Omega dataset available on PSA until todayB. Gondet (/MEX)MEx orbit: T = 6.5 hrs~ 100 orbits / month~ 5500 orbitsVariety of local timesOMEGA has operated over ~1300 orbits

Omega dataset available on PSA until todayB. Gondet (/MEX)Orbit number from 6 to 2526January 2004 to december 2005

Mission startLs=330End of the datasetLs=350

OMEGA dataset: 662 orbits covering one Martian year, from N mid-winter (Ls=330) to N mid-winter (Ls=350)N springN summerN fallN winterSolar conjunctionMarsis antennadeploymentmission start

Global coverage

High resolution coverage

Sun elevationi < 00 < i < 1515 < i 30Pericenter latitudeOrbit number

52 orbits over the south poleLs ()Orbits number

204 orbits over the north poleLs ()Orbits number

OMEGA scanning modes

swath widthmodealtitude 16high res.< 300 km 32medium/high res.300 km 950km 64global mapping950 km 1550 km128global mapping1550 km 4000 km

OMEGA scanning modes

swath widthmodealtitude 16high res. (~ 300m)< 300 km 32medium/high res.300 km 950km 64global mapping950 km 1550 km128global mapping (2 5 km)1550 km 4000 km

OMEGA naming conventionORBnnnn_x.QUB data cubeORBnnnn_x.NAV navigation associated

nnnn = orbit numberx = cube number (from 0 to j)

(one cube per mode but also one cube per integration time)

OMEGA baseline pointing mode

Nadir pointing (typical mode SEA > 5)with cross-track offsets

Orbit 61

Orbit 61

Orbits 600-610

Orbits 900-910

Special observationsLIMBSEPFPhobos

surface + limb ABCA-B: surface mappingB-C: atmospheric mapping < ~ 30 S/C: 3 axis stabilized

Special observations: limbs313 observations

Fixed targeted areas (point tracking, or EPF) ABC

Special observations : EPF

orbit

date

Ls ()

Longitude(E)

latitude

604

10/07/04

59.

180.

0.

1639

26/04/05

200.

165.

25N

2008

08/08/05

265.

70.

48.5S

Hellas

2139

13/09/05

286.

260.

85S

PS

2219

06/10/05

301.

84.6

74S

PS

Special observations : Phobos

orbit #distance (km)px size (m)phase angle ( )756_0149170 m62.6413_018822200 m47.2

Observations examples

spectra examples

Longitude : 354.5-354.75 Latitude : 5.55S-4.45SAlbedo (1.3m)HydratationcriterionslopecriterionAssociated spectrum

Longitude : 354.5-354.75 Latitude : 5.55S-4.45SAlbedo (1.3m)HydratationcriterionslopecriterionAssociated spectrumHRSC

Longitude : 354.5-354.75 Latitude : 5.55S-4.45SAlbedo (1.3m)HydratationcriterionslopecriterionAssociated spectraHRSC