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JPL/HORIZONS                     Dimorphos (Didymos I)                120065803
Updated: 2024-Mar-01       Solution (s542) date: 2023-Sep-19
 
This is the DART mission's post-impact reconstructed trajectory for Dimorphos, 
-satellite- of the 65803 Didymos system & the IMPACTED TARGET.

The trajectory data includes the pre- and post-impact ephemeris for Dimorphos.
For surface cartographic locations, pre- and post-impact Dimorphos rotation 
models are used automatically.

To use Dimorphos as a coordinate origin, set center to "@ 120065803". 

DART impact was on 26-Sep-2022 @ 23:14:24.183 UTC, equivalent to 2022-Sep-26
23:15:33.365359 TDB.

Related objects:
  DART spacecraft           :      -135 (mission navigation)
  LICIACube spacecraft      :      -210 (mission navigation)
  Didymos system barycenter :  20065803 (JPL s205 mission reconstruction)
                                 65803; (latest JPL ground-based solution)
  Didymos primary body      : 920065803 (JPL s542 reconstruction)

 Dimorphos physical parameters:
  Radii   ~ (0.09078 x 0.06932 x 0.06131) km, 145.6 m volume equivalent diam.
  Volume  ~ 0.001616 km^3
  GM_Dimo ~ 2.98047E-10 km^3/s^2
            Possible Dimorphos mass-ejection (0.1-0.5%) is not reflected here,
            perhaps measured later by follow-on ESA mission Hera.

 Pre-impact Dimorphos spin pole (ICRF at J2000.0 epoch, east long. positive)
  RA  =  69.32686 deg.  (310.0 deg. ecliptic longitude)
  DEC = -72.72455 deg.  (-80.6 deg. ecliptic latitude)
  PM  =  73.07056508 deg., 724.7243883 deg/day, 1.0271E-06 deg^2/day^2
         (period is 11.92177 hrs)

 Post-impact Dimorphos spin pole 
  A dynamic frame where the X axis points from Dimorphos center to Didymos 
  center. The Z axis is parallel to the pre-impact Z axis.
  RA  =  69.32686 deg.  (310.0 deg. ecliptic longitude)
  DEC = -72.72455 deg.  (-80.6 deg. ecliptic latitude)

 Name                                     Start (TDB)        Stop (TDB)
 ---------------------------------------  -----------------  -----------------
 didymos_system_s542_v01                  2000-Jan-01 00:00  2024-Dec-31 00:00
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Center mismatch IBOD= ***, CNTR= ***. Inform JPL.

!$$SOF
COMMAND = 'Dimorphos'
TABLE_TYPE = 'ELEMENTS'
START_TIME = '2022-09-26 23:15'
STOP_TIME = '2022-09-26 23:16'
STEP_SIZE = '1 minute'
CENTER = '@20065803'
OUT_UNITS = 'KM-D'