Observations of minor planets
نویسندگان
چکیده
منابع مشابه
Binary Minor Planets
A review of observations and theories regarding binary asteroids and binary transNeptunian objects [collectively, binary minor planets (BMPs)] is presented. To date, these objects have been discovered using a combination of direct imaging, lightcurve analysis, and radar. They are found throughout the Solar System, and present a challenge for theorists modeling their formation in the context of ...
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We present a study of the phase effect (or photocentre offset) on the astrometry of minor planets. Analysis of the high precision Hipparcos observations of the largest asteroids shows the validity of the model. Minor planets Ceres, Pallas, Vesta and Iris show a brightness distribution close to the lunar scattering properties, while Juno and Hebe are found to be more uniformly bright objects. Fo...
متن کاملInfrared Signatures of Disrupted Minor Planets at White Dwarfs
Spitzer Space Observatory IRAC and MIPS photometric observations are presented for 20 white dwarfs with Teff . 20, 000 K and metal-contaminated photospheres. A warm circumstellar disk is detected at GD 16 and likely at PG 1457−086, while the remaining targets fail to reveal mid-infrared excess typical of dust disks, including a number of heavily polluted stars. Extending previous studies, over ...
متن کاملCCD photometry and new models of 5 minor planets
We present new R filtered CCD observations of 5 faint and moderately faint asteroids carried out between October, 1998 and January, 1999. The achieved accuracy is between 0.01–0.03 mag, depending mainly on the target brightness. The obtained sinodic periods and amplitudes: 683 Lanzia – 4. h6±0. 2, 0.13 mag; 725 Amanda – > 3. 0, ≥0.40 mag; 852 Wladilena – 4. h62±0. 01, 0.32 mag (December, 1998) ...
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INTRODUCTION Mucoceles are benign lesions associated with the pathology of the oral mucosa of minor salivary glands. Two types of cysts are distinguished depending on their pathogenesis. Most often they occur as a result of mechanical trauma and mucus extravasation into tissues or obstruction of the gland ducts. AIM The aim of the study was to present our own experiences regarding mucoceles o...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1899
ISSN: 0004-6256
DOI: 10.1086/103091