SIMBAD references

2022MNRAS.516L..53G - Mon. Not. R. Astron. Soc., 516, L53-L57 (2022/October-2)

(3200) Phaethon polarimetry in the negative branch: new evidence for the anhydrous nature of the DESTINY+ target asteroid.

GEEM J., ISHIGURO M., TAKAHASHI J., AKITAYA H., KAWABATA K.S., NAKAOKA T., IMAZAWA R., MORI F., JIN S., BACH Y.P., JO H., KURODA D., HASEGAWA S., YOSHIDA F., ISHIBASHI K., SEKIGUCHI T., BENIYAMA J., ARAI T., IKEDA Y., SHINNAKA Y., GRANVIK M., SILTALA L., DJUPVIK A.A., KASIKOV A., PINTER V. and KNUDSTRUP E.

Abstract (from CDS):

We report on the first polarimetric study of (3200) Phaethon, the target of JAXA's DESTINY+ mission, in the negative branch to ensure its anhydrous nature and to derive an accurate geometric albedo. We conducted observations at low phase angles (Sun-target-observer angle, α = 8.8-32.4°) from 2021 October to 2022 January and found that Phaethon has a minimum polarization degree Pmin = -1.3 ± 0.1 per cent, a polarimetric slope h = 0.22 ± 0.02 per cent deg–1, and an inversion angle α0 = 19.9 ± 0.3°. The derived geometric albedo is pV = 0.11 (in the range of 0.08-0.13). These polarimetric properties are consistent with anhydrous chondrites, contradict hydrous chondrites, and typical cometary nuclei.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): techniques: polarimetric - minor planets, asteroids: individual: (3200) Phaethon

CDS comments: BD +2 3739 is a probable misprint for BD +32 3739 (unpolarized star).

Simbad objects: 11

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