Ephemeris Generator Ephemeris Settings Target Body: Comet P/Machholz 2 (1994 P1-A) [1994] Observer Location: Geocentric [Code=500] From: A.D. 1994-10-13 10:31 UT To: A.D. 1994-10-14 10:22 Step: 1 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 21:51:56 1999 Pasadena, USA / JPL-Horizons ******************************************************************************* Target body name: Machholz 2 {source: JPL#31-DASTCOM3} Center body name: Earth (399) {source: DE-0406LE-0406} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 1994-Oct-13 10:31:00.0000 UT Stop time : A.D. 1994-Oct-14 10:22:00.0000 UT Step-size : 60 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 : (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 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= 2449600.5 != 1994-Sep-05.0000000 (TDB) EC= .750231434 QR= .75254593 TP= 2449614.3023221 OM= 246.1806727 W= 149.2582077 IN= 12.7871923 Comet physical & dynamic parameters: GM= n.a. RAD= n.a. A1= n.a. A2= n.a. M1= 12. M2= 16.5 k1= 30. k2= 5. PHCOF= .030 ************************************************************************************************************************************************* 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 ************************************************************************************************************************************************* 1994-Oct-13 10:31 09 53 55.78 +09 44 48.8 86.63 -78.66 9.90 18.05 0.8600053821 13.73524 0.9378212134 17.35188 52.6489 67.2540 1994-Oct-13 11:31 09 54 01.64 +09 43 30.2 86.59 -78.62 9.90 18.05 0.8603362063 13.75058 0.9382386117 17.34036 52.6605 67.2210 1994-Oct-13 12:31 09 54 07.49 +09 42 11.6 86.56 -78.57 9.91 18.05 0.8606673989 13.76588 0.9386557326 17.32882 52.6721 67.1880 1994-Oct-13 13:31 09 54 13.34 +09 40 53.0 86.52 -78.52 9.91 18.05 0.8609989594 13.78115 0.9390725759 17.31728 52.6838 67.1550 1994-Oct-13 14:31 09 54 19.19 +09 39 34.6 86.49 -78.47 9.92 18.05 0.8613308869 13.79640 0.9394891412 17.30572 52.6954 67.1220 1994-Oct-13 15:31 09 54 25.04 +09 38 16.1 86.45 -78.42 9.93 18.05 0.8616631808 13.81161 0.9399054284 17.29416 52.7071 67.0891 1994-Oct-13 16:31 09 54 30.89 +09 36 57.7 86.42 -78.38 9.93 18.06 0.8619958405 13.82680 0.9403214372 17.28258 52.7188 67.0562 1994-Oct-13 17:31 09 54 36.73 +09 35 39.4 86.38 -78.33 9.94 18.06 0.8623288652 13.84196 0.9407371674 17.27100 52.7305 67.0233 1994-Oct-13 18:31 09 54 42.57 +09 34 21.1 86.35 -78.28 9.94 18.06 0.8626622543 13.85709 0.9411526187 17.25940 52.7422 66.9905 1994-Oct-13 19:31 09 54 48.40 +09 33 02.8 86.31 -78.23 9.95 18.06 0.8629960069 13.87219 0.9415677909 17.24780 52.7539 66.9577 1994-Oct-13 20:31 09 54 54.24 +09 31 44.6 86.28 -78.18 9.96 18.06 0.8633301226 13.88726 0.9419826837 17.23618 52.7657 66.9250 1994-Oct-13 21:31 09 55 00.07 +09 30 26.5 86.24 -78.13 9.96 18.06 0.8636646006 13.90231 0.9423972971 17.22455 52.7774 66.8922 1994-Oct-13 22:31 09 55 05.90 +09 29 08.4 86.21 -78.09 9.97 18.06 0.8639994401 13.91732 0.9428116305 17.21292 52.7892 66.8595 1994-Oct-13 23:31 09 55 11.72 +09 27 50.3 86.17 -78.04 9.97 18.06 0.8643346405 13.93231 0.9432256837 17.20127 52.8010 66.8269 1994-Oct-14 00:31 09 55 17.55 +09 26 32.3 86.14 -77.99 9.98 18.06 0.8646702012 13.94727 0.9436394566 17.18962 52.8128 66.7942 1994-Oct-14 01:31 09 55 23.37 +09 25 14.4 86.10 -77.94 9.99 18.06 0.8650061213 13.96220 0.9440529490 17.17795 52.8246 66.7616 1994-Oct-14 02:31 09 55 29.18 +09 23 56.4 86.07 -77.90 9.99 18.06 0.8653424003 13.97710 0.9444661605 17.16627 52.8364 66.7290 1994-Oct-14 03:31 09 55 35.00 +09 22 38.6 86.03 -77.85 10.00 18.06 0.8656790375 13.99198 0.9448790910 17.15459 52.8482 66.6965 1994-Oct-14 04:31 09 55 40.81 +09 21 20.8 86.00 -77.80 10.00 18.07 0.8660160321 14.00682 0.9452917403 17.14289 52.8601 66.6640 1994-Oct-14 05:31 09 55 46.62 +09 20 03.0 85.96 -77.75 10.01 18.07 0.8663533835 14.02164 0.9457041080 17.13119 52.8720 66.6315 1994-Oct-14 06:31 09 55 52.43 +09 18 45.3 85.92 -77.70 10.02 18.07 0.8666910910 14.03643 0.9461161939 17.11947 52.8839 66.5991 1994-Oct-14 07:31 09 55 58.23 +09 17 27.6 85.89 -77.66 10.02 18.07 0.8670291540 14.05119 0.9465279979 17.10775 52.8957 66.5667 1994-Oct-14 08:31 09 56 04.03 +09 16 10.0 85.85 -77.61 10.03 18.07 0.8673675717 14.06592 0.9469395196 17.09601 52.9077 66.5343 1994-Oct-14 09:31 09 56 09.83 +09 14 52.4 85.82 -77.56 10.03 18.07 0.8677063435 14.08062 0.9473507589 17.08427 52.9196 66.5019 ************************************************************************************************************************************************* 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