Ephemeris Generator
Ephemeris Settings
Target Body: *Comet C/Wilson (1986 P1 = 1986 P1) [1989.25]*
Observer Location: *Geocentric [Code=500]*
Coordinates: *0 00'00.0''E, 0 00'00.0''N, -6378140. m*
From: *A.D. 1986-09-05 00:00 UT*
To: *A.D. 1986-11-17 00:00 *
Step: *1 day*
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
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Ephemeris / WWW_USER Thu Feb 24 05:28:37 2005 Pasadena, USA / Horizons
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Target body name: Wilson (C/1986 P1) {source: JPL#2}
Center body name: Earth (399) {source: DE-0406LE-0406}
Center-site name: GEOCENTRIC
*******************************************************************************
Start time : A.D. 1986-Sep-05 00:00:00.0000 UT
Stop time : A.D. 1986-Nov-17 00:00:00.0000 UT
Step-size : 1440 minutes
*******************************************************************************
Center geodetic : 0.000000, 0.0000, 0.0000{E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.000000, 0.0000, 0.0000{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 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
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.050222.p050511
EOP coverage : DATA-BASED 1962-JAN-20 TO 2005-FEB-22. PREDICTS-> 2005-MAY-10
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= 2447640.5 != 1989-Apr-24.0000000 (CT) Residual RMS= 1.0858
EC= .9998226226514768 QR= 1.19982401042057 TP= 2446905.988462897
OM= 111.6725913595571 W= 238.2812384378815 IN= 147.1188352922184
Comet physical & dynamic parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= n.a. A1= 1.801292E-8
A2= -1.038386D-11 A3= n.a. DT= n.a.
M1= n.a. M2= n.a. k1= n.a.
k2= n.a. 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 /r S-T-O
****************************************************************************************************************************************************
1986-Sep-05 00:00 21 22 21.27 +19 38 15.6 -75.75 -44.06 n.a. n.a. 3.3160069604 -18.48681 2.4387265038 -12.95682 145.0675 /T 10.0266
1986-Sep-06 00:00 21 20 12.76 +19 20 27.1 -75.66 -44.98 n.a. n.a. 3.3053261481 -18.49966 2.4314787678 -12.14824 144.6226 /T 10.1695
1986-Sep-07 00:00 21 18 04.68 +19 02 17.0 -75.52 -45.87 n.a. n.a. 3.2946379519 -18.51249 2.4246979748 -11.34007 144.1209 /T 10.3271
1986-Sep-08 00:00 21 15 57.12 +18 43 45.9 -75.32 -46.72 n.a. n.a. 3.2839423877 -18.52529 2.4183836197 -10.53322 143.5646 /T 10.4986
1986-Sep-09 00:00 21 13 50.18 +18 24 54.7 -75.07 -47.55 n.a. n.a. 3.2732394723 -18.53805 2.4125346747 -9.72860 142.9559 /T 10.6833
1986-Sep-10 00:00 21 11 43.94 +18 05 44.1 -74.77 -48.34 n.a. n.a. 3.2625292233 -18.55079 2.4071496051 -8.92705 142.2974 /T 10.8804
1986-Sep-11 00:00 21 09 38.49 +17 46 14.9 -74.41 -49.10 n.a. n.a. 3.2518116588 -18.56349 2.4022263925 -8.12939 141.5917 /T 11.0891
1986-Sep-12 00:00 21 07 33.90 +17 26 28.0 -74.01 -49.82 n.a. n.a. 3.2410867981 -18.57616 2.3977625647 -7.33639 140.8412 /T 11.3085
1986-Sep-13 00:00 21 05 30.26 +17 06 24.3 -73.56 -50.50 n.a. n.a. 3.2303546613 -18.58879 2.3937552258 -6.54874 140.0488 /T 11.5378
1986-Sep-14 00:00 21 03 27.64 +16 46 04.6 -73.05 -51.14 n.a. n.a. 3.2196152691 -18.60139 2.3902010882 -5.76710 139.2168 /T 11.7759
1986-Sep-15 00:00 21 01 26.11 +16 25 29.9 -72.51 -51.75 n.a. n.a. 3.2088686434 -18.61395 2.3870965011 -4.99208 138.3480 /T 12.0220
1986-Sep-16 00:00 20 59 25.74 +16 04 41.0 -71.92 -52.31 n.a. n.a. 3.1981148068 -18.62647 2.3844374728 -4.22425 137.4448 /T 12.2753
1986-Sep-17 00:00 20 57 26.60 +15 43 39.1 -71.28 -52.84 n.a. n.a. 3.1873537831 -18.63894 2.3822196864 -3.46417 136.5096 /T 12.5348
1986-Sep-18 00:00 20 55 28.75 +15 22 24.9 -70.60 -53.33 n.a. n.a. 3.1765855968 -18.65137 2.3804385054 -2.71239 135.5447 /T 12.7998
1986-Sep-19 00:00 20 53 32.27 +15 00 59.6 -69.88 -53.78 n.a. n.a. 3.1658102738 -18.66376 2.3790889705 -1.96948 134.5524 /T 13.0692
1986-Sep-20 00:00 20 51 37.21 +14 39 24.0 -69.12 -54.18 n.a. n.a. 3.1550278404 -18.67609 2.3781657909 -1.23602 133.5348 /T 13.3424
1986-Sep-21 00:00 20 49 43.63 +14 17 39.2 -68.32 -54.55 n.a. n.a. 3.1442383246 -18.68838 2.3776633325 -0.51261 132.4939 /T 13.6186
1986-Sep-22 00:00 20 47 51.59 +13 55 46.0 -67.48 -54.88 n.a. n.a. 3.1334417553 -18.70062 2.3775756079 0.20013 131.4317 /T 13.8969
1986-Sep-23 00:00 20 46 01.14 +13 33 45.6 -66.60 -55.16 n.a. n.a. 3.1226381620 -18.71280 2.3778962693 0.90156 130.3499 /T 14.1768
1986-Sep-24 00:00 20 44 12.33 +13 11 38.7 -65.69 -55.41 n.a. n.a. 3.1118275762 -18.72493 2.3786186086 1.59108 129.2504 /T 14.4573
1986-Sep-25 00:00 20 42 25.21 +12 49 26.5 -64.75 -55.61 n.a. n.a. 3.1010100298 -18.73700 2.3797355599 2.26805 128.1347 /T 14.7380
1986-Sep-26 00:00 20 40 39.82 +12 27 09.8 -63.77 -55.78 n.a. n.a. 3.0901855564 -18.74901 2.3812397082 2.93189 127.0044 /T 15.0181
1986-Sep-27 00:00 20 38 56.20 +12 04 49.6 -62.77 -55.90 n.a. n.a. 3.0793541905 -18.76096 2.3831232984 3.58203 125.8609 /T 15.2970
1986-Sep-28 00:00 20 37 14.39 +11 42 26.8 -61.74 -55.99 n.a. n.a. 3.0685159683 -18.77285 2.3853782469 4.21788 124.7056 /T 15.5742
1986-Sep-29 00:00 20 35 34.43 +11 20 02.3 -60.68 -56.04 n.a. n.a. 3.0576709266 -18.78467 2.3879961505 4.83892 123.5397 /T 15.8490
1986-Sep-30 00:00 20 33 56.34 +10 57 37.0 -59.59 -56.05 n.a. n.a. 3.0468191043 -18.79642 2.3909682955 5.44461 122.3645 /T 16.1211
1986-Oct-01 00:00 20 32 20.16 +10 35 11.9 -58.49 -56.03 n.a. n.a. 3.0359605410 -18.80810 2.3942856631 6.03443 121.1811 /T 16.3898
1986-Oct-02 00:00 20 30 45.91 +10 12 47.8 -57.36 -55.97 n.a. n.a. 3.0250952783 -18.81970 2.3979389364 6.60786 119.9905 /T 16.6547
1986-Oct-03 00:00 20 29 13.61 +09 50 25.5 -56.21 -55.88 n.a. n.a. 3.0142233586 -18.83123 2.4019185059 7.16440 118.7938 /T 16.9154
1986-Oct-04 00:00 20 27 43.29 +09 28 05.9 -55.05 -55.75 n.a. n.a. 3.0033448265 -18.84268 2.4062144819 7.70360 117.5918 /T 17.1715
1986-Oct-05 00:00 20 26 14.97 +09 05 49.7 -53.87 -55.59 n.a. n.a. 2.9924597273 -18.85405 2.4108167146 8.22501 116.3854 /T 17.4225
1986-Oct-06 00:00 20 24 48.66 +08 43 37.8 -52.68 -55.40 n.a. n.a. 2.9815681087 -18.86533 2.4157148263 8.72828 115.1754 /T 17.6682
1986-Oct-07 00:00 20 23 24.38 +08 21 30.8 -51.48 -55.18 n.a. n.a. 2.9706700194 -18.87653 2.4208982544 9.21313 113.9627 /T 17.9081
1986-Oct-08 00:00 20 22 02.12 +07 59 29.5 -50.28 -54.93 n.a. n.a. 2.9597655098 -18.88764 2.4263563032 9.67938 112.7478 /T 18.1419
1986-Oct-09 00:00 20 20 41.89 +07 37 34.4 -49.06 -54.66 n.a. n.a. 2.9488546325 -18.89865 2.4320781979 10.12693 111.5314 /T 18.3695
1986-Oct-10 00:00 20 19 23.70 +07 15 46.1 -47.84 -54.36 n.a. n.a. 2.9379374411 -18.90957 2.4380531330 10.55577 110.3141 /T 18.5905
1986-Oct-11 00:00 20 18 07.54 +06 54 05.3 -46.62 -54.04 n.a. n.a. 2.9270139913 -18.92039 2.4442703133 10.96595 109.0964 /T 18.8047
1986-Oct-12 00:00 20 16 53.40 +06 32 32.4 -45.40 -53.69 n.a. n.a. 2.9160843412 -18.93110 2.4507189839 11.35756 107.8789 /T 19.0119
1986-Oct-13 00:00 20 15 41.27 +06 11 08.0 -44.18 -53.33 n.a. n.a. 2.9051485497 -18.94172 2.4573884494 11.73070 106.6619 /T 19.2118
1986-Oct-14 00:00 20 14 31.16 +05 49 52.6 -42.96 -52.95 n.a. n.a. 2.8942066784 -18.95222 2.4642680853 12.08551 105.4460 /T 19.4044
1986-Oct-15 00:00 20 13 23.05 +05 28 46.5 -41.74 -52.55 n.a. n.a. 2.8832587909 -18.96261 2.4713473417 12.42212 104.2314 /T 19.5894
1986-Oct-16 00:00 20 12 16.94 +05 07 50.3 -40.52 -52.13 n.a. n.a. 2.8723049524 -18.97288 2.4786157407 12.74065 103.0185 /T 19.7667
1986-Oct-17 00:00 20 11 12.80 +04 47 04.2 -39.31 -51.70 n.a. n.a. 2.8613452303 -18.98303 2.4860628706 13.04120 101.8077 /T 19.9362
1986-Oct-18 00:00 20 10 10.64 +04 26 28.6 -38.11 -51.26 n.a. n.a. 2.8503796944 -18.99306 2.4936783764 13.32386 100.5991 /T 20.0976
1986-Oct-19 00:00 20 09 10.45 +04 06 03.8 -36.91 -50.80 n.a. n.a. 2.8394084166 -19.00297 2.5014519503 13.58871 99.3932 /T 20.2511
1986-Oct-20 00:00 20 08 12.20 +03 45 50.1 -35.71 -50.33 n.a. n.a. 2.8284314708 -19.01274 2.5093733234 13.83581 98.1901 /T 20.3963
1986-Oct-21 00:00 20 07 15.88 +03 25 47.8 -34.53 -49.86 n.a. n.a. 2.8174489334 -19.02237 2.5174322596 14.06521 96.9900 /T 20.5334
1986-Oct-22 00:00 20 06 21.48 +03 05 57.0 -33.35 -49.37 n.a. n.a. 2.8064608834 -19.03187 2.5256185539 14.27697 95.7932 /T 20.6621
1986-Oct-23 00:00 20 05 28.98 +02 46 18.0 -32.18 -48.88 n.a. n.a. 2.7954674018 -19.04122 2.5339220320 14.47113 94.5998 /T 20.7824
1986-Oct-24 00:00 20 04 38.36 +02 26 50.9 -31.02 -48.37 n.a. n.a. 2.7844685725 -19.05043 2.5423325538 14.64777 93.4100 /T 20.8942
1986-Oct-25 00:00 20 03 49.61 +02 07 36.0 -29.86 -47.86 n.a. n.a. 2.7734644815 -19.05948 2.5508400165 14.80695 92.2240 /T 20.9976
1986-Oct-26 00:00 20 03 02.70 +01 48 33.3 -28.72 -47.35 n.a. n.a. 2.7624552179 -19.06837 2.5594343583 14.94874 91.0418 /T 21.0924
1986-Oct-27 00:00 20 02 17.61 +01 29 43.1 -27.59 -46.83 n.a. n.a. 2.7514408732 -19.07710 2.5681055599 15.07323 89.8637 /T 21.1787
1986-Oct-28 00:00 20 01 34.33 +01 11 05.3 -26.47 -46.31 n.a. n.a. 2.7404215418 -19.08567 2.5768436439 15.18046 88.6897 /T 21.2565
1986-Oct-29 00:00 20 00 52.83 +00 52 40.2 -25.37 -45.78 n.a. n.a. 2.7293973210 -19.09406 2.5856386723 15.27052 87.5199 /T 21.3256
1986-Oct-30 00:00 20 00 13.10 +00 34 27.7 -24.27 -45.25 n.a. n.a. 2.7183683107 -19.10228 2.5944807417 15.34346 86.3544 /T 21.3862
1986-Oct-31 00:00 19 59 35.11 +00 16 28.0 -23.19 -44.72 n.a. n.a. 2.7073346143 -19.11032 2.6033599808 15.39934 85.1932 /T 21.4381
1986-Nov-01 00:00 19 58 58.84 -00 01 18.8 -22.12 -44.18 n.a. n.a. 2.6962963378 -19.11816 2.6122665522 15.43821 84.0366 /T 21.4815
1986-Nov-02 00:00 19 58 24.27 -00 18 52.9 -21.07 -43.65 n.a. n.a. 2.6852535907 -19.12582 2.6211906644 15.46018 82.8845 /T 21.5164
1986-Nov-03 00:00 19 57 51.38 -00 36 14.1 -20.03 -43.11 n.a. n.a. 2.6742064857 -19.13327 2.6301225972 15.46540 81.7369 /T 21.5427
1986-Nov-04 00:00 19 57 20.15 -00 53 22.5 -19.00 -42.58 n.a. n.a. 2.6631551384 -19.14052 2.6390527404 15.45411 80.5940 /T 21.5605
1986-Nov-05 00:00 19 56 50.54 -01 10 18.1 -18.00 -42.05 n.a. n.a. 2.6520996686 -19.14756 2.6479716405 15.42660 79.4557 /T 21.5698
1986-Nov-06 00:00 19 56 22.53 -01 27 00.9 -17.00 -41.52 n.a. n.a. 2.6410401988 -19.15439 2.6568700450 15.38327 78.3221 /T 21.5708
1986-Nov-07 00:00 19 55 56.09 -01 43 31.2 -16.03 -40.99 n.a. n.a. 2.6299768559 -19.16099 2.6657389354 15.32453 77.1932 /T 21.5634
1986-Nov-08 00:00 19 55 31.19 -01 59 48.8 -15.07 -40.47 n.a. n.a. 2.6189097698 -19.16736 2.6745695421 15.25083 76.0689 /T 21.5476
1986-Nov-09 00:00 19 55 07.80 -02 15 54.0 -14.13 -39.95 n.a. n.a. 2.6078390748 -19.17349 2.6833533451 15.16258 74.9493 /T 21.5237
1986-Nov-10 00:00 19 54 45.90 -02 31 46.8 -13.21 -39.44 n.a. n.a. 2.5967649086 -19.17938 2.6920820615 15.06018 73.8344 /T 21.4916
1986-Nov-11 00:00 19 54 25.45 -02 47 27.3 -12.30 -38.93 n.a. n.a. 2.5856874134 -19.18502 2.7007476274 14.94400 72.7241 /T 21.4513
1986-Nov-12 00:00 19 54 06.44 -03 02 55.6 -11.41 -38.42 n.a. n.a. 2.5746067353 -19.19041 2.7093421783 14.81436 71.6183 /T 21.4030
1986-Nov-13 00:00 19 53 48.84 -03 18 11.9 -10.54 -37.92 n.a. n.a. 2.5635230245 -19.19552 2.7178580286 14.67156 70.5170 /T 21.3467
1986-Nov-14 00:00 19 53 32.62 -03 33 16.3 -9.68 -37.43 n.a. n.a. 2.5524364357 -19.20037 2.7262876543 14.51586 69.4203 /T 21.2825
1986-Nov-15 00:00 19 53 17.77 -03 48 08.8 -8.83 -36.95 n.a. n.a. 2.5413471282 -19.20494 2.7346236750 14.34749 68.3280 /T 21.2104
1986-Nov-16 00:00 19 53 04.26 -04 02 49.8 -8.00 -36.46 n.a. n.a. 2.5302552656 -19.20921 2.7428588390 14.16667 67.2400 /T 21.1306
1986-Nov-17 00:00 19 52 52.06 -04 17 19.3 -7.19 -35.99 n.a. n.a. 2.5191610162 -19.21320 2.7509860096 13.97358 66.1564 /T 21.0430
****************************************************************************************************************************************************
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._(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 /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
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