The mean rotation rate of Venus from 29 years of Earth-based radar observations

Campbell, Bruce A.; Campbell, Donald B.; Carter, Lynn M.; Chandler, John F.; Giorgini, Jon D.; Margot, Jean-Luc; Morgang, Gareth A.; Nolan, Michael C.; Perillat, Phillip J.; Whitten, Jennifer L.

dc.contributor.author	Campbell, Bruce A.	en
dc.contributor.author	Campbell, Donald B.	en
dc.contributor.author	Carter, Lynn M.	en
dc.contributor.author	Chandler, John F.	en
dc.contributor.author	Giorgini, Jon D.	en
dc.contributor.author	Margot, Jean-Luc	en
dc.contributor.author	Morgang, Gareth A.	en
dc.contributor.author	Nolan, Michael C.	en
dc.contributor.author	Perillat, Phillip J.	en
dc.contributor.author	Whitten, Jennifer L.	en
dc.date.accessioned	2019-08-23T02:01:00Z
dc.date.available	2019-08-23T02:01:00Z
dc.date.issued	2019
dc.identifier.citation	Campbell, Bruce A., Campbell, Donald B., Carter, Lynn M., Chandler, John F., Giorgini, Jon D., Margot, Jean-Luc, Morgang, Gareth A., Nolan, Michael C., Perillat, Phillip J., and Whitten, Jennifer L. 2019. "<a href="https://repository.si.edu/handle/10088/98622">The mean rotation rate of Venus from 29 years of Earth-based radar observations</a>." <em>Icarus</em>. 332:19–23. <a href="https://doi.org/10.1016/j.icarus.2019.06.019">https://doi.org/10.1016/j.icarus.2019.06.019</a>	en
dc.identifier.issn	0019-1035
dc.identifier.uri	https://hdl.handle.net/10088/98622
dc.description.abstract	We measured the length of the Venus sidereal day (LOD) from Earth-based radar observations collected from 1988 to 2017, using offsets in surface feature longitudes from a prediction based on a 243.0185d period derived from analysis of Magellan mission images over a 487-day interval. We derive a mean LOD over 29 years of 243.0212 +/- 0.0006d. Our result is consistent with earlier estimates (but with smaller uncertainties), including those based on offsets between Venus Express infrared mapping data and Magellan topography that suggest a mean LOD of 243.0228 +/- 0.002d over a 16-year interval. We cannot detect subtle, short-term oscillations in rate, but the derived value provides an excellent fit to observational data over a 29-year period that can be used for future landing-site planning.	en
dc.relation.ispartof	Icarus	en
dc.title	The mean rotation rate of Venus from 29 years of Earth-based radar observations	en
dc.type	Journal Article	en
dc.identifier.srbnumber	152082
dc.identifier.doi	10.1016/j.icarus.2019.06.019
rft.jtitle	Icarus
rft.volume	332
rft.spage	19
rft.epage	23
dc.description.SIUnit	NASM	en
dc.description.SIUnit	NASM-CEPS	en
dc.description.SIUnit	SAO	en
dc.citation.spage	19
dc.citation.epage	23