We acquired μFTIR spectra for single (≤1–2 mm) particles of each type as well as BDR, FTIR, and μFTIR data of handpicked groups of particles of each type to characterize their spectral properties.

Biconical VNIR reflectance spectral data of bulk and residual fine samples of OREX-800029-0 aggregate of asteroid Bennu were measured using Thermo Nexus 870 FTIR spectrometer with PIKE biconical diffuse reflectance accessory having a gold-coated mirror.

Jan 3, 2024 · OSIRIS-REx spectra of Bennu from 0.4 – 100 µm [e.g., 1, 2] confirmed that Bennu has a short wavelength blue slope, shows a phyllosilicate-dominated global average spectrum, and exhibits fundamental features of magnetite. In addition, carbonates were identified [e.g., 3], and limits on anhydrous mineral abundances were

Jan 29, 2025 · Studies of rock and dust from asteroid Bennu delivered to Earth by NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification and Security–Regolith Explorer) spacecraft have revealed molecules that, on our planet, are key to life, as well as a history of saltwater that could have served as the “broth” for these ...

Bennu, by contrast, has distinct emissivity minima close to 10.3 and 23 μm similar to those found in hydrated meteorites. Its overall spectral con-trast is also very low compared with that of main-belt C-complex asteroids. Bennu itself was observed with the Spitzer IRS in 2007 [4].

This study aims to investigate the compositional connection between asteroid Polana and Bennu, to determine if Bennu originated from the New Polana family parented by asteroid Polana or if the interior of the original parent body was heterogeneous.

The NASA Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission has obtained thousands of spectra of asteroid (101955) Bennu with the OSIRIS-REx Visible and InfraRed Spectrometer.

Oct 16, 2020 · Bennu is a carbonaceous asteroid that hasn’t undergone drastic, composition-altering change, meaning that on and below its deeper-than-pitch-black surface are chemicals and rocks from the birth of the solar system.

transform infrared (FTIR) reflectance spectra were measured on the same spots with a smaller diameter (of about 4 mm) using a Thermo Nexus 870 spectrometer over wavelengths starting at ~1 µm. The FTIR spectra were scaled and connected at 2.5 µm to the VNIR spectra at the standard viewing geometry.

Sep 15, 2024 · We showed that the global spectrum of Bennu is significantly brighter by 18.0 ± 1.5% at v band and bluer by 0.18 ± 0.03 μm −1 in the b-to-x band range than Ryugu. The asteroid-to-asteroid difference is larger than the latitudinal variation within each asteroid.