The tumbling rotational state of 1I/'Oumuamua
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00494943" target="_blank" >RIV/67985815:_____/18:00494943 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1038/s41550-018-0398-z" target="_blank" >http://dx.doi.org/10.1038/s41550-018-0398-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41550-018-0398-z" target="_blank" >10.1038/s41550-018-0398-z</a>
Alternative languages
Result language
angličtina
Original language name
The tumbling rotational state of 1I/'Oumuamua
Original language description
The discovery1 of 1I/2017 U1 (1I/'Oumuamua) has provided the first glimpse of a planetesimal born in another planetary system. This interloper exhibits a variable colour within a range that is broadly consistent with local small bodies, such as the P- and D-type asteroids, Jupiter Trojans and dynamically excited Kuiper belt objects(2-7). 1I/'Oumuamua appears unusually elongated in shape, with an axial ratio exceeding 5: 1 (refs(1,4,5,8)). Rotation period estimates are inconsistent and varied, with reported values between 6.9 and 8.3 h (refs(4-6,9)). Here, we analyse all the available optical photometry data reported to date. No single rotation period can explain the exhibited brightness variations. Rather, 1I/'Oumuamua appears to be in an excited rotational state undergoing non-principal axis rotation, or tumbling. A satisfactory solution has apparent lightcurve frequencies of 0.135 and 0.126 h(-1) and implies a longest-to-shortest axis ratio of. 5: 1, although the available data are insufficient to uniquely constrain the true frequencies and shape. Assuming a body that responds to non-principal axis rotation in a similar manner to Solar System asteroids and comets, the timescale to damp 1I/'Oumuamua's tumbling is at least one billion years. 1I/'Oumuamua was probably set tumbling within its parent planetary system and will remain tumbling well after it has left ours.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA17-00774S" target="_blank" >GA17-00774S: Physical properties and evolutionary processes of sub-kilometer asteroids</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Astronomy
ISSN
2397-3366
e-ISSN
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Volume of the periodical
2
Issue of the periodical within the volume
5
Country of publishing house
GB - UNITED KINGDOM
Number of pages
4
Pages from-to
383-386
UT code for WoS article
000434351700017
EID of the result in the Scopus database
2-s2.0-85046377809