... Figure 8: Can you detect the motion of the near-Earth asteroid 2000PH against the background stars during its close approach to Earth around 27 July 2004? ... Down) observed and imaged the unusual near-Earth asteroid 2000PH during its close approach to the Earth around 27 July 2004. The observations were carried out remotely using the new 2m aperture Faulkes telescope situated on the 10,000-foot summit of Haleakala, on the island of Maui in Hawaii. ...

... 8, ``Celestial Mechanics'', 2002 Estimation of masses of some minor planets from observations of perturbed bodies O. M. Kochetova Institute of Applied Astronomy, St. Petersburg, Russia The most straightforward method of mass determination of minor planets is the dynamical one which uses the gravitational perturbations produced by minor planet in the motion of other bodies. ... The values of the masses of minor planets (15), (29) and (65) appear to be rather close in both papers. ...

WFPC2 . Images: version1 , version2 . Catalogs: Version 1 HDF-S , HDF-N ;Version 2 HDF-S . STIS . ... NICMOS . Images: Camera 3 , V2 of psf-convolved STIS 50CCD on NICMOS . ... Images: WFPC2 FF , STIS FF ; Version2: WFPC2 FF , STIS FF , NICMOS FF . Catalogs: Version2 WFPC2 FF , STIS FF , NICMOS FF . ... Check the instrument specific technical pages for a description of the data products and the implemented data reduction steps: STIS , WFPC2 , NICMOS , Flanking Fields . ...

... 24-Sep-14 JOURNиES 2014 Investigation · checking possibility of nutation rates estimation based on RLG observations simulation level · combination of simulated RLG data with real VLBI data · comparison of estimates based on real RLG data (Wettzell) with results of simulation 24-Sep-14 JOURNиES 2014 Simulation ... 10-8) 24-Sep-14 JOURNиES 2014 Simulated data + VLBI (ac. lev. ...

... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...

... R2097 Date Received: 2005-May-04 11:33:32 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 12 Hours Radar Observations of asteroids 2005 ED318 Near-Earth asteroid 2005 ED318 approaches to within .016 AU of the Earth in May 2005. This 350-m "Potentially Hazardous" ob ject presents a high-resolution (7.5-m) imaging opp ortunity (the highest SNR opp ortunity this year). ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... Credit: NEAR Project , Galileo Project , NASA Explanation: No asteroid or comet is known to be on a collision course with Earth. ... Orbital computations using new observations suggested that it would pass within 30,000 miles of the Earth's center on October 26, 2028 - a very near miss considering that the radius of the Earth itself is about 4,000 miles. ... Publications with keywords: Gaspra - Ida - Mathilde - NEAR project - asteroid . ... Asteroid and Galaxy . ... Ida and Dactyl: Asteroid and Moon...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

Next: Some theory Up: userhtml Previous: Calibration . By many measures, the ATCA 3-mm observing band is a completely different domain to the other ATCA bands. ... Not surprisingly many aspects of the data reduction are also different. This chapter reviews the theory behind some of the differences, and then considers a practical approach to calibration. ... Antenna gain considerations and flux calibration . Instrumental phase . Atmospheric phase and phase calibration considerations . ...

Next: Determination of the stellar Up: Results. ... Their values taken from Lipunov (1992) are shown in table 1. ... For Vela X-1 and Her X-1 values of magnetic field, B , coincides with the values that we used when radii of NS's are and correspondently. ... Characteristic time for the wind-accreting systems can be determined from the equation: . ... These velocities are close to obtained using estimates of the 'diffusion coefficient'. These characteristic time scales are also shown in table 3. ...

... Old World First Asteroid Radar Echo. ... It testifies that 4179 Toutatis is a double object like asteroid 4769 Castalia. ... Interference of Radar Echo from the Binary Asteroid 4179 Toutatis. ... An analysis of the 6-cm radar data revealed quasi-harmonic oscillation of the echo’s “central” Doppler frequency with a period of about 14 sec and a deviation of about (0.7*B) Hz, where B is the echo bandwidth, which for 4179 Toutatis was equal to 2.1 Hz and 1.9 Hz for 1992 Dec 8 and 9, respectively. ...

Next: Preliminaries Up: PEPSYS general photometry Previous: Getting the observations . Preliminaries . ... Subtraction of dark and sky measurements . Sky models . Using the sky model . ... Extinction and transformation models . The bias problem . ... Individual data . Logfile output . Table file output . Interpreting the output . Special problems . ... Special systems . ... Sky problems . CCD data . Problems with star names . ... Mon Jan 22 15:08:15 MET 1996 ...

The Wind spacecraft. ... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... For additional details and updates, see the home page of the "Wind" mission. Exploration" home page (index) Glossary . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Asteroid . ... Site . ... The evening of October 26, 2011, Mark Trueblood, Robert Crawford, and Larry Lebofsky used the Kitt Peak 2.1-m telescope to observe Near Earth Asteroid (NEA) 2008 QT3. ... single still jpeg frame . ... The National Optical Astronomy Observatory (NOAO) issued a press release concerning Morgan's work on Monday, November 21, 2011 and posted it on the home page of their web site . ... 2013 Winer Observatory. ...

... PLANETARY AND SPACE SCIENCE. ... Observations of double stars at Pulkovo with 65 cm Zeiss refractor. ... 2008. Observations of double stars at Pulkovo at 65 cm Zeiss refractor .V56. ... The astrometric observations of planetary satellites, close approaches and occultations of stars by asteroides and mutual events in the systems of planetary satellites with the 26-inch refractor of Pulkovo observatory in 1995-2006. Observations of double stars at Pulkovo at 65 cm Zeiss refractor . ...

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

... Prof. G.A. Mikhailov, corr.-member of the Russian Academy of Science . ... Prof. B.A. Kargin . ... Marchuk G.I., Mikhailov G.A., Kargin B.A. et al. 1980) The Monte Carlo Methods in Atmospheric Optics. ... Mikhailov G.A. (1992) Optimization of Weighted Monte Carlo Methods. ... Mikhailov G.A. (1998) New approach to constructing and substantiating weight "path estimates" in Monte Carlo method. ... Optics of Atmosphere and Ocean , v.12, p.238-245. ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...