Data Set Information
|
DATA_SET_NAME |
ROSETTA-ORBITER STEINS RPCIES 2 AST1 V1.0
|
DATA_SET_ID |
RO-A-RPCIES-2-AST1-V1.0
|
NSSDC_DATA_SET_ID |
NULL
|
DATA_SET_TERSE_DESCRIPTION |
This dataset contains EDITED RAW DATA of the asteroid Steins
encounter (AST1). Included are data taken between 11 Jul 2008 and
06 Sep 2008.
|
DATA_SET_DESCRIPTION |
Data Set Overview
=================
The following describes the nature of instrument operation
during the various periods for which IES data are available in
this submission. In all cases the data are raw electron and
ion counts as function of energy, azimuth (direction in the
instrument symmetry plane) and elevation (angle above or below
the symmetry plane).
This data set includes data obtained by IES during the period
11 July 2008 to 6 September 2008 (referred to as the Steins
flyby period by ESA for reference although instrument operation
was not continuous during this period). The period between
5 July and 1 August 2008 encompassed the active checkout PC8.
Several tests were performed on IES and although the spacecraft
was in the solar wind during this period IES was able to see
the solar wind only briefly because of the spacecraft attitude.
The actual flyby of asteroid Steins occurred at 2038 UT
spacecraft time on 5 September 2008. IES apparently saw no
signature of the asteroid nor did it see the solar wind (except
very briefly during the spacecraft 'flip' at about 1840 UT on
5 September 2008).
Processing
==========
All Rosetta Plasma Consortium (RPC) data packets are transmitted
together during downlinks with Rosetta. RPC data are retrieved
from the Data Distribution System (DDS) at European Space
Operations Centre (ESOC) to a central RPC data server at
Imperial College London. Data for IES is copied from the RPC
central data server by IESGS at Southwest Research Institute.
The pipeline processing software is the IES Ground System
(IESGS). IESGS extracts IES CCSDS packets from the RPC
collective data files stored on the RPC central data server at
Imperial College. These packets are used to build ion and
electron data products. The data products are grouped by date
and written out to PDS compliant archive data files. One data
file is created for each day. IESGS also generates the labels
for the archive data files. IES science products, archive and
label files, and limited spectrograms are available to team
scientists on the IESGS website.
Coordinate System
=================
In order to determine IES pointing, attitude data for the
Rosetta spacecraft is obtained through SPICE kernels and
converted from the J2000 coordinate system to the HGRTN
coordinate system. HGRTN is the heliocentric RTN system such
that the sun-spacecraft vector defines the positive x-axis and
the positive y-axis is the cross-product of the heliographic
polar axis and the HGRTN positive x-axis. J2000 is the inertial
frame defined by the intersection of the Earth mean equator and
the ecliptic plane at the J2000 epoch of January 1, 2000 at
noon.
The pointing for each bin of IES is thereafter determined by
multiplying the converted spacecraft attitude matrix in HGRTN
by the vector representation of each particle measurement bin.
The resulting vectors represent the flow of particles through
the respective particle measurement bins in HGRTN coordinates.
|
DATA_SET_RELEASE_DATE |
2011-03-16T00:00:00.000Z
|
START_TIME |
2008-07-11T01:27:10.654Z
|
STOP_TIME |
2008-09-06T04:55:03.554Z
|
MISSION_NAME |
INTERNATIONAL ROSETTA MISSION
|
MISSION_START_DATE |
1995-03-01T12:00:00.000Z
|
MISSION_STOP_DATE |
N/A (ongoing)
|
TARGET_NAME |
2867 STEINS
|
TARGET_TYPE |
ASTEROID
|
INSTRUMENT_HOST_ID |
RO
|
INSTRUMENT_NAME |
ROSETTA PLASMA CONSORTIUM - ION AND ELECTRON SENSOR
|
INSTRUMENT_ID |
RPCIES
|
INSTRUMENT_TYPE |
PLASMA INSTRUMENT
|
NODE_NAME |
Small Bodies
|
ARCHIVE_STATUS |
LOCALLY_ARCHIVED
|
CONFIDENCE_LEVEL_NOTE |
Confidence Level Overview
=========================
This dataset is used by the IES science team after processing.
This is done to ensure that the archived data contains good,
valid products.
Review
======
This archival data set was examined by the IES science team
prior to submission to the Planetary Data System (PDS) and was
then reviewed by PDS and the Rosetta data archive working group.
The current set is a resubmission after correcting or
responding to the various RIDs resulting from that review.
Limitations
===========
None.
|
CITATION_DESCRIPTION |
2013-07-10 SBN:T.Barnes Corrected . RECORD_TYPE = STREAM OBJECT =
DATA_SET OBJECT = DATA_SET_MISSION END_OBJECT = DATA_SET_MISSION
OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID =
BURCHETAL2007 END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT
= DATA_SET_INFORMATION DATA_SET_NAME =Trantham, B.,
ROSETTA-ORBITER STEINS RPCIES 2 AST1 V1.0,
RO-A-RPCIES-2-AST1-V1.0, NASA Planetary Data System, 2013
|
ABSTRACT_TEXT |
This dataset contains EDITED RAW DATA of the RPCIES instrument
taken during the asteroid Steins encounter (AST1). Included are
the data taken between 11 Jul 2008 and 06 Sep 2008.
|
PRODUCER_FULL_NAME |
BRAD TRANTHAM
|
SEARCH/ACCESS DATA |
SBN Comet Website
|