Data Set Information
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| DATA_SET_NAME |
ROSETTA-ORBITER 67P NAVCAM 2 COMET ESCORT 2 MTP014 V1.0
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| DATA_SET_ID |
RO-C-NAVCAM-2-ESC2-MTP014-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
:Data Set Overview::The data from the Rosetta Navigation Camera (NavCam) was extracted byBernhard Geiger; the data set was constructed and submitted by MaudBarthelemy on behalf of the Planetary Science Archives (PSA).The data have been observed and measured from 10th March 2015 to 8thApr 2015. The frequency of the navigation slots was of one 2x2 rasterevery five hours, with interruption by manoeuvres. This gave 512navigation images. In addition, 53 context images have been taken and2 calibration images. This makes a total of 567 images.After the safe mode at 2015-03-29T12:15 a series of 7 planned rasters(28 images) was not executed. 4 navigation images were taken with lostrows at 2015-03-29T05 (large antenna off-pointing due to star trackerproblems and gyro drift).5 context images at the beginning of the MTP were not acquired due toa too late file submission, 4 additional ones were taken withdifferent properties for that reason. 74 NCIR images were not executedafter the safe mode at 2015-03-29T12:15 until the end of the MTP.There were no context images with lost rows.The orbiter was executing far fly-by arcs with distances between 70 kmand 100km This fly-by was followed by a close fly by at 13:00 on 28thMarch 2015 at 15km from the comet centre and 40 degrees phase angle.The spacecraft went to Safe Mode on 29th March due to severe StarTracker issues. The spacecraft was sent to 400km. On 8th April, itwent back to 140km.All images in this data set are raw and uncalibrated data taken usingthe imaging mode. The data set contains images resolved using bothNavCams onboard the Rosetta S/C and the DATA directory is organisedto reflect this with two sub directories: - CAM1 - CAM2CAM2 directory is only present if CAM2 observations are done.After hibernation exit CAM2 was only switched on to confirm its healthstatus in a check-out. During the comet escort phase CAM2 will only beused in the case of a failure of the nominal camera CAM1.For each image, the user can also find the FITS format of theobservation.:Filename Convention::The filenaming convention for all data levels is given by: __. ROS CAM1 YYYYMMDDThhmmss IMG CAM2 LBL (JPG)Examples: ROS_CAM1_20140223T081016.IMG ROS_CAM1_20140223T081016.LBL ROS_CAM1_20140223T081016F.FIT ROS_CAM1_20140223T081016F.LBL (ROS_CAM1_20140223T081016.JPG) ROS_CAM2_20140223T094017.IMG ROS_CAM2_20140223T094017.LBL ROS_CAM2_20140223T094017F.FIT ROS_CAM2_20140223T094017F.LBL (ROS_CAM2_20140223T094017.JPG)(In the case of the BROWSE directory):Geometry Information - Coordinate System::The label files include the following geometric variables:- SC SUN POSITION VECTOR: The vector from the spacecraft to the Sun in equatorial J2000 inertial frame.- SC TARGET POSITION VECTOR: The vector from the spacecraft to the centre of the comet nucleus in equatorial J2000 inertial frame.- SC TARGET VELOCITY VECTOR: The spacecraft to comet nucleus velocity vector in in equatorial J2000 inertial frame.- TARGET CENTER DISTANCE: The distance between the spacecraft and the comet nucleus centre. (Note that also for checkout and stellar calibration images the comet nucleus distance is given here.)- SUB SPACECRAFT LATITUDE and SUB SPACECRAFT LONGITUDE: The latitudeand longitude of the sub-spacecraft point derived from the FlightDynamics body-fixed reference frame implicitly specified by theinformation provided in the comet attitude file CATT.- RIGHT ASCENSION and DECLINATION: Right Ascension and Declination ofthe camera boresight direction in equatorial J2000 inertial frame.- CELESTIAL NORTH CLOCK ANGLE: The direction of celestial north at the center of the image - measured from the upward direction, clockwise to the direction toward celestial north.- SOLAR ELONGATION: The angle between the line of sight of observation and the direction of the Sun.All geometric values are calculated for the time t : IMAGE TIME(and not START TIME).:
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| DATA_SET_RELEASE_DATE |
2015-10-31T00:00:00.000Z
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| START_TIME |
2015-03-10T11:25:00.000Z
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| STOP_TIME |
2015-04-08T11:25:00.000Z
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| MISSION_NAME |
INTERNATIONAL ROSETTA MISSION
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| MISSION_START_DATE |
1995-03-01T12:00:00.000Z
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| MISSION_STOP_DATE |
N/A (ongoing)
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| TARGET_NAME |
CALIBRATION
67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)
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| TARGET_TYPE |
CALIBRATION
COMET
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| INSTRUMENT_HOST_ID |
RO
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| INSTRUMENT_NAME |
NAVIGATION CAMERA
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| INSTRUMENT_ID |
NAVCAM
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| INSTRUMENT_TYPE |
CCD CAMERA
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| NODE_NAME |
Small Bodies
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| ARCHIVE_STATUS |
IN LIEN RESOLUTION
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| CONFIDENCE_LEVEL_NOTE |
All data have been validated by ESA and found as expected. Any exceptions are noted by the DATA_QUALITY field in the label files.
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| CITATION_DESCRIPTION |
Geiger, B. and M. Barthelemy, ROSETTA ORBITER NAVCAM ESC2-MTP014, RO-C-NAVCAM-2-ESC2-MTP014-V1.0, ESA Planetary Science Archive and NASA Planetary Data System, 2015.
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| ABSTRACT_TEXT |
This dataset contains ROSETTA NAVCAM RAW DATA of the Escort Phase 2 from 10th Mar 2015 to 8th Apr 2015 when at the vicinity of target 67P/CG.
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| PRODUCER_FULL_NAME |
BERNHARD GEIGER
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| SEARCH/ACCESS DATA |
SBN Comet Website
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