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.
second part of 7th orbit + 8th orbit in EMP: 5 RS windows, N and S windows reach max latitude 31º ; 2 perihelia at 0.3AU.
RS window (default) placement
Period | Window/GAM | EXT Start | Start | End | Hcentric | Distance | Range | Hgraphic | Latitude | Range | SC-Sun-Earth Angle | Conjunction | Safe Mode Comms Blackout | Comms Roll | GAM Restrictions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MTP 18 | Perihelion | 2027-06-30 | 2027-07-04 | 2027-07-14 | 0.32 | 0.30 | 0.32 | -16.52 | 04.54 | 20.97 | NO | NO | NO | ||
| MTP 18 | North | 2027-07-15 | 2027-07-19 | 2027-07-29 | 0.35 | 0.41 | 0.47 | 28.53 | 31.25 | 29.28 | NO | NO | NO | ||
| MTP 18 | South | 2027-10-26 | 2027-10-30 | 2027-11-09 | 0.50 | 0.44 | 0.38 | -29.89 | -31.30 | -29.17 | NO | NO | NO | ||
| MTP 18 | Perihelion | 2027-11-12 | 2027-11-16 | 2027-11-26 | 0.32 | 0.30 | 0.32 | -15.99 | 05.21 | 21.43 | YES (RSW Days 6 and 7) | YES (RSW Days 6 and 7) | NO | ||
| MTP 18 | North | 2027-11-26 | 2027-11-30 | 2027-12-10 | 0.34 | 0.41 | 0.46 | 27.42 | 31.31 | 29.74 | NO | NO | NO |
Proposal
MTP18 - full 8th orbit (i.e. RSwindows 3, 4 and 5):
- During this orbit, RS observations can run from pole to pole with minimal interruption. This is particularly interesting for L_Pole-to-Pole SOOP.
- Alternatively, if RSwindows can be linked together: L_FULL_LRES_MCAD_Coronal_Synoptic (also requires long duration RS observations)
- Other candidate: run R_FULL_HRES_HCAD_Density-Fluctuations at each RSwindow (not too far out for Metis to still see the density fluctuations). 8 hour per window should be enough. Metis is leading, thus disk-centre pointing!
- Yet other alternative for this orbit with a fast scan through big range of latitudes: L_SMALL_HRES_HCAD_Fast-Wind to address 1.1.1.1 Low FIP fast wind origins
MTP18 - First North:
- North windows are one of closest high-lat windows, and thus suitable for L_SMALL_HRES_HCAD_Fast-Wind to address 1.1.1.2 Origin of the small-scale X-ray and UV jets in polar coronal holes
- 1st North window also suitable study CME initiation and structure (close to the Sun), with pointing to ARs. Earth context preferred for modelling and CME context: R_SMALL_HRES_HCAD_AR-Dynamics
- L_FULL_MRES_MCAD_Flare_SEPs : benefits of close distance + high latitude + radial alignment with Earth. SPP would be big asset as well.
MTP18 - Second North:
- As above, also this North window is one of closest high-lat windows, and thus suitable for L_SMALL_HRES_HCAD_Fast-Wind to address 1.1.1.2 Origin of the small-scale X-ray and UV jets in polar coronal holes