Ephemeris Generator
Ephemeris Settings
Target Body: *Comet 19P/Borrelly [0]*
Observer Location: *Geocentric [Code=500]*
Coordinates: *0 00'00.0''E, 0 00'00.0''N, -6378140. m*
From: *A.D. 1988-01-10 00:00 UT*
To: *A.D. 1988-02-20 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*
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HORIZONS Generated Ephemeris
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Ephemeris / WWW_USER Tue Mar 1 11:41:59 2005 Pasadena, USA / Horizons
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Target body name: 19P/Borrelly {source: JPL#K013/75}
Center body name: Earth (399) {source: DE-0406LE-0406}
Center-site name: GEOCENTRIC
*******************************************************************************
Start time : A.D. 1988-Jan-10 00:00:00.0000 UT
Stop time : A.D. 1988-Feb-20 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 : 2.4 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
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.050225.p050519
EOP coverage : DATA-BASED 1962-JAN-20 TO 2005-FEB-25. PREDICTS-> 2005-MAY-18
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= 2452174.5 != 2001-Sep-22.0000000 (CT) Residual RMS= .80434
EC= .6239084847276573 QR= 1.358203173986443 TP= 2452167.231151452
OM= 75.42486936382598 W= 353.3753852064419 IN= 30.32461189447627
Comet physical & dynamic parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= 2.4 A1= 3.236068D-10
A2= -3.834891D-10 A3= n.a. DT= n.a.
M1= 4. M2= n.a. k1= 19.5
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
****************************************************************************************************************************************************
1988-Jan-10 00:00 02 33 42.68 +27 55 51.9 35.76 122.96 5.76 n.a. 1.3822237323 3.82477 0.6377900696 14.27119 115.3435 /T 40.0096
1988-Jan-11 00:00 02 34 49.17 +28 44 30.2 37.40 120.23 5.81 n.a. 1.3844804879 3.98354 0.6461089306 14.53511 114.7692 /T 40.1589
1988-Jan-12 00:00 02 35 59.13 +29 32 03.5 39.00 117.54 5.85 n.a. 1.3868285781 4.14109 0.6545778296 14.79082 114.2021 /T 40.2974
1988-Jan-13 00:00 02 37 12.56 +30 18 32.7 40.56 114.89 5.89 n.a. 1.3892672788 4.29736 0.6631920758 15.03849 113.6422 /T 40.4255
1988-Jan-14 00:00 02 38 29.43 +31 03 58.7 42.08 112.28 5.94 n.a. 1.3917958443 4.45232 0.6719470882 15.27833 113.0898 /T 40.5430
1988-Jan-15 00:00 02 39 49.74 +31 48 22.5 43.57 109.71 5.98 n.a. 1.3944135080 4.60594 0.6808383854 15.51048 112.5449 /T 40.6502
1988-Jan-16 00:00 02 41 13.46 +32 31 45.1 45.02 107.18 6.03 n.a. 1.3971194829 4.75818 0.6898615701 15.73508 112.0076 /T 40.7472
1988-Jan-17 00:00 02 42 40.59 +33 14 07.6 46.43 104.69 6.07 n.a. 1.3999129633 4.90901 0.6990123114 15.95223 111.4779 /T 40.8341
1988-Jan-18 00:00 02 44 11.10 +33 55 30.9 47.81 102.25 6.12 n.a. 1.4027931246 5.05839 0.7082863294 16.16201 110.9560 /T 40.9111
1988-Jan-19 00:00 02 45 44.97 +34 35 56.3 49.16 99.86 6.16 n.a. 1.4057591251 5.20631 0.7176793891 16.36449 110.4417 /T 40.9785
1988-Jan-20 00:00 02 47 22.19 +35 15 24.7 50.47 97.51 6.21 n.a. 1.4088101064 5.35272 0.7271873106 16.55980 109.9351 /T 41.0364
1988-Jan-21 00:00 02 49 02.73 +35 53 57.2 51.75 95.20 6.26 n.a. 1.4119451947 5.49761 0.7368059981 16.74812 109.4360 /T 41.0851
1988-Jan-22 00:00 02 50 46.57 +36 31 34.8 52.99 92.94 6.31 n.a. 1.4151635009 5.64095 0.7465314819 16.92969 108.9445 /T 41.1249
1988-Jan-23 00:00 02 52 33.68 +37 08 18.7 54.19 90.72 6.35 n.a. 1.4184641226 5.78271 0.7563599617 17.10485 108.4605 /T 41.1559
1988-Jan-24 00:00 02 54 24.04 +37 44 09.8 55.36 88.54 6.40 n.a. 1.4218461439 5.92288 0.7662878401 17.27397 107.9837 /T 41.1786
1988-Jan-25 00:00 02 56 17.62 +38 19 09.1 56.49 86.41 6.45 n.a. 1.4253086372 6.06143 0.7763117398 17.43744 107.5140 /T 41.1931
1988-Jan-26 00:00 02 58 14.38 +38 53 17.7 57.58 84.31 6.50 n.a. 1.4288506632 6.19834 0.7864285047 17.59562 107.0514 /T 41.1997
1988-Jan-27 00:00 03 00 14.31 +39 26 36.4 58.64 82.25 6.55 n.a. 1.4324712725 6.33361 0.7966351910 17.74889 106.5955 /T 41.1988
1988-Jan-28 00:00 03 02 17.36 +39 59 06.2 59.67 80.23 6.60 n.a. 1.4361695061 6.46720 0.8069290528 17.89756 106.1463 /T 41.1906
1988-Jan-29 00:00 03 04 23.50 +40 30 47.9 60.67 78.25 6.65 n.a. 1.4399443963 6.59911 0.8173075270 18.04195 105.7035 /T 41.1755
1988-Jan-30 00:00 03 06 32.71 +41 01 42.4 61.64 76.30 6.70 n.a. 1.4437949674 6.72933 0.8277682185 18.18232 105.2669 /T 41.1536
1988-Jan-31 00:00 03 08 44.94 +41 31 50.6 62.58 74.38 6.75 n.a. 1.4477202369 6.85784 0.8383088881 18.31895 104.8365 /T 41.1253
1988-Feb-01 00:00 03 11 00.17 +42 01 13.2 63.49 72.50 6.80 n.a. 1.4517192159 6.98463 0.8489274405 18.45206 104.4119 /T 41.0907
1988-Feb-02 00:00 03 13 18.37 +42 29 51.0 64.37 70.65 6.85 n.a. 1.4557909099 7.10970 0.8596219144 18.58189 103.9929 /T 41.0502
1988-Feb-03 00:00 03 15 39.50 +42 57 44.7 65.23 68.83 6.90 n.a. 1.4599343199 7.23304 0.8703904719 18.70864 103.5795 /T 41.0041
1988-Feb-04 00:00 03 18 03.54 +43 24 55.1 66.06 67.04 6.95 n.a. 1.4641484430 7.35463 0.8812313885 18.83249 103.1714 /T 40.9524
1988-Feb-05 00:00 03 20 30.46 +43 51 22.9 66.87 65.28 7.01 n.a. 1.4684322728 7.47448 0.8921430433 18.95362 102.7684 /T 40.8955
1988-Feb-06 00:00 03 23 00.22 +44 17 08.7 67.65 63.54 7.06 n.a. 1.4727848007 7.59258 0.9031239088 19.07218 102.3704 /T 40.8336
1988-Feb-07 00:00 03 25 32.81 +44 42 13.1 68.42 61.83 7.11 n.a. 1.4772050161 7.70893 0.9141725419 19.18831 101.9772 /T 40.7669
1988-Feb-08 00:00 03 28 08.19 +45 06 36.8 69.16 60.15 7.16 n.a. 1.4816919075 7.82353 0.9252875743 19.30212 101.5885 /T 40.6956
1988-Feb-09 00:00 03 30 46.33 +45 30 20.4 69.88 58.49 7.21 n.a. 1.4862444626 7.93638 0.9364677037 19.41374 101.2044 /T 40.6199
1988-Feb-10 00:00 03 33 27.20 +45 53 24.4 70.58 56.85 7.27 n.a. 1.4908616695 8.04747 0.9477116840 19.52324 100.8245 /T 40.5399
1988-Feb-11 00:00 03 36 10.77 +46 15 49.5 71.26 55.24 7.32 n.a. 1.4955425170 8.15682 0.9590183141 19.63069 100.4488 /T 40.4559
1988-Feb-12 00:00 03 38 57.01 +46 37 36.2 71.93 53.65 7.37 n.a. 1.5002859953 8.26441 0.9703864245 19.73613 100.0771 /T 40.3680
1988-Feb-13 00:00 03 41 45.89 +46 58 45.0 72.57 52.08 7.42 n.a. 1.5050910964 8.37027 0.9818148604 19.83958 99.7093 /T 40.2763
1988-Feb-14 00:00 03 44 37.36 +47 19 16.4 73.20 50.53 7.48 n.a. 1.5099568151 8.47438 0.9933024630 19.94100 99.3452 /T 40.1811
1988-Feb-15 00:00 03 47 31.40 +47 39 10.8 73.81 49.00 7.53 n.a. 1.5148821488 8.57677 1.0048480499 20.04035 98.9847 /T 40.0825
1988-Feb-16 00:00 03 50 27.95 +47 58 28.8 74.40 47.49 7.58 n.a. 1.5198660988 8.67743 1.0164504018 20.13754 98.6278 /T 39.9806
1988-Feb-17 00:00 03 53 26.98 +48 17 10.8 74.97 46.00 7.63 n.a. 1.5249076701 8.77636 1.0281082594 20.23253 98.2742 /T 39.8756
1988-Feb-18 00:00 03 56 28.43 +48 35 17.2 75.52 44.53 7.69 n.a. 1.5300058725 8.87359 1.0398203392 20.32530 97.9239 /T 39.7676
1988-Feb-19 00:00 03 59 32.27 +48 52 48.3 76.06 43.07 7.74 n.a. 1.5351597204 8.96912 1.0515853656 20.41588 97.5767 /T 39.6567
1988-Feb-20 00:00 04 02 38.44 +49 09 44.6 76.57 41.63 7.79 n.a. 1.5403682337 9.06295 1.0634021132 20.50441 97.2326 /T 39.5431
****************************************************************************************************************************************************
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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