TP= 1994-May-01.0027455 Physical parameters (KM, SEC, rotational period in hours): GM= n.a. RAD= 100. ROTPER= 7.4432 H= 7.13 G= .100 B-V= .719 ALBEDO= .037 STYP= Ch ASTEROID comments: 1: soln ref.= JPL#79, OCC=0 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Fri May 27 17:36:01 2011 Pasadena, USA / Horizons ******************************************************************************* Target body name: 19 Fortuna {source: JPL#79} Center body name: Earth (399) {source: DE405} Center-site name: Mauna Kea ******************************************************************************* Start time : A.D. 2011-May-29 10:00:00.0000 UT Stop time : A.D. 2011-May-29 12:30:00.0000 UT Step-size : 10 minutes ******************************************************************************* Target pole/equ : No model available Target radii : 100.0 km Center geodetic : 204.527800,19.8261152,4.2078485 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 204.527800,6006.35451,2151.0229 {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} 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 Small perturbers: Ceres, Pallas, Vesta {source: SB405-CPV-2} Small body GMs : 6.32E+01, 1.43E+01, 1.78E+01 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL RTS-only print : NO EOP file : eop.110527.p110818 EOP coverage : DATA-BASED 1962-JAN-20 TO 2011-MAY-27. PREDICTS-> 2011-AUG-17 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 ) ******************************************************************************* Initial FK5/J2000.0 heliocentric ecliptic osculating elements (AU, DAYS, DEG): EPOCH= 2449945.5 ! 1995-Aug-16.00 (CT) Residual RMS= .34735 EC= .1595440907926987 QR= 2.05164957000217 TP= 2449473.502745528 OM= 211.6300899595684 W= 181.8852071585934 IN= 1.571639260308359 Asteroid physical parameters (KM, SEC, rotational period in hours): GM= n.a. RAD= 100. ROTPER= 7.4432 H= 7.13 G= .100 B-V= .719 ALBEDO= .037 STYP= Ch ******************************************************************************* Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC dRA*cosD d(DEC)/dt APmag S-brt ******************************************************************************* $$SOE 2011-May-29 10:00 12 32 12.00 -03 39 09.9 0.015524 1.038992 12.05 7.29 2011-May-29 10:10 12 32 12.00 -03 39 09.7 0.057161 1.038033 12.05 7.29 2011-May-29 10:20 12 32 12.00 -03 39 09.5 0.099885 1.036971 12.05 7.29 2011-May-29 10:30 12 32 12.00 -03 39 09.4 0.143627 1.035803 12.05 7.29 2011-May-29 10:40 12 32 12.01 -03 39 09.2 0.188314 1.034527 12.05 7.29 2011-May-29 10:50 12 32 12.01 -03 39 09.0 0.233872 1.033139 12.05 7.29 2011-May-29 11:00 12 32 12.01 -03 39 08.9 0.280224 1.031637 12.05 7.29 2011-May-29 11:10 12 32 12.01 -03 39 08.7 0.327294 1.030020 12.05 7.29 2011-May-29 11:20 12 32 12.02 -03 39 08.5 0.375002 1.028286 12.05 7.29 2011-May-29 11:30 12 32 12.02 -03 39 08.3 0.423269 1.026431 12.05 7.29 2011-May-29 11:40 12 32 12.03 -03 39 08.2 0.472013 1.024457 12.05 7.29 2011-May-29 11:50 12 32 12.03 -03 39 08.0 0.521153 1.022360 12.05 7.29 2011-May-29 12:00 12 32 12.04 -03 39 07.8 0.570605 1.020140 12.05 7.29 2011-May-29 12:10 12 32 12.05 -03 39 07.7 0.620286 1.017796 12.05 7.29 2011-May-29 12:20 12 32 12.05 -03 39 07.5 0.670114 1.015328 12.05 7.29 2011-May-29 12:30 s 12 32 12.06 -03 39 07.3 0.720002 1.012736 12.05 7.29 $$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 WITH TARGET RISE/TRANSIT/SET MARKER (OBSERVING SITE) The solar-presence symbol is immediately followed by another marker symbol: 'm' Refracted upper-limb of Moon on or above apparent horizon ' ' Refracted upper-limb of Moon below apparent horizon OR geocentric 'r' Rise (target body on or above cut-off RTS elevation) 't' Transit (target body at or past local maximum RTS elevation) 's' Set (target body on or below cut-off RTS elevation) RTS MARKERS (TVH) Rise and set are with respect to the reference ellipsoid true visual horizon defined by the elevation cut-off angle. Horizon dip and yellow-light refraction (Earth only) are considered. Accuracy is < or = to twice the requested search step-size. R.A._(ICRF/J2000.0)_DEC = J2000.0 astrometric right ascension and declination of target center. Corrected for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f) dRA*cosD d(DEC)/dt = The rate of change of target center apparent RA and DEC (airless). d(RA)/dt is multiplied by the cosine of the declination. Units: ARCSECONDS PER HOUR APmag S-brt = Asteroid's approximate apparent visual magnitude & surface brightness: APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2) In principle, accurate to ~ +/- 0.1 magnitude. For solar phase angles > 90 deg, the error could exceed 1 magnitude. No values are output for phase angles greater than 120 degrees, since the errors could be large and unknown. Units: NONE & VISUAL MAGNITUDES PER SQUARE ARCSECOND 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 *******************************************************************************