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Near Earth Asteroid Rendezvous (NEAR) Data Archive

Main target bodies: Asteroids (253) Mathilde and (433) Eros
Launch date: 17 February 1996
Mathilde flyby date: 27 June 1997
Eros orbit operations: Feb. 2000 through February 2001

Browse and search the PDS NEAR Eros image archive using the Small Bodies Image Browser.

NEAR primary instrument data:

Data type Browse/Download Description
Images Multi-Spectral Imager (MSI) A 537x244 pixel CCD camera with eight filters covering the spectral range from 0.4 to 1.1 microns
Spectra Near-Infrared Spectrometer (NIS) A grating infrared spectrometer with a 32-element Ge array covering the spectral range 1348-2732 nm.
Nuclear Gamma-Ray Spectrometer (GRS) Detects characteristic gamma rays in the 0.3 to 10 MeV range that are emitted from specific elements in the surface.
X-Ray Spectrometer (XRS) An X-ray fluorescence spectrometer that detects characteristic X-ray line emissions excited by solar X-rays from elements in the asteroid's surface.
Magnetometer NEAR Magnetometer (MAG) A fluxgate magnetometer using ring core sensors made of highly magnetically permeable materal to detect and map the intrinsic magnetic fields of Eros.
Dust N/A No dust detector instrument on NEAR
Altimetry NEAR Laser Rangefinder (NLR) A laser altimeter using a Cr-Nd-YAG solid-state laser and a compact reflecting telescope to measure distance from the spacecraft to the surface.
Ancillary Radio Science Subsystem (RSS) Accurate doppler measurements of the spacecraft's radial velocity with respect to Earth allow the mapping of the gravity field. Both raw data and gravity maps are available.
NEAR SPICE archive Archived at NAIF

Derived data:

Data type Browse/Download Description
Images Eros MSI images with Geometry Backplanes MSI Eros image set with geometric and gravitational backplanes
Models Gaskell Eros Shape Model Most accurate shape model available for Eros, provided in a range of resolutions
NEAR Mission-produced Models Includes team-produced shape and gravity models of both Eros and Mathilde

Additional Resources:

For questions about the data sets or this web site, contact Carol Neese (neese@psi.edu).

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