Current Settings
Ephemeris Type [change] : OBSERVER
Target Body [change] : Pioneer 10 Spacecraft [-23]
Observer Location [change] : Geocentric [500]
Time Span [change] : Start=2008-12-29, Stop=2008-12-30, Step=1 d
Table Settings [change] : QUANTITIES=1,21
Display/Output [change] : default (formatted HTML)
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Object Data Page
Revised: Jul 27, 2005 Pioneer 10 Spacecraft (interplanetary) / (Sun) -23
http://nssdc.gsfc.nasa.gov/nmc/tmp/1972-012A.html
BACKGROUND
This mission was the first to be sent to the outer solar system and the
first to investigate the planet Jupiter, after which it followed an
escape trajectory from the solar system.
The spacecraft achieved its closest approach to Jupiter on December 4, 1973
(UTC), when it reached approximately 2.8 Jovian radii (about 200,000 km).
Last fully successful acquisition of signal was March 3, 2002. Pioneer 10
signal at the Earth (185 dBm) is now at DSN threshold limit of reception.
Launched : 1972-03-03 at 01:49:00 UTC
On-orbit dry mass : 258 kg
Nominal Power Output: 165 W
SPACECRAFT TRAJECTORY: ("pfile10.nio")
NOTE: This trajectory is suitable for general historical purposes, but should
be used cautiously for high precision or tracking data applications. This is
due to potential dynamical mismatches between the Pioneer-10 era models
(DE-118, Lieske's E3 satellite theory of JUP035, etc.) and the current modern
solutions used by Horizons. For example, if the Pioneer-10 solutions used
here planet or satellite ephemeris corrections estimated at the time.
However, the transformation from the original DE-118 planetary ephemeris
coordinate system to the modern frame IS computed by Horizons.
Trajectory was provided by JPL Navigation Team. JPL Multimission NAV and
Solar System Dynamics Group source files merged:
PN10A, PN10B, PN10C, PN10D, PN10E, PN10F, PN10G, DE118
The circumstances pertaining to the regeneration of the spacecraft
trajectory source files, PN10*, are not well known.
DE118 is a standard JPL planet ephemeris for the P10 Jupiter flyby era.
Results
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Ephemeris / WWW_USER Mon Dec 29 03:06:36 2008 Pasadena, USA / Horizons
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Target body name: Pioneer 10 Spacecraft (-23) {source: pfile10.nio}
Center body name: Earth (399) {source: DE405}
Center-site name: GEOCENTRIC
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Start time : A.D. 2008-Dec-29 00:00:00.0000 UT
Stop time : A.D. 2008-Dec-30 00:00:00.0000 UT
Step-size : 1440 minutes
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Target pole/equ : No model available
Target radii : (unavailable)
Center geodetic : .000000000,.000000000,.00000000 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: .000000000,.000000000,.00000000 {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 primary : Sun {source: DE405+DE406}
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
Atmos refraction: NO (AIRLESS)
RA format : HMS
Time format : CAL
EOP file : eop.081226.p090319
EOP coverage : DATA-BASED 1962-JAN-20 TO 2008-DEC-26. PREDICTS-> 2009-MAR-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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Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC 1-way_LT
*********************************************************
$$SOE
2008-Dec-29 00:00 05 07 58.20 +25 57 21.6
801.161235
2008-Dec-30 00:00 05 07 55.71 +25 57 17.8 801.268342
$$EOE
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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._(ICRF/J2000.0)_DEC =
J2000.0 astrometric right ascension and declination of target center.
Corrected for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
1-way_LT =
1-way down-leg light-time from target center to observer. The elapsed time
since light (observed at print-time) would have left or reflected off a point
at the center of the target. Units: MINUTES
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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