Results 11 to 20 of about 6,728 (225)
Astrometry test of MSCRED IRAF software package [PDF]
Serbian Astronomical Journal, 2005 Astrometric properties of images obtained using MSCRED IRAF software package are investigated. CCD observations of M35 open cluster were taken in an observation run between October 10 and 17, 2004 at Belogradchick Observatory (Bulgaria) using the 60cm ...
Popescu R. +3 more
doaj +1 more source
Orientations of orbital planes of binaries [PDF]
Serbian Astronomical Journal, 2004 Orientations of orbital planes of binaries are analyzed by using a complete sample of known orbital systems. The use of a so large sample is possible due to the application of a new procedure enabling to include the binaries for which the ascending nodes
Popović Georgije M. +2 more
doaj +1 more source
, 2023 PRAIA - Package for the Reduction of Astronomical Images Automatically - is a suite of astrometric and photometric tasks designed to cope with huge amounts of heterogeneous observations with fast processing, no human intervention, minimum parametrization
Assafin, M.
core +1 more source
Astrometry in the Future [PDF]
CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY, 1997 AbstractThe introduction of the extragalactic reference frame and the availability of the Hipparcos and Tycho catalogs will have major impacts on changing the accuracy levels of astrometry in the future.There is a need for accurate densification of the reference frames down to at least 20thmagnitude.
openaire +1 more source
Cassini ISS astrometry of the Saturnian satellites: Tethys, Dione, Rhea, Iapetus, and Phoebe 2004-2012 [PDF]
, 2015 This work was mainly funded by European Community’s Seventh Framework Program (FP7/2007-2013) under grant agreement 263466 for the FP7-ESPaCE, and partially by UPMC-EMERGENCE (contract number EME0911), for which R.T. and V.L. are grateful. R.T.
Lainey, V. +11 more
core +1 more source
Relativity in Astrometry [PDF]
Symposium - International Astronomical Union, 1986 The coordinate dependence of the definition of light deflexion is discussed and the concepts of “natural” and “proper” reference frame are introduced in order to derive astrometric observables from coordinate quantities. Confusion in published formulations of VLBI data analysis is discussed in the context of the IAU definition of the coordinate time ...
openaire +1 more source
The history of astrometry [PDF]
The European Physical Journal H, 2012 The history of astrometry, the branch of astronomy dealing with the positions of celestial objects, is a lengthy and complex chronicle, having its origins in the earliest records of astronomical observations more than two thousand years ago, and extending to the high accuracy observations being made from space today.
openaire +2 more sources
Observational data and orbits of the asteroids discovered at the Baldone Observatory in 2015–2018
Open Astronomy, 2020 This paper is devoted to the discovery of 37 asteroids at the Baldone Astrophysical Observatory (MPC 069) from 2015 to 2018, and one of dynamically interesting Mars-crosser (MC) observed at the Baldone Astrophysical Observatory, namely 2008 LX16.
Wlodarczyk Ireneusz +2 more
doaj +1 more source
Aerospace, 2022 Space Surveillance and Tracking is a task that requires the development of systems that can accurately discriminate between natural and man-made objects that orbit around Earth.
Florin Dumitrescu +4 more
doaj +1 more source
SST Anywhere—A Portable Solution for Wide Field Low Earth Orbit Surveillance
Remote Sensing, 2022 The low-Earth orbit (LEO) is filled with active satellites, but also with space debris, which need constant observation. The orbiting objects may be affected by collisions or by atmospheric drag, and therefore they can change their orbit or even fall to ...
Radu Gabriel Danescu +4 more
doaj +1 more source