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. 2021 Oct 5;12:5837. doi: 10.1038/s41467-021-26071-8

Fig. 7. Least processed region on Ryugu compared with spectrally blue asteroids.

Fig. 7

Spectral comparison of the north polar region (solid blue line) with the possible parent bodies, (142) Polana, (163) Erigone, and (495) Eulalia, the B-type near-Earth asteroid (3200) Phaethon and (101955) Bennu. Spectra are normalized at 0.55 µm and offset by 0.3. Reflectance spectra of (142) Polana, (163) Erigone, (495) Eulalia, (3200) Phaethon, and (101955) Bennu were obtained by refs. 25,68,69, and ref. 32, respectively. Gray hatches for (142) Polana, (163) Erigone, and (495) Eulalia indicate 80% of the distribution of slope among their family members29,70. Gray hatch for Phaethon indicates spectral variation over one rotation31.