******************************************************************************* JPL/HORIZONS (2007 TU24) 2008-Jan-27 15:16:13 Rec #:615313 (+COV) Soln.date: 2008-Jan-27_00:56:08 # obs: 155 (2007-2008) FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs): EPOCH= 2454493.5 ! 2008-Jan-28.00 (CT) Residual RMS= .38857 EC= .5317881587113729 QR= .946531403965324 TP= 2454473.305577054 OM= 127.1603283409427 W= 333.616451009216 IN= 5.809591842309396 A= 2.021587923449887 MA= 6.924629950926341 ADIST= 3.096644442934451 PER= 2.8744 N= .342898134 ANGMOM= .020713253 DAN= .98204 DDN= 2.76905 L= 100.89405 B= -2.5781031 TP= 2008-Jan-07.8055771 Physical parameters (KM, SEC, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 20.4 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#30, PHA OCC=2 radar( 0 delay, 2 Dop.) 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sun Jan 27 15:16:13 2008 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2007 TU24) {source: JPL#30} Center body name: Earth (399) {source: DE405} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2008-Jan-27 00:00:00.0000 UT Stop time : A.D. 2008-Feb-26 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : No model available Target radii : (unavailable) Center geodetic : .000000000,.000000000,.00000000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: .000000000,.000000000,.00000000 {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 EOP file : eop.080125.p080417 EOP coverage : DATA-BASED 1962-JAN-20 TO 2008-JAN-25. PREDICTS-> 2008-APR-16 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= 2454493.5 ! 2008-Jan-28.00 (CT) Residual RMS= .38857 EC= .5317881587113729 QR= .946531403965324 TP= 2454473.305577054 OM= 127.1603283409427 W= 333.616451009216 IN= 5.809591842309396 Asteroid physical parameters (KM, SEC, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 20.4 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************************************* Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC APmag delta deldot S-O-T /r S-T-O ******************************************************************************************************* $$SOE 2008-Jan-27 00:00 00 37 23.17 -08 27 34.8 15.75 .013058299439448 -8.8124241 59.5932 /T 119.7457 2008-Jan-28 00:00 00 50 15.02 +01 49 54.5 14.36 .008107916316727 -8.1796846 65.0008 /T 114.5689 2008-Jan-29 00:00 01 39 37.46 +35 49 44.6 11.70 .004162217341393 -4.1972899 88.4173 /T 91.3398 2008-Jan-30 00:00 09 58 18.87 +65 21 06.3 10.71 .005042137684812 6.2431974 131.1038 /L 48.6765 2008-Jan-31 00:00 11 36 01.28 +44 54 02.6 11.94 .009485545357905 8.4629902 136.2059 /L 43.4161 2008-Feb-01 00:00 11 53 11.93 +37 18 22.9 12.87 .014520565061387 8.8854825 136.2722 /L 43.1516 2008-Feb-02 00:00 12 00 07.38 +33 36 31.2 13.53 .019698639296756 9.0265012 136.3644 /L 42.8578 2008-Feb-03 00:00 12 03 46.44 +31 26 38.5 14.04 .024932533782347 9.0927262 136.6778 /L 42.3471 2008-Feb-04 00:00 12 05 57.37 +30 01 36.6 14.45 .030195892496623 9.1327088 137.1508 /L 41.6832 2008-Feb-05 00:00 12 07 20.63 +29 01 39.1 14.78 .035478919802259 9.1624294 137.7307 /L 40.9200 2008-Feb-06 00:00 12 08 14.77 +28 17 04.3 15.07 .040777829963806 9.1884259 138.3833 /L 40.0919 2008-Feb-07 00:00 12 08 49.55 +27 42 34.2 15.32 .046091473776338 9.2138115 139.0870 /L 39.2209 2008-Feb-08 00:00 12 09 10.60 +27 15 00.4 15.55 .051420023145926 9.2402376 139.8271 /L 38.3218 2008-Feb-09 00:00 12 09 21.44 +26 52 24.2 15.75 .056764375740427 9.2686453 140.5938 /L 37.4046 2008-Feb-10 00:00 12 09 24.37 +26 33 27.0 15.93 .062125851907247 9.2995949 141.3798 /L 36.4764 2008-Feb-11 00:00 12 09 21.00 +26 17 14.7 16.09 .067506026751960 9.3334285 142.1796 /L 35.5429 2008-Feb-12 00:00 12 09 12.48 +26 03 08.8 16.24 .072906633250266 9.3703627 142.9889 /L 34.6081 2008-Feb-13 00:00 12 08 59.68 +25 50 41.4 16.38 .078329507346691 9.4105454 143.8044 /L 33.6755 2008-Feb-14 00:00 12 08 43.25 +25 39 31.6 16.51 .083776559949011 9.4540936 144.6231 /L 32.7477 2008-Feb-15 00:00 12 08 23.70 +25 29 23.3 16.64 .089249766761878 9.5011182 145.4426 /L 31.8272 2008-Feb-16 00:00 12 08 01.43 +25 20 04.5 16.75 .094751169973887 9.5517408 146.2606 /L 30.9160 2008-Feb-17 00:00 12 07 36.77 +25 11 25.4 16.86 .100282887595614 9.6061037 147.0751 /L 30.0158 2008-Feb-18 00:00 12 07 09.99 +25 03 18.3 16.96 .105847127138008 9.6643750 147.8842 /L 29.1285 2008-Feb-19 00:00 12 06 41.30 +24 55 37.1 17.06 .111446200484055 9.7267474 148.6861 /L 28.2555 2008-Feb-20 00:00 12 06 10.90 +24 48 16.5 17.16 .117082536643398 9.7934323 149.4789 /L 27.3983 2008-Feb-21 00:00 12 05 38.97 +24 41 12.4 17.25 .122758689208093 9.8646476 150.2609 /L 26.5585 2008-Feb-22 00:00 12 05 05.65 +24 34 21.1 17.33 .128477336235068 9.9406040 151.0300 /L 25.7376 2008-Feb-23 00:00 12 04 31.09 +24 27 39.4 17.42 .134241271940350 10.0214910 151.7844 /L 24.9371 2008-Feb-24 00:00 12 03 55.42 +24 21 04.7 17.50 .140053391449164 10.1074673 152.5219 /L 24.1585 2008-Feb-25 00:00 12 03 18.80 +24 14 34.4 17.58 .145916671134586 10.1986551 153.2405 /L 23.4036 2008-Feb-26 00:00 12 02 41.35 +24 08 06.4 17.65 .151834147459464 10.2951406 153.9377 /L 22.6740 $$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. 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) APmag = Asteroid's approximate apparent visual magnitude by following definition: 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 extrapolation error could be large and unknown. Units: NONE delta deldot = Range ("delta") and range-rate ("delta-dot") of target center with respect to the observer at the instant light seen by the observer at print-time would have left the target center (print-time minus down-leg light-time); the distance traveled by a light ray emanating from the center of the target and recorded by the observer at print-time. "deldot" is a projection of the velocity vector along this ray, the light-time-corrected line-of-sight from the coordinate center, and indicates relative motion. A positive "deldot" means the target center is moving away from the observer (coordinate center). A negative "deldot" means the target center is moving toward the observer. Units: AU and KM/S S-O-T /r = Sun-Observer-Target angle; target's apparent solar elongation seen from observer location at print-time. If negative, the target center is behind the Sun. Angular units: DEGREES. The '/r' column is a Sun-relative code, output for observing sites with defined rotation models only. /T indicates target trails Sun (evening sky) /L indicates target leads Sun (morning sky) NOTE: The S-O-T solar elongation angle is the total separation in any direction. It does not indicate the angle of Sun leading or trailing. 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 *******************************************************************************************************