LTP05 has been confirmed to run from 2021-09-27T00:00:00Z until 2021-12-27T00:00:00.000Z.

In March 2021, it was decided to change the typical duration of an LTP from 6 to 3 months, in order to allow Flight Dynamics to produce stable LTP input and to add flexibility by planning LTP closer to the execution dates.
This page has been constructed from the original page LTP04 July 2021-Sep 2021, started at MLP (Oct 2020), by copying over all information regarding the period Oct-Dec 2021.

Orbital context

Plots are in GSE (geocentric solar ecliptic) coordinates, so Earth is at [0,0], the Sun is at [1,0]. The plot is the projection of the orbit on the ecliptic plane.

Animated Version: Orbit_GSE_2021H2.mp4

New definition for the grey shading representing downlink rates:

RS checkout window placement

No RS checkout windows in LTP5.

Note that the first month of NMP is covered by this LTP: NMP starts officially at the Earth GAM on 2021-11-27. Nominal IS and RS science will start after the navigation window (~4 Dec 2021).

GAMs and conjunctions

Science and calibration planning

Note the text in red highlights adjustments still to be made in SOOP Kitchen plan during Long Term Planning

IS calibrations:

RS calibrations: 

Context: TN on star calibration opportunities and planetary transits 

IS-only science:

Coordinated science (and cross-calibration) campaigns:

These address the opportunities identified during SWT 27 (listed in the table below)

(star) Note that the coordinated off-pointing campaigns and rolls need to be requested to MOC (flight dynamics) before LTP planning and timing/details cannot be changed anymore at time of Long Term Planning.

HS door operations

LTP5 starts with all HSDs open, except EUI/HRI closed.

Following HS door operations are proposed, refined and confirmed during SOWG (detailed timeline in SPKT):

Context from mission level planning during SWT27 (Oct 2020)

Since launch, comms performance has been found to be much better than baselined, so there is significant scope for extra activities. These were handled directly by the SOWG for LTP2 and LTP3, however for LTP4 the priorities for how to use the additional telemetry will be set by the SWT in line with the expected procedure for the nominal mission phase. The new level of available telemetry is summarised in the below plot. The decision taken by the SWT in order to use this Telemetry are reflected in the information above. This section is left here for context.

Note there will be some carry-over of data from LTP3 and 4, and the SSMM will need to be empty close to the EGAM to allow for repartitioning.

First priority will be given to completing any necessary calibration and characterisation campaigns, followed by addressing the science priorities decided by the SWT.


Context for PSP coordination:


Orbit plots courtesy of V. Andretta.

SOOP Kitchen plan

High-level (=MLP) plan of whole cruise:

Starting point for LTP05 planning in SOWG#18: https://solarorbiter.esac.esa.int/soopkitchen/#/planning/plan/LTP05_Sep2021-Dec2021/215 

Final plan LTP05: https://solarorbiter.esac.esa.int/soopkitchen/#/planning/plan/LTP05_Sep2021-Dec2021 (baseline 8 is the plan distributed on 30 July '21 as LTP5 V01 incl. EFECS at V02)


Reference material

Inputs to pre-LTP05 Technical Note

Slides presented at SWT #29 are now here: LTP05 at SWT 29.pptx