I ran this for where I will be tomorrow.
Current Settings
Ephemeris Type [change] : OBSERVER
Target Body [change] : Comet 73P/Schwassmann-Wachmann 3-BK
Observer Location [change] : user defined ( 77°12'00.0''W, 25°03'00.0''N )
Time Span [change] : Start=2006-05-25, Stop=2006-06-24, Step=1 d
Table Settings [change] : defaults
Object Data Page
JPL/HORIZONS 73P-BK/Schwassmann-Wachmann 3 2006-May-24 21:15:05
Rec #:900502 (+COV) Soln.date: 2006-May-01_10:54:31 # obs: 11 (6 days)
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):
EPOCH= 2453839.5 != 2006-Apr-14.0000000 (CT) Residual RMS= .63663
EC= .682439213725336 QR= .9399144844973562 TP= 2453895.46680829
OM= 69.84453516546674 W= 198.7994470534135 IN= 11.28399517882879
A= 2.959793920161185 MA= 349.16715812998 ADIST= 4.979673355825015
PER= 5.0921409089566 N= .193558329 ANGMOM= .021631932
DAN= 4.4675 DDN= .9607 L= 268.3054275
B= -3.6152787 TP= 2006-Jun-08.9668083
Physical & non-grav parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= n.a. A1= n.a.
A2= n.a. A3= n.a. DT= n.a.
M1= 23.7 M2= n.a. k1= 10.
k2= n.a. PHCOF= n.a.
COMET comments
1: soln ref.= JPL#1, data arc: 2006-Apr-20 to 2006-Apr-26
2: k1=10.0;
*******************************************************************************
Results
*******************************************************************************
Ephemeris / WWW_USER Wed May 24 21:15:06 2006 Pasadena, USA / Horizons
*******************************************************************************
Target body name: 73P-BK/Schwassmann-Wachmann 3 {source: JPL#1}
Center body name: Earth (399) {source: DE405}
Center-site name: (User Defined Site)
*******************************************************************************
Start time : A.D. 2006-May-25 00:00:00.0000 UT
Stop time : A.D. 2006-Jun-24 00:00:00.0000 UT
Step-size : 1440 minutes
*******************************************************************************
Center geodetic : 282.800000, 25.0500, -0.00{E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 282.800000, 5781.6712, 2684.09{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: DE405}
Interfering body: MOON (Req= 1737.400) km {source: DE405}
Deflecting body : Sun, EARTH {source: DE405}
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.060523.p060814
EOP coverage : DATA-BASED 1962-JAN-20 TO 2006-MAY-23. PREDICTS-> 2006-AUG-13
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= 2453839.5 != 2006-Apr-14.0000000 (CT) Residual RMS= .63663
EC= .682439213725336 QR= .9399144844973562 TP= 2453895.46680829
OM= 69.84453516546674 W= 198.7994470534135 IN= 11.28399517882879
Comet physical & dynamic parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= n.a. A1= n.a.
A2= n.a. A3= n.a. DT= n.a.
M1= 23.7 M2= n.a. k1= 10.
k2= n.a. PHCOF= n.a.
**************************************************************************************************************
Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC T-mag N-mag delta deldot S-O-T /r S-T-O
**************************************************************************************************************
$$SOE
2006-May-25 00:00 C 00 21 56.85 +06 28 04.9 18.34 n.a. .090931510219929 11.3131994 56.0603 /L 119.4574
2006-May-26 00:00 C 00 30 05.96 +04 14 34.5 18.48 n.a. .097512168642320 11.7600316 55.9587 /L 119.2237
2006-May-27 00:00 C 00 37 14.68 +02 18 26.5 18.61 n.a. .104321666974890 12.1223828 56.0510 /L 118.7724
2006-May-28 00:00 Cm 00 43 33.89 +00 37 07.5 18.74 n.a. .111317420465385 12.4174453 56.2864 /L 118.1573
2006-May-29 00:00 Cm 00 49 12.23 -00 51 33.9 18.86 n.a. .118465399781628 12.6584839 56.6273 /L 117.4189
2006-May-30 00:00 Cm 00 54 16.52 -02 09 29.0 18.98 n.a. .125738149955971 12.8556726 57.0453 /L 116.5878
2006-May-31 00:00 Cm 00 58 52.25 -03 18 10.8 19.09 n.a. .133113250037157 13.0168048 57.5199 /L 115.6866
2006-Jun-01 00:00 Cm 01 03 03.85 -04 18 57.1 19.20 n.a. .140572135011901 13.1478624 58.0355 /L 114.7326
2006-Jun-02 00:00 Cm 01 06 54.94 -05 12 52.8 19.31 n.a. .148099202181456 13.2534549 58.5808 /L 113.7388
2006-Jun-03 00:00 Cm 01 10 28.48 -06 00 52.4 19.41 n.a. .155681135057007 13.3371528 59.1473 /L 112.7150
2006-Jun-04 00:00 Cm 01 13 46.93 -06 43 41.5 19.51 n.a. .163306391025602 13.4017367 59.7288 /L 111.6688
2006-Jun-05 00:00 Cm 01 16 52.32 -07 21 58.8 19.60 n.a. .170964811276253 13.4493839 60.3205 /L 110.6062
2006-Jun-06 00:00 Cm 01 19 46.37 -07 56 17.0 19.70 n.a. .178647321677107 13.4818064 60.9190 /L 109.5316
2006-Jun-07 00:00 Cm 01 22 30.50 -08 27 04.2 19.78 n.a. .186345701354727 13.5003544 61.5217 /L 108.4488
2006-Jun-08 00:00 Cm 01 25 05.94 -08 54 44.1 19.87 n.a. .194052401963617 13.5060940 62.1267 /L 107.3606
2006-Jun-09 00:00 Cm 01 27 33.72 -09 19 37.6 19.95 n.a. .201760405497464 13.4998675 62.7326 /L 106.2694
2006-Jun-10 00:00 Cm 01 29 54.70 -09 42 02.5 20.04 n.a. .209463112376947 13.4823411 63.3384 /L 105.1771
2006-Jun-11 00:00 Cm 01 32 09.66 -10 02 14.5 20.12 n.a. .217154254680133 13.4540471 63.9435 /L 104.0852
2006-Jun-12 00:00 C 01 34 19.22 -10 20 27.4 20.19 n.a. .224827831741021 13.4154214 64.5475 /L 102.9951
2006-Jun-13 00:00 C 01 36 23.93 -10 36 53.1 20.27 n.a. .232478066676902 13.3668392 65.1500 /L 101.9077
2006-Jun-14 00:00 C 01 38 24.27 -10 51 42.6 20.35 n.a. .240099382458592 13.3086479 65.7510 /L 100.8241
2006-Jun-15 00:00 C 01 40 20.62 -11 05 05.4 20.42 n.a. .247686394980990 13.2411932 66.3506 /L 99.7449
2006-Jun-16 00:00 C 01 42 13.34 -11 17 10.2 20.49 n.a. .255233918890791 13.1648375 66.9489 /L 98.6708
2006-Jun-17 00:00 * 01 44 02.70 -11 28 04.6 20.56 n.a. .262736980713416 13.0799674 67.5462 /L 97.6022
2006-Jun-18 00:00 * 01 45 48.94 -11 37 55.6 20.63 n.a. .270190833865952 12.9869933 68.1426 /L 96.5396
2006-Jun-19 00:00 * 01 47 32.27 -11 46 49.6 20.70 n.a. .277590971415597 12.8863433 68.7386 /L 95.4832
2006-Jun-20 00:00 * 01 49 12.85 -11 54 52.2 20.77 n.a. .284933134230953 12.7784540 69.3344 /L 94.4335
2006-Jun-21 00:00 * 01 50 50.83 -12 02 08.5 20.83 n.a. .292213313667767 12.6637613 69.9305 /L 93.3906
2006-Jun-22 00:00 * 01 52 26.32 -12 08 43.3 20.90 n.a. .299427748778756 12.5426910 70.5272 /L 92.3548
2006-Jun-23 00:00 * 01 53 59.42 -12 14 40.7 20.96 n.a. .306572918407197 12.4156508 71.1249 /L 91.3262
2006-Jun-24 00:00 * 01 55 30.22 -12 20 04.6 21.03 n.a. .313645528812249 12.2830232 71.7239 /L 90.3050
$$EOE
**************************************************************************************************************
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.
SOLAR PRESENCE
Time tag is followed by a blank, then a solar-presence symbol:
'*' Daylight (refracted solar upper-limb on or above apparent horizon)
'C' Civil twilight/dawn
'N' Nautical twilight/dawn
'A' Astronomical twilight/dawn
' ' Night OR geocentric ephemeris
LUNAR PRESENCE
The solar-presence symbol is immediately followed by a lunar-presence symbol:
'm' Refracted upper-limb of Moon on or above apparent horizon
' ' Refracted upper-limb of Moon below apparent horizon OR geocentric
ephemeris
R.A._(ICRF/J2000.0)_DEC =
J2000.0 astrometric right ascension and declination of target. Corrected
for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
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
delta deldot =
Target apparent range ("delta") and range-rate ("delta-dot") relative to
observer at print-time. "deldot" is a projection along the line-of-sight from
the coordinate center and indicates direction of motion. A positive deldot
means the target is moving away from the observer/coordinate-center. A negative
deldot means the target is moving towards the 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