English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A multi-colour phase-polarization curve of asteroid (3200)~Phaethon has beenobtained during the December 2017 apparition by merging measurements taken atthe observing station of Calern (France) and at the Rhozen observatory(Bulgaria). All the observations were obtained in the positive polarizationbranch, the phase angle ranging from 36$^\circ$ to 116$^\circ$. The measuredvalues of linear polarization are among the highest ever observed for a Solarsystem body. The covered interval of phase angle was not sufficiently extendedto derive a firm determination of the $P_{\rm max}$ parameter, but this appearsto occur at a phase angle around 130$^\circ$ and reaches more than 45\% oflinear polarization. Phaethon is the parent body of the Geminid meteor shower,and the real physical nature of this object (asteroid or comet) has been along-debated subject. Our polarimetric measurements seem to support theasteroid hypothesis with a phase-polarization curve similar to the asteroid(2)~Pallas, but further observations at smaller phase angles are needed to drawdefinitive conclusions.

The phase-polarization curve of asteroid (3200) Phaethon