Ephemeris Generator Ephemeris Settings Target Body: Comet 98P/Takamizawa = (1984 VII) [1984.33] Observer Location: Geocentric [Code=500] From: A.D. 1984-08-19 10:29 UT To: A.D. 1984-09-24 23:52 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 21:10:58 1999 Pasadena, USA / JPL-Horizons ******************************************************************************* Target body name: Takamizawa {source: JPL#10-DASTCOM3} Center body name: Earth (399) {source: DE-0406LE-0406} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 1984-Aug-19 10:29:00.0000 UT Stop time : A.D. 1984-Sep-24 23:52:00.0000 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 : 2.7 km 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= 2445840.5 != 1984-May-20.0000000 (TDB) EC= .573924868 QR= 1.59461468 TP= 2445845.4604658 OM= 124.8967583 W= 147.5757444 IN= 9.4655719 Comet physical & dynamic parameters: GM= n.a. RAD= 2.7 A1= 8.653E-9 A2= 2.38D-10 M1= 9. M2= 15.5 k1= 20. k2= 10. PHCOF= n.a. ************************************************************************************************************************************************* 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 ************************************************************************************************************************************************* 1984-Aug-19 10:29 21 09 07.29 -22 26 33.8 -6.31 -22.58 13.77 17.67 1.8183955584 8.08036 0.8214551014 12.09408 165.2721 8.1296 1984-Aug-19 22:29 21 09 01.95 -22 31 02.5 -6.02 -22.19 13.79 17.68 1.8207337531 8.10971 0.8249721975 12.26469 164.7661 8.3928 1984-Aug-20 10:29 21 08 56.87 -22 35 26.4 -5.72 -21.79 13.81 17.70 1.8230803900 8.13885 0.8285385155 12.43499 164.2604 8.6545 1984-Aug-20 22:29 21 08 52.05 -22 39 45.5 -5.41 -21.39 13.83 17.71 1.8254354078 8.16778 0.8321539608 12.60495 163.7550 8.9148 1984-Aug-21 10:29 21 08 47.50 -22 43 59.8 -5.10 -20.99 13.85 17.73 1.8277987453 8.19650 0.8358184347 12.77456 163.2501 9.1736 1984-Aug-21 22:29 21 08 43.22 -22 48 09.2 -4.78 -20.59 13.87 17.75 1.8301703417 8.22500 0.8395318336 12.94380 162.7458 9.4307 1984-Aug-22 10:29 21 08 39.21 -22 52 13.9 -4.45 -20.19 13.89 17.76 1.8325501363 8.25330 0.8432940487 13.11266 162.2422 9.6861 1984-Aug-22 22:29 21 08 35.50 -22 56 13.7 -4.11 -19.78 13.91 17.78 1.8349380685 8.28139 0.8471049654 13.28111 161.7394 9.9398 1984-Aug-23 10:29 21 08 32.08 -23 00 08.6 -3.77 -19.37 13.93 17.79 1.8373340779 8.30926 0.8509644626 13.44912 161.2374 10.1917 1984-Aug-23 22:29 21 08 28.96 -23 03 58.7 -3.42 -18.97 13.95 17.81 1.8397381043 8.33693 0.8548724119 13.61668 160.7364 10.4417 1984-Aug-24 10:29 21 08 26.14 -23 07 43.9 -3.07 -18.56 13.98 17.82 1.8421500879 8.36440 0.8588286763 13.78375 160.2364 10.6898 1984-Aug-24 22:29 21 08 23.63 -23 11 24.2 -2.71 -18.15 14.00 17.84 1.8445699686 8.39165 0.8628331098 13.95030 159.7374 10.9360 1984-Aug-25 10:29 21 08 21.44 -23 14 59.6 -2.34 -17.74 14.02 17.85 1.8469976871 8.41870 0.8668855562 14.11629 159.2396 11.1802 1984-Aug-25 22:29 21 08 19.57 -23 18 30.1 -1.96 -17.33 14.04 17.87 1.8494331837 8.44555 0.8709858482 14.28168 158.7430 11.4224 1984-Aug-26 10:29 21 08 18.03 -23 21 55.7 -1.58 -16.93 14.06 17.89 1.8518763994 8.47219 0.8751338067 14.44642 158.2475 11.6626 1984-Aug-26 22:29 21 08 16.82 -23 25 16.4 -1.20 -16.52 14.08 17.90 1.8543272751 8.49862 0.8793292407 14.61049 157.7534 11.9006 1984-Aug-27 10:29 21 08 15.94 -23 28 32.2 -0.80 -16.11 14.11 17.92 1.8567857520 8.52485 0.8835719470 14.77383 157.2605 12.1366 1984-Aug-27 22:29 21 08 15.41 -23 31 43.1 -0.41 -15.70 14.13 17.94 1.8592517715 8.55088 0.8878617106 14.93641 156.7690 12.3704 1984-Aug-28 10:29 21 08 15.22 -23 34 49.1 -0.01 -15.29 14.15 17.95 1.8617252752 8.57671 0.8921983058 15.09818 156.2789 12.6020 1984-Aug-28 22:29 21 08 15.39 -23 37 50.2 0.40 -14.88 14.17 17.97 1.8642062049 8.60234 0.8965814969 15.25913 155.7902 12.8315 1984-Aug-29 10:29 21 08 15.91 -23 40 46.4 0.81 -14.48 14.20 17.98 1.8666945027 8.62776 0.9010110401 15.41922 155.3029 13.0587 1984-Aug-29 22:29 21 08 16.79 -23 43 37.7 1.22 -14.07 14.22 18.00 1.8691901107 8.65299 0.9054866844 15.57843 154.8172 13.2837 1984-Aug-30 10:29 21 08 18.04 -23 46 24.2 1.64 -13.67 14.24 18.02 1.8716929715 8.67802 0.9100081741 15.73674 154.3329 13.5065 1984-Aug-30 22:29 21 08 19.65 -23 49 05.9 2.06 -13.27 14.26 18.03 1.8742030276 8.70285 0.9145752499 15.89416 153.8501 13.7271 1984-Aug-31 10:29 21 08 21.63 -23 51 42.7 2.48 -12.87 14.29 18.05 1.8767202220 8.72748 0.9191876505 16.05067 153.3689 13.9454 1984-Aug-31 22:29 21 08 23.98 -23 54 14.7 2.90 -12.47 14.31 18.07 1.8792444978 8.75192 0.9238451140 16.20627 152.8893 14.1614 1984-Sep-01 10:29 21 08 26.70 -23 56 41.9 3.33 -12.07 14.33 18.08 1.8817757984 8.77616 0.9285473792 16.36097 152.4112 14.3751 1984-Sep-01 22:29 21 08 29.80 -23 59 04.3 3.75 -11.67 14.35 18.10 1.8843140672 8.80020 0.9332941861 16.51477 151.9346 14.5865 1984-Sep-02 10:29 21 08 33.28 -24 01 22.0 4.18 -11.28 14.38 18.12 1.8868592480 8.82405 0.9380852772 16.66769 151.4597 14.7957 1984-Sep-02 22:29 21 08 37.13 -24 03 35.0 4.61 -10.89 14.40 18.14 1.8894112849 8.84771 0.9429203973 16.81973 150.9864 15.0025 1984-Sep-03 10:29 21 08 41.36 -24 05 43.3 5.04 -10.50 14.42 18.15 1.8919701220 8.87117 0.9477992943 16.97090 150.5146 15.2071 1984-Sep-03 22:29 21 08 45.97 -24 07 47.0 5.47 -10.11 14.44 18.17 1.8945357039 8.89444 0.9527217196 17.12121 150.0445 15.4094 1984-Sep-04 10:29 21 08 50.96 -24 09 46.0 5.90 -9.73 14.47 18.19 1.8971079753 8.91752 0.9576874276 17.27068 149.5759 15.6093 1984-Sep-04 22:29 21 08 56.33 -24 11 40.5 6.34 -9.34 14.49 18.20 1.8996868809 8.94041 0.9626961766 17.41932 149.1090 15.8070 1984-Sep-05 10:29 21 09 02.08 -24 13 30.3 6.77 -8.96 14.51 18.22 1.9022723661 8.96312 0.9677477278 17.56714 148.6437 16.0023 1984-Sep-05 22:29 21 09 08.21 -24 15 15.7 7.20 -8.59 14.54 18.24 1.9048643762 8.98563 0.9728418464 17.71415 148.1800 16.1954 1984-Sep-06 10:29 21 09 14.71 -24 16 56.5 7.63 -8.21 14.56 18.26 1.9074628568 9.00795 0.9779783006 17.86036 147.7179 16.3862 1984-Sep-06 22:29 21 09 21.60 -24 18 32.9 8.06 -7.84 14.58 18.27 1.9100677537 9.03009 0.9831568621 18.00579 147.2574 16.5747 1984-Sep-07 10:29 21 09 28.86 -24 20 04.8 8.49 -7.47 14.61 18.29 1.9126790132 9.05204 0.9883773058 18.15044 146.7985 16.7609 1984-Sep-07 22:29 21 09 36.51 -24 21 32.3 8.92 -7.10 14.63 18.31 1.9152965814 9.07381 0.9936394099 18.29433 146.3412 16.9448 1984-Sep-08 10:29 21 09 44.53 -24 22 55.4 9.35 -6.74 14.65 18.33 1.9179204051 9.09539 0.9989429556 18.43747 145.8854 17.1265 1984-Sep-08 22:29 21 09 52.92 -24 24 14.2 9.78 -6.38 14.68 18.34 1.9205504310 9.11678 1.0042877271 18.57987 145.4313 17.3058 1984-Sep-09 10:29 21 10 01.70 -24 25 28.7 10.21 -6.02 14.70 18.36 1.9231866061 9.13800 1.0096735114 18.72153 144.9787 17.4830 1984-Sep-09 22:29 21 10 10.85 -24 26 38.8 10.63 -5.67 14.72 18.38 1.9258288778 9.15903 1.0151000982 18.86248 144.5278 17.6578 1984-Sep-10 10:29 21 10 20.37 -24 27 44.8 11.06 -5.31 14.75 18.40 1.9284771937 9.17988 1.0205672800 19.00270 144.0783 17.8304 1984-Sep-10 22:29 21 10 30.27 -24 28 46.5 11.48 -4.97 14.77 18.41 1.9311315014 9.20055 1.0260748515 19.14222 143.6305 18.0008 1984-Sep-11 10:29 21 10 40.55 -24 29 44.1 11.90 -4.62 14.80 18.43 1.9337917491 9.22104 1.0316226097 19.28104 143.1842 18.1690 1984-Sep-11 22:29 21 10 51.19 -24 30 37.5 12.33 -4.27 14.82 18.45 1.9364578850 9.24135 1.0372103537 19.41917 142.7394 18.3349 1984-Sep-12 10:29 21 11 02.21 -24 31 26.8 12.75 -3.93 14.84 18.47 1.9391298576 9.26149 1.0428378847 19.55661 142.2962 18.4986 1984-Sep-12 22:29 21 11 13.59 -24 32 12.0 13.17 -3.60 14.87 18.48 1.9418076157 9.28144 1.0485050052 19.69337 141.8544 18.6601 1984-Sep-13 10:29 21 11 25.35 -24 32 53.2 13.58 -3.26 14.89 18.50 1.9444911084 9.30123 1.0542115196 19.82946 141.4142 18.8194 1984-Sep-13 22:29 21 11 37.47 -24 33 30.4 14.00 -2.93 14.91 18.52 1.9471802848 9.32083 1.0599572335 19.96487 140.9756 18.9765 1984-Sep-14 10:29 21 11 49.96 -24 34 03.6 14.41 -2.60 14.94 18.54 1.9498750946 9.34026 1.0657419537 20.09962 140.5384 19.1314 1984-Sep-14 22:29 21 12 02.82 -24 34 32.9 14.83 -2.27 14.96 18.56 1.9525754874 9.35952 1.0715654879 20.23370 140.1027 19.2841 1984-Sep-15 10:29 21 12 16.03 -24 34 58.2 15.24 -1.95 14.99 18.57 1.9552814133 9.37861 1.0774276448 20.36712 139.6684 19.4347 1984-Sep-15 22:29 21 12 29.62 -24 35 19.7 15.65 -1.63 15.01 18.59 1.9579928225 9.39752 1.0833282336 20.49989 139.2357 19.5832 1984-Sep-16 10:29 21 12 43.56 -24 35 37.4 16.06 -1.31 15.03 18.61 1.9607096655 9.41626 1.0892670638 20.63199 138.8044 19.7294 1984-Sep-16 22:29 21 12 57.86 -24 35 51.3 16.46 -1.00 15.06 18.63 1.9634318931 9.43483 1.0952439454 20.76343 138.3745 19.8736 1984-Sep-17 10:29 21 13 12.52 -24 36 01.4 16.87 -0.69 15.08 18.65 1.9661594563 9.45324 1.1012586882 20.89422 137.9461 20.0156 1984-Sep-17 22:29 21 13 27.54 -24 36 07.8 17.27 -0.38 15.11 18.66 1.9688923063 9.47147 1.1073111015 21.02434 137.5192 20.1555 1984-Sep-18 10:29 21 13 42.91 -24 36 10.4 17.67 -0.07 15.13 18.68 1.9716303947 9.48954 1.1134009943 21.15380 137.0936 20.2933 1984-Sep-18 22:29 21 13 58.64 -24 36 09.5 18.07 0.23 15.15 18.70 1.9743736731 9.50744 1.1195281740 21.28260 136.6695 20.4290 1984-Sep-19 10:29 21 14 14.71 -24 36 04.9 18.47 0.54 15.18 18.72 1.9771220937 9.52517 1.1256924468 21.41071 136.2468 20.5627 1984-Sep-19 22:29 21 14 31.14 -24 35 56.7 18.87 0.83 15.20 18.74 1.9798756086 9.54274 1.1318936165 21.53815 135.8254 20.6942 1984-Sep-20 10:29 21 14 47.91 -24 35 45.0 19.26 1.13 15.23 18.75 1.9826341704 9.56015 1.1381314839 21.66488 135.4055 20.8237 1984-Sep-20 22:29 21 15 05.03 -24 35 29.7 19.65 1.42 15.25 18.77 1.9853977318 9.57739 1.1444058463 21.79091 134.9869 20.9511 1984-Sep-21 10:29 21 15 22.49 -24 35 10.9 20.04 1.71 15.27 18.79 1.9881662458 9.59447 1.1507164961 21.91621 134.5698 21.0765 1984-Sep-21 22:29 21 15 40.29 -24 34 48.7 20.43 2.00 15.30 18.81 1.9909396657 9.61139 1.1570632205 22.04076 134.1539 21.1998 1984-Sep-22 10:29 21 15 58.43 -24 34 23.1 20.82 2.28 15.32 18.83 1.9937179450 9.62815 1.1634458001 22.16454 133.7395 21.3211 1984-Sep-22 22:29 21 16 16.92 -24 33 54.1 21.21 2.57 15.35 18.84 1.9965010374 9.64474 1.1698640082 22.28752 133.3264 21.4404 1984-Sep-23 10:29 21 16 35.73 -24 33 21.7 21.59 2.85 15.37 18.86 1.9992888969 9.66118 1.1763176103 22.40968 132.9146 21.5577 1984-Sep-23 22:29 21 16 54.89 -24 32 45.9 21.98 3.12 15.39 18.88 2.0020814778 9.67746 1.1828063636 22.53098 132.5042 21.6730 1984-Sep-24 10:29 21 17 14.37 -24 32 06.9 22.36 3.40 15.42 18.90 2.0048787347 9.69359 1.1893300166 22.65139 132.0951 21.7863 1984-Sep-24 22:29 21 17 34.19 -24 31 24.6 22.73 3.67 15.44 18.92 2.0076806221 9.70956 1.1958883098 22.77089 131.6873 21.8976 ************************************************************************************************************************************************* 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