Determining a tilt in Titan's north-south albedo asymmetry from Cassini images

Michael T. Roman; Robert A. West; Donald J. Banfield; Peter J. Gierasch; Richard K. Achterberg; Conor A. Nixon; Peter C. Thomas

doi:10.1016/j.icarus.2009.04.021

Determining a tilt in Titan's north-south albedo asymmetry from Cassini images

Michael T. Roman
, Robert A. West
, Donald J. Banfield
, Peter J. Gierasch
, Richard K. Achterberg
, Conor A. Nixon
, Peter C. Thomas

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Analysis of Titan's hemispheric brightness asymmetry from mapped Cassini images reveals an axis of symmetry that is tilted with respect to the rotational axis of the solid body. Twenty images taken from 2004 through 2007 show a mean axial offset of 3.8 ± 0.9° relative to the solid body's pole, directed 79 ± 24° to the west of the sub-solar longitude. These values are consistent with recent measurements of an implied atmospheric spin axis determined from isothermal mapping by [Achterberg, R.K., Conrath, B.J., Gierasch, P.J., Flasar, F.M., Nixon, C.A., 2008. Icarus 197, 549-555].

Original language	English
Pages (from-to)	242-249
Number of pages	8
Journal	Icarus
Volume	203
Issue number	1
DOIs	https://doi.org/10.1016/j.icarus.2009.04.021
State	Published - Sep 2009
Externally published	Yes

Keywords

Atmospheres
Titan
dynamics
structure

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10.1016/j.icarus.2009.04.021

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title = "Determining a tilt in Titan's north-south albedo asymmetry from Cassini images",

abstract = "Analysis of Titan's hemispheric brightness asymmetry from mapped Cassini images reveals an axis of symmetry that is tilted with respect to the rotational axis of the solid body. Twenty images taken from 2004 through 2007 show a mean axial offset of 3.8 ± 0.9° relative to the solid body's pole, directed 79 ± 24° to the west of the sub-solar longitude. These values are consistent with recent measurements of an implied atmospheric spin axis determined from isothermal mapping by [Achterberg, R.K., Conrath, B.J., Gierasch, P.J., Flasar, F.M., Nixon, C.A., 2008. Icarus 197, 549-555].",

keywords = "Atmospheres, Titan, dynamics, structure",

author = "Roman, \{Michael T.\} and West, \{Robert A.\} and Banfield, \{Donald J.\} and Gierasch, \{Peter J.\} and Achterberg, \{Richard K.\} and Nixon, \{Conor A.\} and Thomas, \{Peter C.\}",

year = "2009",

month = sep,

doi = "10.1016/j.icarus.2009.04.021",

language = "English",

volume = "203",

pages = "242--249",

journal = "Icarus",

issn = "0019-1035",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Determining a tilt in Titan's north-south albedo asymmetry from Cassini images

AU - Roman, Michael T.

AU - West, Robert A.

AU - Banfield, Donald J.

AU - Gierasch, Peter J.

AU - Achterberg, Richard K.

AU - Nixon, Conor A.

AU - Thomas, Peter C.

PY - 2009/9

Y1 - 2009/9

N2 - Analysis of Titan's hemispheric brightness asymmetry from mapped Cassini images reveals an axis of symmetry that is tilted with respect to the rotational axis of the solid body. Twenty images taken from 2004 through 2007 show a mean axial offset of 3.8 ± 0.9° relative to the solid body's pole, directed 79 ± 24° to the west of the sub-solar longitude. These values are consistent with recent measurements of an implied atmospheric spin axis determined from isothermal mapping by [Achterberg, R.K., Conrath, B.J., Gierasch, P.J., Flasar, F.M., Nixon, C.A., 2008. Icarus 197, 549-555].

AB - Analysis of Titan's hemispheric brightness asymmetry from mapped Cassini images reveals an axis of symmetry that is tilted with respect to the rotational axis of the solid body. Twenty images taken from 2004 through 2007 show a mean axial offset of 3.8 ± 0.9° relative to the solid body's pole, directed 79 ± 24° to the west of the sub-solar longitude. These values are consistent with recent measurements of an implied atmospheric spin axis determined from isothermal mapping by [Achterberg, R.K., Conrath, B.J., Gierasch, P.J., Flasar, F.M., Nixon, C.A., 2008. Icarus 197, 549-555].

KW - Atmospheres

KW - Titan

KW - dynamics

KW - structure

UR - https://www.scopus.com/pages/publications/68949192796

U2 - 10.1016/j.icarus.2009.04.021

DO - 10.1016/j.icarus.2009.04.021

M3 - Article

AN - SCOPUS:68949192796

SN - 0019-1035

VL - 203

SP - 242

EP - 249

JO - Icarus

JF - Icarus

IS - 1

ER -

Determining a tilt in Titan's north-south albedo asymmetry from Cassini images

Abstract

Keywords

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