Ephemeris Generator Ephemeris Settings Target Body: Comet 6P/d'Arrest = (1982 VII) [1982.67] Observer Location: Geocentric [Code=500] From: A.D. 1982-09-15 10:06 UT To: A.D. 1982-10-13 09:51 Step: 12 hour Format: Calendar Date and Time Output Quantities: 2-3,9,19-20,23-24 Ref. Frame, RA/Dec Format: J2000, HMS Apparent Coordinates Model: Airless ------------------------------------------------------------------------------------------------------------------------------------------------- HORIZONS Generated Ephemeris ******************************************************************************* Ephemeris / WWW_USER Sun Jul 25 20:59:54 1999 Pasadena, USA / JPL-Horizons ******************************************************************************* Target body name: d'Arrest {source: JPL#31-DASTCOM3} Center body name: Earth (399) {source: DE-0406LE-0406} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 1982-Sep-15 10:06:00.0000 UT Stop time : A.D. 1982-Oct-13 09:51:00.0000 UT Step-size : 720 minutes ******************************************************************************* Center geodetic : 0.000000, 0.000000, 0.00000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.00000, 0.000, 0.000 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : Standard Earth Model {East-longitude +} Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole} Target pole/equ : No model available Target radii : (unavailable) Target primary : Sun {source: DE-0406LE-0406} Interfering body: MOON (Req= 1737.400) km {source: DE-0406LE-0406} Deflecting body : Sun, EARTH {source: DE-0406LE-0406} Deflecting GMs : 1.3271E+11, 3.9860E+05 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Units conversion: 1 AU= 149597870.691 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs : Elevation (-90deg=NO ), Airmass (>38.0000=NO), Daylight (NO ) ******************************************************************************* Initial heliocentric osc. elements wrt ecliptic and mean equinox of J2000.0: EPOCH= 2445240.5 != 1982-Sep-28.0000000 (TDB) EC= .624827735 QR= 1.291021212 TP= 2445226.7644551 OM= 139.5499436 W= 176.9817377 IN= 19.4243967 Comet physical & dynamic parameters: GM= n.a. RAD= n.a. A1= 4.89E-9 A2= 2.48D-10 M1= 7.5 M2= 16. k1= 40. k2= 5. PHCOF= .030 ************************************************************************************************************************************************* Date__(UT)__HR:MN R.A.__(a-apparent)__DEC dRA*cosD d(DEC)/dt T-mag N-mag r rdot delta deldot S-O-T S-T-O ************************************************************************************************************************************************* 1982-Sep-15 10:06 17 44 30.47 -22 12 43.3 121.51 -78.49 11.28 17.43 1.2910948161 0.21768 0.7399351739 5.09318 94.1751 50.9633 1982-Sep-15 22:06 17 46 15.85 -22 28 21.4 122.15 -77.85 11.29 17.43 1.2911726110 0.31367 0.7414210739 5.19729 94.1005 50.9563 1982-Sep-16 10:06 17 48 01.97 -22 43 51.7 122.78 -77.19 11.30 17.44 1.2912781224 0.40964 0.7429370916 5.30176 94.0271 50.9476 1982-Sep-16 22:06 17 49 48.84 -22 59 14.1 123.41 -76.52 11.30 17.44 1.2914113398 0.50556 0.7444833245 5.40655 93.9546 50.9370 1982-Sep-17 10:06 17 51 36.45 -23 14 28.3 124.02 -75.83 11.31 17.45 1.2915722501 0.60144 0.7460598661 5.51166 93.8832 50.9247 1982-Sep-17 22:06 17 53 24.78 -23 29 34.1 124.62 -75.13 11.32 17.45 1.2917608374 0.69726 0.7476668060 5.61707 93.8127 50.9107 1982-Sep-18 10:06 17 55 13.85 -23 44 31.5 125.21 -74.41 11.32 17.46 1.2919770831 0.79300 0.7493042315 5.72279 93.7433 50.8949 1982-Sep-18 22:06 17 57 03.63 -23 59 20.1 125.79 -73.69 11.33 17.46 1.2922209658 0.88867 0.7509722275 5.82879 93.6748 50.8773 1982-Sep-19 10:06 17 58 54.12 -24 14 00.0 126.35 -72.94 11.34 17.47 1.2924924616 0.98425 0.7526708777 5.93508 93.6073 50.8581 1982-Sep-19 22:06 18 00 45.32 -24 28 30.9 126.91 -72.19 11.35 17.47 1.2927915438 1.07973 0.7544002645 6.04166 93.5407 50.8372 1982-Sep-20 10:06 18 02 37.21 -24 42 52.6 127.45 -71.42 11.36 17.48 1.2931181828 1.17511 0.7561604704 6.14852 93.4750 50.8145 1982-Sep-20 22:06 18 04 29.79 -24 57 05.1 127.98 -70.64 11.37 17.48 1.2934723468 1.27037 0.7579515766 6.25567 93.4102 50.7902 1982-Sep-21 10:06 18 06 23.06 -25 11 08.0 128.50 -69.85 11.38 17.49 1.2938540008 1.36551 0.7597736641 6.36309 93.3463 50.7643 1982-Sep-21 22:06 18 08 16.99 -25 25 01.4 129.01 -69.04 11.39 17.49 1.2942631077 1.46052 0.7616268141 6.47079 93.2832 50.7366 1982-Sep-22 10:06 18 10 11.59 -25 38 45.0 129.51 -68.22 11.40 17.50 1.2946996273 1.55538 0.7635111066 6.57877 93.2210 50.7074 1982-Sep-22 22:06 18 12 06.84 -25 52 18.8 129.99 -67.39 11.41 17.50 1.2951635170 1.65009 0.7654266213 6.68702 93.1595 50.6766 1982-Sep-23 10:06 18 14 02.74 -26 05 42.4 130.46 -66.55 11.42 17.51 1.2956547318 1.74463 0.7673734370 6.79555 93.0989 50.6441 1982-Sep-23 22:06 18 15 59.27 -26 18 55.9 130.92 -65.69 11.44 17.51 1.2961732236 1.83901 0.7693516319 6.90434 93.0390 50.6101 1982-Sep-24 10:06 18 17 56.42 -26 31 59.1 131.36 -64.83 11.45 17.52 1.2967189423 1.93321 0.7713612828 7.01340 92.9799 50.5746 1982-Sep-24 22:06 18 19 54.18 -26 44 51.9 131.79 -63.95 11.46 17.52 1.2972918349 2.02722 0.7734024656 7.12272 92.9215 50.5374 1982-Sep-25 10:06 18 21 52.55 -26 57 34.0 132.21 -63.06 11.48 17.53 1.2978918460 2.12104 0.7754752544 7.23229 92.8638 50.4988 1982-Sep-25 22:06 18 23 51.51 -27 10 05.5 132.61 -62.17 11.49 17.53 1.2985189177 2.21465 0.7775797229 7.34212 92.8068 50.4587 1982-Sep-26 10:06 18 25 51.04 -27 22 26.1 133.00 -61.26 11.51 17.54 1.2991729896 2.30805 0.7797159427 7.45219 92.7505 50.4170 1982-Sep-26 22:06 18 27 51.15 -27 34 35.8 133.38 -60.34 11.52 17.55 1.2998539989 2.40123 0.7818839841 7.56250 92.6948 50.3739 1982-Sep-27 10:06 18 29 51.81 -27 46 34.4 133.75 -59.41 11.54 17.55 1.3005618803 2.49418 0.7840839164 7.67305 92.6397 50.3294 1982-Sep-27 22:06 18 31 53.01 -27 58 21.9 134.10 -58.48 11.55 17.56 1.3012965662 2.58689 0.7863158077 7.78384 92.5851 50.2834 1982-Sep-28 10:06 18 33 54.74 -28 09 58.0 134.44 -57.53 11.57 17.56 1.3020579864 2.67935 0.7885797248 7.89485 92.5312 50.2360 1982-Sep-28 22:06 18 35 57.00 -28 21 22.7 134.76 -56.58 11.59 17.57 1.3028460686 2.77156 0.7908757336 8.00609 92.4778 50.1872 1982-Sep-29 10:06 18 37 59.75 -28 32 36.0 135.07 -55.61 11.60 17.58 1.3036607381 2.86350 0.7932038993 8.11756 92.4249 50.1371 1982-Sep-29 22:06 18 40 03.00 -28 43 37.6 135.37 -54.64 11.62 17.58 1.3045019178 2.95518 0.7955642865 8.22924 92.3725 50.0855 1982-Sep-30 10:06 18 42 06.73 -28 54 27.6 135.65 -53.67 11.64 17.59 1.3053695284 3.04657 0.7979569591 8.34115 92.3206 50.0327 1982-Sep-30 22:06 18 44 10.93 -29 05 05.7 135.92 -52.68 11.66 17.60 1.3062634884 3.13768 0.8003819805 8.45328 92.2691 49.9785 1982-Oct-01 10:06 18 46 15.57 -29 15 32.0 136.18 -51.69 11.68 17.60 1.3071837141 3.22850 0.8028394136 8.56563 92.2181 49.9231 1982-Oct-01 22:06 18 48 20.66 -29 25 46.4 136.42 -50.69 11.70 17.61 1.3081301195 3.31902 0.8053293213 8.67819 92.1674 49.8663 1982-Oct-02 10:06 18 50 26.17 -29 35 48.7 136.65 -49.68 11.72 17.62 1.3091026166 3.40922 0.8078517654 8.79096 92.1171 49.8083 1982-Oct-02 22:06 18 52 32.09 -29 45 38.9 136.86 -48.67 11.74 17.62 1.3101011152 3.49912 0.8104068073 8.90395 92.0672 49.7491 1982-Oct-03 10:06 18 54 38.40 -29 55 16.9 137.06 -47.65 11.76 17.63 1.3111255230 3.58869 0.8129945069 9.01714 92.0177 49.6887 1982-Oct-03 22:06 18 56 45.10 -30 04 42.6 137.25 -46.63 11.78 17.64 1.3121757457 3.67792 0.8156149231 9.13053 91.9684 49.6270 1982-Oct-04 10:06 18 58 52.17 -30 13 56.1 137.43 -45.60 11.80 17.64 1.3132516870 3.76683 0.8182681125 9.24411 91.9194 49.5642 1982-Oct-04 22:06 19 00 59.59 -30 22 57.2 137.59 -44.57 11.82 17.65 1.3143532486 3.85538 0.8209541291 9.35788 91.8707 49.5002 1982-Oct-05 10:06 19 03 07.35 -30 31 45.8 137.74 -43.53 11.84 17.66 1.3154803301 3.94359 0.8236730236 9.47181 91.8222 49.4350 1982-Oct-05 22:06 19 05 15.43 -30 40 22.0 137.88 -42.49 11.86 17.66 1.3166328295 4.03144 0.8264248430 9.58590 91.7740 49.3688 1982-Oct-06 10:06 19 07 23.83 -30 48 45.7 138.00 -41.45 11.89 17.67 1.3178106427 4.11893 0.8292096297 9.70013 91.7260 49.3014 1982-Oct-06 22:06 19 09 32.52 -30 56 56.8 138.11 -40.40 11.91 17.68 1.3190136638 4.20605 0.8320274204 9.81447 91.6781 49.2329 1982-Oct-07 10:06 19 11 41.48 -31 04 55.4 138.21 -39.35 11.93 17.69 1.3202417850 4.29279 0.8348782461 9.92891 91.6304 49.1634 1982-Oct-07 22:06 19 13 50.72 -31 12 41.3 138.30 -38.30 11.96 17.69 1.3214948970 4.37915 0.8377621316 10.04343 91.5829 49.0927 1982-Oct-08 10:06 19 16 00.20 -31 20 14.6 138.37 -37.24 11.98 17.70 1.3227728885 4.46513 0.8406790943 10.15799 91.5355 49.0211 1982-Oct-08 22:06 19 18 09.92 -31 27 35.2 138.43 -36.19 12.01 17.71 1.3240756466 4.55070 0.8436291444 10.27258 91.4881 48.9484 1982-Oct-09 10:06 19 20 19.86 -31 34 43.2 138.48 -35.13 12.03 17.72 1.3254030568 4.63588 0.8466122846 10.38716 91.4409 48.8747 1982-Oct-09 22:06 19 22 30.01 -31 41 38.4 138.52 -34.07 12.06 17.72 1.3267550030 4.72066 0.8496285097 10.50171 91.3938 48.8000 1982-Oct-10 10:06 19 24 40.34 -31 48 20.9 138.54 -33.01 12.08 17.73 1.3281313672 4.80502 0.8526778069 10.61620 91.3467 48.7244 1982-Oct-10 22:06 19 26 50.84 -31 54 50.7 138.56 -31.95 12.11 17.74 1.3295320304 4.88897 0.8557601553 10.73060 91.2997 48.6478 1982-Oct-11 10:06 19 29 01.50 -32 01 07.8 138.56 -30.89 12.14 17.75 1.3309568715 4.97250 0.8588755264 10.84490 91.2527 48.5702 1982-Oct-11 22:06 19 31 12.31 -32 07 12.2 138.55 -29.83 12.16 17.76 1.3324057685 5.05560 0.8620238842 10.95905 91.2057 48.4917 1982-Oct-12 10:06 19 33 23.24 -32 13 03.9 138.53 -28.77 12.19 17.76 1.3338785975 5.13827 0.8652051860 11.07305 91.1586 48.4123 1982-Oct-12 22:06 19 35 34.28 -32 18 42.9 138.49 -27.71 12.22 17.77 1.3353752335 5.22051 0.8684193817 11.18686 91.1116 48.3320 ************************************************************************************************************************************************* Column meaning: TIME Prior to 1972, 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 TDB uniform time scale is used internally. Conversion between TDB 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._(a-apparent)__DEC. = Airless apparent right ascension and declination of the target with respect to the Earth true-equator and the meridian containing the Earth true equinox of date. Corrected for light-time, gravitational deflection of light, stellar aberration, precession & nutation. Units:HMS (HH MM SS.ff) and DMS (DD MM SS.f) dRA*cosD d(DEC)/dt = The rate of change of target apparent RA and DEC (airless). d(RA)/dt is multiplied by the cosine of the declination. Units: ARCSECONDS PER HOUR T-mag N-mag = Comet's approximate apparent visual total magnitude ("T-mag") and nuclear magnitude ("N-mag") by following definitions: T-mag = M1 + 5*log10(delta) + k1*log10(r) N-mag = M2 + 5*log10(delta) + k2*log10(r) + phcof*beta Units: none r rdot = Target apparent heliocentric range ("r") and range-rate ("rdot") as seen by observer. Units: AU and KM/S delta deldot = Target apparent range ("delta") and range-rate ("delta-dot") relative to observer. Units: AU and KM/S S-O-T = 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. Units: DEGREES 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 e-mail : horizons@ssd.jpl.nasa.gov ************************************************************************************************************************************************* ------------------------------------------------------------------------------------------------------------------------------------------------- Credits/Awards Contact: Webmaster (webmaster@ssd.jpl.nasa.gov) Last modified: 1999 June 30 13:42