101955 Bennu is a C-type asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous asteroid (PHA), that has an orbit semi-major axis distance of 1.1264 AU.  It is named after the Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
  101955 Bennu has a mean diameter of approximately 492 m and has been observed extensively with the Arecibo Observatory planetary radar and the Goldstone Deep Space Network.  Bennu is the target of the OSIRIS-REx mission, which arrived at Bennu on 3 December 2018.

101955 Bennu

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Asteroid (101955) Bennu Radar Shape Model V1.1

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Altimetry derived global terrain models.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Altimetry derived global tileset models.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Altimetry derived lidar tileset terrain models.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Altimetry derived lidar tileset models.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Altimetry derived touch-and-go (tag) digital terrain models

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Altimetry Document Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Data Astronomy Products Bundle - Data

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Asteroid Astronomy Documents

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Gravity Data Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived GravityDocument Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Image Processing Bundle - Global Albedo Mosaic 6.25cm

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Image Processing Bundle - Bennu Surface Color and Reflectance

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Image Processing Bundle - Global Basemap

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OTES Document

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Thermal Infrared Map Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Thermal Infrared Temperature Emissivity Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Visible Near Infrared IOF Spectra Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Visible Near Infrared Resampled Spectra Collection

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): OSIRIS-REx Derived Thermal Map Products.

We present the three-dimensional shape of near-Earth asteroid (101955) Bennu
(provisional designation 1999 RQ36) based on radar images and optical lightcurves
(Nolan et al., 2013). Bennu was observed both in 1999 at its discovery apparition,
and in 2005 using the 12.6-cm radar at the Arecibo Observatory and the 3.5-cm radar
at the Goldstone tracking station. Data obtained in both apparitions were used to
construct a shape model of this object.      
Observations were also obtained at many other wavelengths to characterize this
object, some of which were used to further constrain the shape modeling (Clark et
al., 2011; Hergenrother et al., 2013; Krugly et al., 1999).

This bundle collects the global and regional digital terrain models and associated spice data derived from the
                OSIRIS-REx Laser Altimeter (OLA) and Stereophotoclinometry (SPC) components. Several versions of the
                models are given, with models designated OLA generated from lidar data only, SPC generated from Stereophotoclinometry
                and those designated SPO generated from the combination of OLA and SPC. 

                The model designated SPOv54 is to be used for ongoing scientific analysis. Other models were used at various points
                during the mission for both operational and publication purposes. The version numbers given in this archive correspond
                to version numbers given in various OSIRIS-REx scientific publications.
                
                USE SPOv54 FOR SCIENTIFIC ANALYSIS.

                Note that in the SPC derived DTM .FITS files, there is an error in the statistics planes. 
                
                PLANE9  = 'Sigma   '                                                           
                PLANE10 = 'Quality '  
                
                SIGMA was supposed to be the standard deviation from the individual SPC maplets that went into making the DTM at that pixel.
                QUALITY was supposed to simply be the number of images that went into the SPC product at that pixel location.
                
                The values in these planes are nonsense, and should not be used. All other planes contain accurate values. 
                
                This IS NOT a problem for OLA (data_derived_lidar_* collections) derived DTM .FITS files, which have good SIGMA and QUALITY   
                planes.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Altimetry Working Group Shape Model bundle.

This collection contains Astrometry and Photometry derived data products that quantify the astrometric and photometric properties of asteroid Bennu observed as a point source by the OCAMS instruments during the Approach Phase of the mission. This includes detail the search for satellites in orbit around Bennu and, if found, characterize the satellites orbital elements and photometric properties.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Astronomy Products Bundle

This collection contains surface characterization derived data products that quantify the spectral, albedo, and morphological properties of asteroid Bennu observed by the OSIRIS-REx OCAMS instrument. This includes three complementary datasets: color reflectance products that detail multispectral analysis revealing variable surface colors and their evolution over ~100,000-year timescales from UV brightening to visible wavelength changes; global mosaic products that provide high-resolution equirectangular basemap with 5 cm ground sample distance and ~30 cm spatial accuracy; and albedo products that characterize Bennu's dark surface with median albedo of 0.046, including boulder-related variations and diagonal brightness patterns between hemispheres. Together these products provide comprehensive surface characterization from compositional variations to detailed topographic mapping. Source publications include D. N. DellaGiustina et al., Science 10.1126/science.abc3660 (2020), https://doi.org/10.1016/j.icarus.2020.113690, and https://doi.org/10.1016/j.icarus.2020.114133.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Image Processing Bundle

This bundle collects the derived thermal data products produced by the OSIRIS-REx Thermal Working Group (TAWG). Derived prodcuts include (101955) Bennu global and sample site specific thermal inertia maps, and global predicted temperature maps.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Derived Thermal Data Products Bundle

This bundle collects the OSIRIS-REx derived gravity data products produced by the mission Radio Science
                Working Group.

Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx): Radio Science Working Group Derived Gravity Bundle.

This bundle collects all the derived spectral data products produced by the OSIRIS-REx Visible and InfraRed Spectrometer (OVIRS) and the OSIRIS-REx Thermal Emission Spectrometer (OTES). These products include resampled and reflectance OVIRS spectra, and temperature/emissivity OTES data products. Additionally, both visible and near infrared (vnir) and thermal infrared (tir) map products are collected.

Title	Published	Start Date	End Date
Asteroid (101955) Bennu Radar Shape Model	2021	9/21/1999	9/21/1999

OSIRIS-REx Altimetry Shape Model bundle.	2026	9/8/2016	9/8/2016

OSIRIS-REx Derived Astronomy Products Bundle	2026	1/1/1965	1/1/1965

OSIRIS-REx Derived Image Processing Bundle	2025	1/1/1965	1/1/1965

OSIRIS-REx Derived Thermal Data Products Bundle	2023	1/1/1965	1/1/1965

OSIRIS-REx Radio Science Derived Gravity Bundle	2026	1/1/1965	1/1/1965

OSIRIS-REx Spectral Analysis Bundle	2024	9/8/2016	9/8/2016

101955 Bennu Information Page

Derived 101955 Bennu Data

Higher-order data products related to a target of observation