The longitude discrepancy for mutual satellite phenomena resolved

Aksnes, K.; Franklin, F. A.; Magnusson, P.

doi:10.1086/114280

Cited by 28 publications

(18 citation statements)

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“…-8. (C-O) of the observation in seconds of time; these quantities take into account a phase effect by means of the Aksnes et al (1986) method; 9. aperture of the telescope in centimeters (T = reflector; L= refractor); 10. code of the used receptor in column "Recept." (cf.…”

Section: The Datamentioning

confidence: 99%

The PHEMU03 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

Arlot¹,

Thuillot²,

Ruatti³

et al. 2008

A&A

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Context. In 2003, the Sun and the Earth passed through both the equatorial plane of Jupiter and therefore the orbital planes of its main satellites. Aims. During this period, mutual eclipses and occultations were observed and we present the data collected. Methods. Light curves of mutual eclipses and occultations were recorded by the observers of the international campaign PHEMU03 organized by the Institut de mécanique céleste, Paris, France. Results. We completed 377 observations of 118 mutual events from 42 sites and the corresponding data are presented in this paper. For each observation, information about the telescope, receptor, site, and observational conditions are provided. Conclusions. This paper gathers all data and indicates a first estimate of its precision. This catalogue of these rare events should constitute an improved basis for accurate astrometric data useful in the development of dynamical models.

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Section: The Datamentioning

confidence: 99%

The PHEMU03 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

Arlot¹,

Thuillot²,

Ruatti³

et al. 2008

A&A

View full text Add to dashboard Cite

show abstract

“…-8. (C-O) of the observation in seconds of time; these quantities take into account the phase effect (Aksnes et al 1986); 9. Aperture of the telescope in centimeters (T = reflector; L = refractor); 10.…”

Section: The Datamentioning

confidence: 99%

The PHEMU97 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

Arlot¹,

Thuillot²,

Ruatti³

et al. 2006

A&A

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In 1997 the Sun and the Earth passed through the equatorial plane of Jupiter and therefore through the orbital planes of its main satellites. During this period, mutual eclipses and occultations occurred and were observed. We investigate the precision of the catalogue to produce improved data for the development of dynamical models. Light curves of mutual eclipses and occultations were recorded by the observers of the international campaign PHEMU97 organized by the Institut de Mécanique Céleste, Paris, France. We made 275 observations of 148 mutual events from 42 sites. For each observation, information is given about the telescope, the receiver, the site and the observational conditions. This paper gathers together the data and gives a first estimate of the precision. The catalogue of these rare events represents a collection of improved accurate astrometric data useful for the development of dynamical models.

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“…This time shift and the impact parameter were derived as free parameters in the least square fit. The model also takes into account the intensity variation on the surface of the satellite due to phase effects (Aksnes et al 1986). The fitted time shift is a direct measure of the delay/advance in longitude at the time of geometric conjunction and accounts for the phase effects in case of fits using E5 and E3.…”

Section: Fit To the 1997 Data Setmentioning

confidence: 99%

Astrometry from CCD photometry of mutual events of Jovian satellites from VBO during 1997

Vasundhara

2002

A&A

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Abstract. Astrometric results of CCD observations of the mutual events of the Galilean satellites of Jupiter from the Vainu Bappu Observatory are presented. The shifts in the photo-centers on the disks of Io and Europa due to albedo variations inferred from the available mosaics of Galileo imagery are determined. The estimated shifts from ≈90 km East to ≈50 km West on Io and from ≈50 km East to ≈30 km West for Europa during one orbital period are comparable to the accuracies provided by the present-day ephemerides. In a given mutual event series, the mutual events involving a given satellite pair dominate in number and occur nearly at the same orbital longitude within ±20• ; all the events are therefore delayed or all of them advanced depending on the direction of the shift of the photo-center. The implications of including these cumulative and sustained longitude residuals on the constructed ephemerides are discussed.

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The longitude discrepancy for mutual satellite phenomena resolved

Cited by 28 publications

References 0 publications

The PHEMU03 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

The PHEMU03 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

The PHEMU97 catalogue of observations of the mutual phenomena of the Galilean satellites of Jupiter

Astrometry from CCD photometry of mutual events of Jovian satellites from VBO during 1997

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