Ephemeris Generator
Ephemeris Settings
Target Body: *Comet C/Okazaki-Levy-Rudenko (1989 Q1 = 1989 Q1) [1990.00]*
Observer Location: *Geocentric [Code=500]*
Coordinates: *0 00'00.0''E, 0 00'00.0''N, -6378140. m*
From: *A.D. 1989-12-02 00:00 UT*
To: *A.D. 1989-12-30 00:00 *
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*
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HORIZONS Generated Ephemeris
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Ephemeris / WWW_USER Thu Feb 24 05:41:26 2005 Pasadena, USA / Horizons
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Target body name: Okazaki-Levy-Rudenko (C/1989 Q1) {source: JPL#6}
Center body name: Earth (399) {source: DE-0406LE-0406}
Center-site name: GEOCENTRIC
*******************************************************************************
Start time : A.D. 1989-Dec-02 00:00:00.0000 UT
Stop time : A.D. 1989-Dec-30 00:00:00.0000 UT
Step-size : 720 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 )
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Initial FK5/J2000.0 heliocentric ecliptic osculating elements (AU, DAYS, DEG):
EPOCH= 2447920.5 != 1990-Jan-29.0000000 (CT) Residual RMS= 1.0008
EC= 1.000199314804725 QR= .6423294596411929 TP= 2447842.414693829
OM= 275.5110040335643 W= 150.5583601847187 IN= 90.1467134183446
Comet physical & dynamic parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= n.a. A1= 3.201098E-8
A2= 6.097302E-9 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
****************************************************************************************************************************************************
1989-Dec-02 00:00 12 46 58.63 -36 03 45.3 -75.35 -530.52 n.a. n.a. 0.7696417059 19.52104 0.5159129388 2.57721 50.5866 /L 98.2221
1989-Dec-02 12:00 12 45 43.56 -37 49 38.4 -74.69 -528.24 n.a. n.a. 0.7753220130 19.80591 0.5168926815 4.19995 51.2454 /L 97.4286
1989-Dec-03 00:00 12 44 27.33 -39 34 58.3 -74.07 -524.99 n.a. n.a. 0.7810831704 20.08144 0.5183384512 5.80411 51.9151 /L 96.5961
1989-Dec-03 12:00 12 43 09.78 -41 19 33.6 -73.49 -520.81 n.a. n.a. 0.7869225067 20.34781 0.5202442154 7.38514 52.5932 /L 95.7286
1989-Dec-04 00:00 12 41 50.75 -43 03 13.2 -72.95 -515.74 n.a. n.a. 0.7928374067 20.60522 0.5226026716 8.93881 53.2772 /L 94.8302
1989-Dec-04 12:00 12 40 30.03 -44 45 47.0 -72.46 -509.85 n.a. n.a. 0.7988253132 20.85388 0.5254053429 10.46123 53.9643 /L 93.9048
1989-Dec-05 00:00 12 39 07.43 -46 27 05.5 -72.04 -503.20 n.a. n.a. 0.8048837266 21.09398 0.5286426840 11.94889 54.6522 /L 92.9564
1989-Dec-05 12:00 12 37 42.71 -48 06 59.9 -71.67 -495.85 n.a. n.a. 0.8110102066 21.32573 0.5323041964 13.39869 55.3384 /L 91.9888
1989-Dec-06 00:00 12 36 15.63 -49 45 22.2 -71.38 -487.87 n.a. n.a. 0.8172023722 21.54934 0.5363785486 14.80796 56.0206 /L 91.0057
1989-Dec-06 12:00 12 34 45.90 -51 22 05.3 -71.16 -479.34 n.a. n.a. 0.8234579015 21.76501 0.5408536984 16.17445 56.6967 /L 90.0106
1989-Dec-07 00:00 12 33 13.21 -52 57 03.1 -71.02 -470.32 n.a. n.a. 0.8297745326 21.97294 0.5457170169 17.49634 57.3648 /L 89.0068
1989-Dec-07 12:00 12 31 37.23 -54 30 10.2 -70.97 -460.90 n.a. n.a. 0.8361500623 22.17335 0.5509554070 18.77221 58.0229 /L 87.9973
1989-Dec-08 00:00 12 29 57.58 -56 01 22.0 -71.02 -451.12 n.a. n.a. 0.8425823468 22.36643 0.5565554209 20.00103 58.6696 /L 86.9850
1989-Dec-08 12:00 12 28 13.83 -57 30 34.8 -71.16 -441.07 n.a. n.a. 0.8490693005 22.55238 0.5625033693 21.18216 59.3033 /L 85.9725
1989-Dec-09 00:00 12 26 25.52 -58 57 45.7 -71.42 -430.80 n.a. n.a. 0.8556088959 22.73141 0.5687854230 22.31527 59.9228 /L 84.9622
1989-Dec-09 12:00 12 24 32.11 -60 22 52.2 -71.78 -420.36 n.a. n.a. 0.8621991634 22.90371 0.5753877083 23.40036 60.5271 /L 83.9561
1989-Dec-10 00:00 12 22 33.00 -61 45 52.8 -72.28 -409.82 n.a. n.a. 0.8688381890 23.06948 0.5822963894 24.43770 61.1152 /L 82.9562
1989-Dec-10 12:00 12 20 27.53 -63 06 46.4 -72.90 -399.21 n.a. n.a. 0.8755241149 23.22890 0.5894977459 25.42780 61.6864 /L 81.9642
1989-Dec-11 00:00 12 18 14.93 -64 25 32.6 -73.66 -388.57 n.a. n.a. 0.8822551380 23.38217 0.5969782374 26.37139 62.2402 /L 80.9814
1989-Dec-11 12:00 12 15 54.33 -65 42 11.1 -74.57 -377.94 n.a. n.a. 0.8890295097 23.52948 0.6047245626 27.26939 62.7760 /L 80.0093
1989-Dec-12 00:00 12 13 24.73 -66 56 42.3 -75.64 -367.36 n.a. n.a. 0.8958455333 23.67099 0.6127237044 28.12285 63.2936 /L 79.0488
1989-Dec-12 12:00 12 10 45.00 -68 09 06.9 -76.89 -356.83 n.a. n.a. 0.9027015644 23.80689 0.6209629723 28.93297 63.7927 /L 78.1009
1989-Dec-13 00:00 12 07 53.82 -69 19 25.6 -78.32 -346.38 n.a. n.a. 0.9095960090 23.93736 0.6294300331 29.70103 64.2734 /L 77.1663
1989-Dec-13 12:00 12 04 49.67 -70 27 39.4 -79.96 -336.02 n.a. n.a. 0.9165273235 24.06256 0.6381129383 30.42839 64.7356 /L 76.2457
1989-Dec-14 00:00 12 01 30.79 -71 33 49.6 -81.82 -325.76 n.a. n.a. 0.9234940118 24.18265 0.6470001391 31.11647 65.1794 /L 75.3396
1989-Dec-14 12:00 11 57 55.10 -72 37 57.1 -83.93 -315.58 n.a. n.a. 0.9304946251 24.29781 0.6560805022 31.76671 65.6049 /L 74.4483
1989-Dec-15 00:00 11 54 00.19 -73 40 03.1 -86.30 -305.49 n.a. n.a. 0.9375277618 24.40819 0.6653433183 32.38061 66.0124 /L 73.5722
1989-Dec-15 12:00 11 49 43.19 -74 40 08.4 -88.97 -295.47 n.a. n.a. 0.9445920639 24.51394 0.6747783021 32.95962 66.4022 /L 72.7114
1989-Dec-16 00:00 11 45 00.71 -75 38 13.7 -91.96 -285.49 n.a. n.a. 0.9516862180 24.61521 0.6843755954 33.50522 66.7747 /L 71.8661
1989-Dec-16 12:00 11 39 48.72 -76 34 19.3 -95.32 -275.51 n.a. n.a. 0.9588089533 24.71214 0.6941257626 34.01887 67.1300 /L 71.0362
1989-Dec-17 00:00 11 34 02.36 -77 28 24.9 -99.09 -265.49 n.a. n.a. 0.9659590398 24.80489 0.7040197827 34.50199 67.4688 /L 70.2218
1989-Dec-17 12:00 11 27 35.83 -78 20 29.7 -103.30 -255.35 n.a. n.a. 0.9731352884 24.89358 0.7140490433 34.95597 67.7913 /L 69.4228
1989-Dec-18 00:00 11 20 22.11 -79 10 31.9 -108.01 -245.03 n.a. n.a. 0.9803365492 24.97835 0.7242053301 35.38217 68.0980 /L 68.6391
1989-Dec-18 12:00 11 12 12.73 -79 58 28.6 -113.28 -234.41 n.a. n.a. 0.9875617096 25.05933 0.7344808127 35.78191 68.3894 /L 67.8705
1989-Dec-19 00:00 11 02 57.45 -80 44 15.5 -119.17 -223.36 n.a. n.a. 0.9948096945 25.13665 0.7448680356 36.15646 68.6659 /L 67.1169
1989-Dec-19 12:00 10 52 23.96 -81 27 46.2 -125.71 -211.69 n.a. n.a. 1.0020794649 25.21042 0.7553599035 36.50704 68.9280 /L 66.3780
1989-Dec-20 00:00 10 40 17.60 -82 08 52.0 -132.95 -199.17 n.a. n.a. 1.0093700154 25.28077 0.7659496655 36.83482 69.1761 /L 65.6537
1989-Dec-20 12:00 10 26 21.22 -82 47 21.4 -140.88 -185.54 n.a. n.a. 1.0166803751 25.34781 0.7766309046 37.14094 69.4107 /L 64.9437
1989-Dec-21 00:00 10 10 15.47 -83 22 58.7 -149.44 -170.44 n.a. n.a. 1.0240096060 25.41166 0.7873975217 37.42646 69.6323 /L 64.2476
1989-Dec-21 12:00 09 51 39.86 -83 55 24.3 -158.46 -153.49 n.a. n.a. 1.0313568006 25.47241 0.7982437201 37.69242 69.8413 /L 63.5653
1989-Dec-22 00:00 09 30 15.19 -84 24 13.3 -167.58 -134.29 n.a. n.a. 1.0387210829 25.53018 0.8091639947 37.93979 70.0381 /L 62.8965
1989-Dec-22 12:00 09 05 48.09 -84 48 56.8 -176.23 -112.52 n.a. n.a. 1.0461016067 25.58507 0.8201531168 38.16952 70.2233 /L 62.2408
1989-Dec-23 00:00 08 38 17.93 -85 09 03.1 -183.58 -88.09 n.a. n.a. 1.0534975534 25.63717 0.8312061188 38.38248 70.3971 /L 61.5980
1989-Dec-23 12:00 08 08 04.82 -85 24 01.9 -188.62 -61.37 n.a. n.a. 1.0609081331 25.68657 0.8423182849 38.57953 70.5602 /L 60.9678
1989-Dec-24 00:00 07 35 55.02 -85 33 30.7 -190.37 -33.29 n.a. n.a. 1.0683325830 25.73338 0.8534851369 38.76146 70.7127 /L 60.3500
1989-Dec-24 12:00 07 02 58.42 -85 37 21.4 -188.27 -5.29 n.a. n.a. 1.0757701651 25.77768 0.8647024204 38.92904 70.8553 /L 59.7441
1989-Dec-25 00:00 06 30 35.69 -85 35 44.9 -182.40 21.00 n.a. n.a. 1.0832201676 25.81955 0.8759660964 39.08298 70.9882 /L 59.1500
1989-Dec-25 12:00 05 59 59.86 -85 29 10.1 -173.47 44.25 n.a. n.a. 1.0906819031 25.85907 0.8872723289 39.22397 71.1118 /T 58.5673
1989-Dec-26 00:00 05 32 01.89 -85 18 18.6 -162.56 63.72 n.a. n.a. 1.0981547065 25.89634 0.8986174724 39.35266 71.2265 /T 57.9957
1989-Dec-26 12:00 05 07 06.34 -85 03 57.0 -150.75 79.30 n.a. n.a. 1.1056379367 25.93142 0.9099980651 39.46966 71.3327 /T 57.4351
1989-Dec-27 00:00 04 45 15.68 -84 46 50.3 -138.89 91.32 n.a. n.a. 1.1131309744 25.96439 0.9214108178 39.57556 71.4306 /T 56.8850
1989-Dec-27 12:00 04 26 18.28 -84 27 38.0 -127.51 100.31 n.a. n.a. 1.1206332206 25.99532 0.9328526033 39.67090 71.5206 /T 56.3453
1989-Dec-28 00:00 04 09 55.57 -84 06 53.1 -116.92 106.86 n.a. n.a. 1.1281440979 26.02428 0.9443204506 39.75620 71.6031 /T 55.8157
1989-Dec-28 12:00 03 55 47.06 -83 45 01.8 -107.24 111.47 n.a. n.a. 1.1356630485 26.05134 0.9558115351 39.83197 71.6783 /T 55.2958
1989-Dec-29 00:00 03 43 33.07 -83 22 24.4 -98.49 114.58 n.a. n.a. 1.1431895331 26.07657 0.9673231700 39.89866 71.7466 /T 54.7856
1989-Dec-29 12:00 03 32 56.05 -82 59 16.9 -90.61 116.55 n.a. n.a. 1.1507230319 26.10002 0.9788528013 39.95673 71.8082 /T 54.2847
1989-Dec-30 00:00 03 23 40.89 -82 35 51.3 -83.53 117.64 n.a. n.a. 1.1582630425 26.12177 0.9903979989 40.00658 71.8633 /T 53.7929
****************************************************************************************************************************************************
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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