Centaur Nessus Ephemeris: 1900-2050

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Other new features have been added, the most obvious of which are the dwarf planets Ceres and Eris, in response to the 2006 decisions of the International Astronomical Union.

Using NIMA, we succeed in predicting the stellar occultations of 10 TNOs and 3 Centaurs between July 2013 and February 2015.If individual observed positions have a weight ϵ i, the mean weight for the set of positions is , where N is the number of positions per night. Columns (4) and (5): standard deviation from the measurements used to determine the values in columns (2) and (3), respectively. Although Makemake's size (1,420 ± 60 km) and albedo are roughly known, there has been no constraint on its density and there were expectations that it could have a Pluto-like atmosphere. Focused on potentially hazardous asteroids (PHAs), which are near-Earth asteroids (NEAs) making very close encounters with the Earth, this paper aims to emphasize the value of old photographic plate observations.

Note that the total number of filters in each row of column (11) is always less than or equal to the respective number of positions in column (8). We determined the physical properties of the 2011 secondary events around Chiron, which may then be directly compared with those of Chariklo rings, as the same method was used. To overcome this problem, we adopt a specific weighting scheme, by taking the estimated precision of each position into account, depending on which observatory and stellar catalogue are used, as well as any possible bias due to the observatory. Here we present a positive detection of material surrounding Chiron from the 74-inch telescope for this event. The prediction of stellar occultations by trans-Neptunian objects (TNOs) and Centaurs is a difficult challenge that requires accuracy both in the occulted star position and in the object ephemeris.As a result from this process, misidentifications of TNOs and Centaurs from the images were reduced to a minimum, although real outliers can still be found mostly among the doubtful sources. I imaged it tonight (Jan 9) and it is currently around mag 17 and around 5 arcmin south of the predicted position. He worked for example several years as Head of SEO at an performance marketing agency at Munich and from time to time also as a lecturer for online marketing. This is an invaluable data set to studies in several fields of astronomy (see Dark Energy Survey Collaboration et al.

Generates some traditional spreads with randomly chosen cards, or you can use the card picker to pick your own.We highlight novelties developed by us and never reported before in the literature, which significantly enhance astrometry precision and automation. This means that the low detection threshold adopted by the PRAIA software to extract the faintest sources did not compromise the quality of the results. The work leading to these results has received funding from the National Institute of Science and Technology of the e-Universe project (INCT do e-Universo, CNPq grant 465376/2014-2). The basic results provided here (astrometry, orbits, and predictions to TNOs and Centaurs) are constantly updated as more observations from the DES or from other telescopes become available, the LSST being a natural continuation of this work. Deep sky surveys like the DES also play a relevant role to improve the determination of these distances by providing observations at different phase angles.

From C1, instrumental solutions are believed accurate to smaller than 3 mas rms per coordinate (see Bernstein et al. Using the first multi-chord stellar occultation by (2060) Chiron and considering it to have a Jacobi equilibrium shape, we derived its 3D shape, implying a density of 1119 ± 4 kg m ⁻³ . With the years 1950 through 2050, only one ephemeris needs to be at hand, especially when traveling, for an astrologer to do quick lookups of both birth data and transiting data over the expected life span of most people currently living. Finally, we show that the astrometric positions given by positive occultations can help to refine the orbit of the TNO and, consequently, the future predictions. The presence of distortion effects, also known as the field distortion pattern (FDP), are expected in detectors with large FOVs such as that of the DECam.Using astrometry from me (970), Peter Birtwhistle (J95) and Patrick Wiggins (718) obtained since the propellant leak stopped I get a nice fit (3-day arc, 0″. CE110001020, and the Brazilian Instituto Nacional de Ciência e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2).