KPL/MK

EnVision Example Trajectories
================================

VERSION:        3.1
CREATION_DATE:  2020/07/31
ORIGINATOR:     ESA/ESOC (P. Munoz)


CONTENT: Trajectory files in OEM (*.oem) and Spice Kernel (*.bsd) formats covering the full mission duration consistent to the latest mission baseline:

  - ESC_T4_2032_NorthVOI: baseline 2032 (long) interplanetary transfer with Venus Orbit Insertion over the Northern hemisphere (no changes w.r.t. version 3.0)



NOTES:

  - Trajectory data is consistent with JPL planetary ephemerides DE-432.

  - Aerobraking phase is not realistically modelled. Drag effect is emulated as several impulsive delta-Vs distributed throughout the aerobraking duration.

  - Venus gravity field expansion to 40x40 degree and order used for propagation of the science orbit.

  - Science orbit time span cover the nominal mission duration of 6 Venus cycles:

      o Baseline transfer T4_2032_N: 2035/06/15 - 2039/06/14

Edited note by ESAC to remove reference to other files delivered in the same release


   \begindata

     PATH_VALUES       = ( '..' )

     PATH_SYMBOLS      = ( 'KERNELS' )

     KERNELS_TO_LOAD   = (

                           '$KERNELS/fk/envision_v02.tf'
                           '$KERNELS/fk/estrack_v04.tf'
                           '$KERNELS/fk/earth_topo_050714.tf'
                           '$KERNELS/fk/earthfixeditrf93.tf'

                           '$KERNELS/ik/envision_venspec_v01.ti'

                           '$KERNELS/lsk/naif0012.tls'

                           '$KERNELS/sclk/envision_200715_fict.tsc'

                           '$KERNELS/pck/pck00010.tpc'
                           '$KERNELS/pck/de-403-masses.tpc'
                           '$KERNELS/pck/earth_200101_990628_predict.bpc'

                           '$KERNELS/spk/de432s.bsp'
                           '$KERNELS/spk/estrack_v04.bsp'
                           '$KERNELS/spk/earthstns_itrf93_050714.bsp'
                           '$KERNELS/spk/EnVision_T1_2032_NorthVOI_ML007_v01.bsp'

                           '$KERNELS/ck/EnVision_T1_2032_NorthVOI_ML007_v01.bc'

                         )

   \begintext


Contact Information
------------------------------------------------------------------------

   If you have any questions regarding this file contact the
   ESA SPICE Service (ESS) at ESAC:

           Alfredo Escalante Lopez
           (+34) 91-8131-429
           spice@sciops.esa.int


End of MK file.