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

We perform a search for dormant comets, asteroidal objects of cometaryorigin, in the near-Earth asteroid (NEA) population based on dynamical andphysical considerations. Our study is based on albedos derived within theExploreNEOs program and is extended by adding data from NEOWISE and the Akariasteroid catalog. We use a statistical approach to identify asteroids on orbitsthat resemble those of short-period near-Earth comets using the Tisserandparameter with respect to Jupiter, the aphelion distance, and the minimumorbital intersection distance with respect to Jupiter. From the sample of NEAson comet-like orbits, we select those with a geometric albedo $p_V \leq 0.064$as dormant comet candidates, and find that only $\sim$50% of NEAs on comet-likeorbits also have comet-like albedos. We identify a total of 23 NEAs from oursample that are likely to be dormant short-period near-Earth comets and, basedon a de-biasing procedure applied to the cryogenic NEOWISE survey, estimateboth magnitude-limited and size-limited fractions of the NEA population thatare dormant short-period comets. We find that 0.3-3.3% of the NEA populationwith $H \leq 21$, and $9^{+2}_{-5}$% of the population with diameters $d \geq1$ km, are dormant short-period near-Earth comets.

ExploreNEOs VIII: Dormant Short-Period Comets in the Near-Earth Asteroid Population