A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system

Robert, Vincent; Cuyper, J. P. de; Arlot, Jean-Eudes; Decker, G. de; Guibert, J.; Lainey, V.; Pascu, D.; Winter, Lars; Zacharias, N.

doi:10.1111/j.1365-2966.2011.18747.x

Cited by 30 publications

(18 citation statements)

References 14 publications

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“…We also include a new reduction of old photographic plates, obtained at USNO between the years 1974 and 1998. As part of the ESPaCE European project, the scanning and new astrometric reduction of these plates were performed recently at Royal Observatory of Belgium and IMCCE, respectively (Robert et al 2011; to be submitted). We use a weighted least squares inversion procedure and minimize the squared differences between the observed and computed positions of the satellites in order to determine the parameters of the model.…”

Section: Imcce's Approachmentioning

confidence: 99%

New constraints on Saturn's interior from Cassini astrometric data

Lainey¹,

Jacobson

Tajeddine

et al. 2017

Icarus

172

206

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Section: Imcce's Approachmentioning

confidence: 99%

New constraints on Saturn's interior from Cassini astrometric data

Lainey¹,

Jacobson

Tajeddine

et al. 2017

Icarus

172

206

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“…As part of that effort, Buie and Folkner (2015) used the DASCH (Grindlay et al 2009) and DAMIAN (Robert et al 2011) scanning systems to remeasure a collection of photographic plates of Pluto taken by Carl Lampland at Lowell Observatory from 1930 through 1951. The primary motivation for the re-analysis was to identify and correct any significant but previously unrecognized systematic errors in the historical astrometry of Pluto that might be affecting its orbit determination.…”

Section: Observational Datamentioning

confidence: 99%

Observational Constraints on Planet Nine: Astrometry of Pluto and Other Trans-Neptunian Objects

Holman¹,

Payne²

2016

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We use astrometry of Pluto and other TNOs to constrain the sky location, distance, and mass of the possible additional planet (Planet Nine ) hypothesized by . We find that over broad regions of the sky the inclusion of a massive, distant planet degrades the fits to the observations. However, in other regions, the fits are significantly improved by the addition of such a planet. Our best fits suggest a planet that is either more massive or closer than argued for by based on the orbital distribution of distant trans-neptunian objects (or by Fienga et al. (2016) based on range measured to the Cassini spacecraft). The trend to favor larger and closer perturbing planets is driven by the residuals to the astrometry of Pluto, remeasured from photographic plates using modern stellar catalogs (Buie and Folkner 2015), which show a clear trend in declination, over the course of two decades, that drive a preference for large perturbations. Although this trend may be the result of systematic errors of unknown origin in the observations, a possible resolution is that the declination trend may be due to perturbations from a body, additional to Planet Nine , that is closer to Pluto, but less massive than, Planet Nine .

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“…Nowadays, photographic plates used until the 1990s can be digitised and reduced with modern techniques and modern stellar catalogues (Robert et al 2011) as the current observations on CCD frames. In this context, old observations can have a precision equivalent to current observations.…”

Section: The Precovery Contextmentioning

confidence: 99%

Detection of Yarkovsky acceleration in the context of precovery observations and the futureGaiacatalogue

Desmars

2015

A&A

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Context. The Yarkovsky effect is a weak non-gravitational force leading to a small variation of the semi-major axis of an asteroid. Using radar measurements and astrometric observations, it is possible to measure a drift in semi-major axis through orbit determination. Aims. This paper aims to detect a reliable drift in semi-major axis of near-Earth asteroids (NEAs) from ground-based observations and to investigate the impact of precovery observations and the future Gaia catalogue in the detection of a secular drift in semi-major axis. Methods. We have developed a precise dynamical model of an asteroid's motion taking the Yarkovsky acceleration into account and allowing the fitting of the drift in semi-major axis. Using statistical methods, we investigate the quality and the robustness of the detection. Results. By filtering spurious detections with an estimated maximum drift depending on the asteroid's size, we found 46 NEAs with a reliable drift in semi-major axis in good agreement with the previous studies. The measure of the drift leads to a better orbit determination and constrains some physical parameters of these objects. Our results are in good agreement with the 1/D dependence of the drift and with the expected ratio of prograde and retrograde NEAs. We show that the uncertainty of the drift mainly depends on the length of orbital arc and in this way we highlight the importance of the precovery observations and data mining in the detection of consistent drift. Finally, we discuss the impact of Gaia catalogue in the determination of drift in semi-major axis.

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A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system

Cited by 30 publications

References 14 publications

New constraints on Saturn's interior from Cassini astrometric data

New constraints on Saturn's interior from Cassini astrometric data

Observational Constraints on Planet Nine: Astrometry of Pluto and Other Trans-Neptunian Objects

Detection of Yarkovsky acceleration in the context of precovery observations and the futureGaiacatalogue

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