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134 lines
6.0 KiB
Plaintext
134 lines
6.0 KiB
Plaintext
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Revised: Apr 21, 2022 Mars Reconnaisance Orbiter (MRO) / (Sun) -74
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http://marsprogram.jpl.nasa.gov/mro/
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NOTE (2014-Jun-10):
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C/2013 A1 (Siding Spring) will have its closest approach to Mars on Oct 19,
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2014 at a distance of about 135,000 km.
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Location of predicted MRO minimum risk from comet particles
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(occultation mid-point):
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Latitude: 7.6083 deg
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Time: 19-OCT-2014 20:08:07.182392952 ET (CSS CA + 98 min)
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MISSION LAUNCH DATE: MARS ARRIVAL DATE:
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Aug 12, 2005 11:43 UTC (it's up and away) March 10, 2006
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Notes: Aug 10, 2005: Original launch was scrubbed (gyros)
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Aug 11, 2005: Second attemped was launch scrubbed (fueling sensors)
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LAUNCH VEHICLE:
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Atlas V two-stage. Separation from Centaur: 2005-Aug-12 12:40:51.68 UTC
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BACKGROUND:
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MRO aerobraked for 6 months from the post-insertion 35 hour orbit, saving
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450 kg of fuel. Primary science phase starts in November of 2006 and
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nominally operates for 2 Earth years from a 112 minute, near circular polar
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orbit.
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SPACECRAFT PHYSICAL PROPERTIES:
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Height= 6.5 m Solar panels = 20 m^2
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Width = 13.6 m (tip-to-tip) launch weight= 2180 kg
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SPACECRAFT TRAJECTORY:
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Trajectory starts after Centaur launch stage separation (cruise phase).
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Trajectory after 2022-Apr-21 is PREDICTION.
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Trajectory files (from MRO Nav., JPL) Start (TDB) End (TDB)
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-------------------------------------- ----------------- -----------------
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mro_cruise 2005-Aug-12 12:42 2006-Mar-10 22:06
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mro_ab 2006-Mar-10 22:06 2006-Sep-12 06:40
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misc reconstruction (mro_psp1-62) 2006-Sep-12 06:40 2022-Apr-01 01:01
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mro_psp_rec 2022-Apr-01 01:01 2022-Apr-17 16:34
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mro_psp 2022-Apr-17 16:34 2022-Sep-02 02:55
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*******************************************************************************
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*******************************************************************************
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Ephemeris / API_USER Mon May 23 05:19:05 2022 Pasadena, USA / Horizons
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Target body name: Mars Reconnaissance Orbiter (spacecraft) (-74) {source: MRO_MERGED}
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Center body name: Mars Barycenter (4) {source: DE441}
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Center-site name: BODY CENTER
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*******************************************************************************
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Start time : A.D. 2022-May-22 00:00:00.0000 TDB
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Stop time : A.D. 2022-May-23 00:00:00.0000 TDB
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Step-size : 720 minutes
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*******************************************************************************
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Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)}
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Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)}
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Center radii : (undefined)
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Output units : KM-S
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Output type : GEOMETRIC cartesian states
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Output format : 1 (position only)
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Reference frame : Ecliptic of J2000.0
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*******************************************************************************
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JDTDB
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X Y Z
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*******************************************************************************
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$$SOE
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2459721.500000000 = A.D. 2022-May-22 00:00:00.0000 TDB
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2.615353755143860E+03 5.410112782583881E+02 -2.491150185148976E+03
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2459722.000000000 = A.D. 2022-May-22 12:00:00.0000 TDB
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-3.495159540344693E+03 -5.551069096048225E+02 9.252465537814477E+02
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2459722.500000000 = A.D. 2022-May-23 00:00:00.0000 TDB
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3.491185350937938E+03 4.083500559468409E+02 1.096540860137564E+03
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$$EOE
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*******************************************************************************
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TIME
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Barycentric Dynamical Time ("TDB" or T_eph) output was requested. This
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continuous relativistic coordinate time is equivalent to the relativistic
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proper time of a clock at rest in a reference frame comoving with the
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solar system barycenter but outside the system's gravity well. It is the
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independent variable in the solar system relativistic equations of motion.
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TDB runs at a uniform rate of one SI second per second and is independent
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of irregularities in Earth's rotation.
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Calendar dates prior to 1582-Oct-15 are in the Julian calendar system.
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Later calendar dates are in the Gregorian system.
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REFERENCE FRAME AND COORDINATES
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Ecliptic at the standard reference epoch
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Reference epoch: J2000.0
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X-Y plane: adopted Earth orbital plane at the reference epoch
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Note: IAU76 obliquity of 84381.448 arcseconds wrt ICRF X-Y plane
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X-axis : ICRF
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Z-axis : perpendicular to the X-Y plane in the directional (+ or -) sense
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of Earth's north pole at the reference epoch.
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Symbol meaning:
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JDTDB Julian Day Number, Barycentric Dynamical Time
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X X-component of position vector (km)
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Y Y-component of position vector (km)
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Z Z-component of position vector (km)
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ABERRATIONS AND CORRECTIONS
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Geometric state vectors have NO corrections or aberrations applied.
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Computations by ...
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Solar System Dynamics Group, Horizons On-Line Ephemeris System
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4800 Oak Grove Drive, Jet Propulsion Laboratory
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Pasadena, CA 91109 USA
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General site: https://ssd.jpl.nasa.gov/
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Mailing list: https://ssd.jpl.nasa.gov/email_list.html
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System news : https://ssd.jpl.nasa.gov/horizons/news.html
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User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html
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Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x
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API https://ssd-api.jpl.nasa.gov/doc/horizons.html
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command-line telnet ssd.jpl.nasa.gov 6775
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e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/hrzn_batch.txt
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scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS
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Author : Jon.D.Giorgini@jpl.nasa.gov
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*******************************************************************************
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