On the maximum amplitude of harmonics of an asteroid lightcurve
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00429291" target="_blank" >RIV/67985815:_____/14:00429291 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.icarus.2014.03.004" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2014.03.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2014.03.004" target="_blank" >10.1016/j.icarus.2014.03.004</a>
Alternative languages
Result language
angličtina
Original language name
On the maximum amplitude of harmonics of an asteroid lightcurve
Original language description
Most asteroid lightcurves are dominated by the second harmonic of the rotation period, caused by elongated shape. However, if the shape is not very elongate, other harmonics may dominate, leading to ambiguity of which is the true rotation period. We argue from geometry that at low phase angle, harmonics other than the second with amplitude exceeding resp. 0.4 magnitude are nearly impossible, so lightcurves with larger amplitude than that suggest a unique period dominated by the second harmonic, unless the spin is complex, non-principal axis rotation. On the other hand, lightcurves with amplitude less than 0.2?0.3 magnitudes can be dominated by other harmonics, especially the 4th and 6th, so the period may be ambiguous unless odd harmonics can be foundto identify the true rotation period. We present examples of each, low and high amplitude ambiguities.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GAP209%2F12%2F0229" target="_blank" >GAP209/12/0229: Study of non-gravitational asteroid evolution processes via photometric observations</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Icarus
ISSN
0019-1035
e-ISSN
—
Volume of the periodical
235
Issue of the periodical within the volume
June
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
55-59
UT code for WoS article
000335291600005
EID of the result in the Scopus database
—