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| NEAR Data Archive |
Documentation for a particular instrument or set of data (including calibration papers and observing logs) are normally found on the root level of the volume. Go to the root level of the volume and look for the "DOCUMENT" directory. The root level of the volume also contains an "AAREADME.TXT" file which describes the contents of volume.
Go to the complete documetation set for the NEAR Data Archive.
Uncalibrated data, referred to as "level 1b" data in the NEAR nomenclature, are found in the lower-numbered volumes. Raw data are located on volumes in which the last four digits begin with a zero (0). Go to the root level of the volume and look for the "DATA" directory.
Calibrated data, referred to as "level 2" data in the NEAR nomenclature, are found in the higher numbered volumes. Volume names in which the last four digits begin with a two (2) contain calibrated data. Go to the root level of the volume and look for the "DATA" directory. For NLR volumes containing Eros orbital data, "NLEROS_2001" to "NLEROS_2005", go the root level of the volume and look for the "LEVEL2" directory.
Calibration files can be tabular data, images, or spetra and can be taken in the lab or in flight. Calibration files are normally located on the same volume as the calibrated data files, but in a separate directory. Go to the root level of the volume and look for the "CALIB" subdirectory. The "CALINFO.TXT" file in that directory will provide further details about the calibration file organization.
Browsers are normally located on the same volume as the calibrated data files, but in a separate directory. Go to the root level of the volume and look for the "BROWSE" subdirectory. The "BROWINFO.TXT" file in that directory will provide further details about the browsers.
We provide the following links to browsers:
Eros coverage maps are normally located in the "BROWSE" directory on the higher level volumes in which the last four digits begin with two (2) or four (4). Go to the root level of the volume and look for the "BROWSE" subdirectory.
We provide the following links to Eros coverage maps:
Eros shape models are normally located in the "DATA" or "BROWSE" directories on the higher level volumes in which the last four digits begin with four (4). Go to the root level of the volume and look for the "DATA" or "BROWSE" directories.
The Eros shape models produced by the NLR team are located on the "NLEROS_2001" volume in the "BROWSE/LEVEL3" and "LEVEL3" directories. The preliminary Eros shape models produced by the Radio Science team are located in the "EROSHAPE" directory on the "NREROS_2001" volume. The shape models produced by the MSI team are located in the "DATA" directory on the "NIEROS_4001" volume.
We provide the following links to the Eros shape models:
Eros gravity models do not have a consistent location across data volumes. The preliminary gravity models produced by the NLR team are located in the "LEVEL3/SHA" directory on the "NLEROS_2001". The models are in tabular format and contain coefficients and related data for a spherical harmonic model of the gravity potential of Eros complete to degree and order 16.
The gravity model produced by the Radio Science team is located in the "EROSGRAV" directory on the "NREROS_2001" volume. The models are in tabular format. The tables contain coefficients and related data for a spherical harmonic model of the gravity potential of Eros. One model is complete to degree and order 15 while another model is truncated at 8 degrees due to noise.
We provide the following links to the Eros gravity models:
Eros surface images and maps do not have a consistent location across data volumes. NLR daily topological data are located in the "LEVLE2/TOPO" directory on the "NLEROS_2001" to "NLEROS_2005" volumes. MSI hand-laid mosaics are located in the "BROWSE" directory on the "NIEROS_4001" volume. MSI basemaps are located in the "BASEMAPS" directory on the "NIEROS_4002" volume.
We provide the following links to the Eros surface images and maps:
Representative gamma-ray spectra are located in the "DATA" directory on the "NXERSF_2001" volume. Summary gamma-ray spectra are located in the "DATA" directory on the "NXERSF_2002" volume. Eros abundance estimates are described in the "DOCUMENT" directory on the "NXERSF_2002" volume. The on-surface calibrations are described in the "DOCUMENT" directory on the "NXERSF_2001" volume.
We provide the following links to the Eros surface images and maps:
X-Ray spectral data of EROS, acquired during solar flares, are located in the "DATA" directory on the "NXEROS_2012" directory. All other spectral x-ray data are located in the "DATA" directory on volumes beginning with "NXEROS_20".
We provide the following links to the Eros surface images and maps:
The NEAR spacecraft flew by asteriod 433 Mathilde on June 25-27, 1997. The Multi-Spectral Imager (MSI) and the Radio Science (RS) instruments acquired data during the flyby of Mathilde.
An incomplete numerical shape model, a list of images used to create the shape model, and an image mosaic of Mathilde exist in the PDS/SBN Asteroids archival area, /SBNast/holdings/NEAR-A-5-COLLECTED-MODELS-V1.0.html (look for references to Mathilde). The numerical shape model consists of tabular ASCII data with grid points every 3 degrees in longitude and latitude. The model was derived from MSI images taken during the Mathilde flyby on June 27, 1997. The numerical shape model is incomplete because several data columns are missing. The image mosaic of Mathilde is FITS image constructed from MSI images taken during the June 1997 flyby and at a distance of 1209 to 7477 kilometers.
In the NEAR Data Archive, visual images of Mathilde taken by the MSI instrument are located on volumes beginning with "NIMATH_". Uncalibrated MSI images are located in the "DATA" directory on the "NIMATH_0002" volume. Calibrated MSI images are located in the "DATA" directory on the "NIMATH_2002" volume. MSI calibration files such as the filter bandpasses, flat fields, and point-spread functions are located in the "CALIB" directory on the "NIMATH_2001" volume.
In the NEAR Data Archive, Mathilde data taken by Radio Science are located in the "MATHFB" directory on the volume "NREROS_2001". Uncalibrated and calibrated data are included in this single directory.
We provide the following links to Mathilde data in the NEAR Data Archive:
The MSI instrument acquired visual images of comet C/Hyakutake (1996 B2) on March 23, 1996, from 14:50:19.1 to 15:44:41.1 UTC, equivalent to mission elasped times 3089211 and 3092473, respectively. Uncalibrated images are located in the "DATA/1996/084/RAW/" directory on the "NICRUZ_0002" volume. Calibrated images are located in the "DATA/1996/084/RAD/" directory on the "NICRUZ_2002" volume. Look for file names "M0003089211F0_2P*" through "M0003092472F0_2P*".
Last updated: 30 January 2005, (ACR) for new archive locations