Precise astrometry of small solar system bodies

Asteroids and comets are referred to as small bodies of the solar system. Currently, almost half a million asteroids and over 3,000 comets are known, and new bodies are still being discovered.
After the discovery of the body, it is necessary to determine its trajectory, for this purpose photographs of the object are used. In each photo, the position of the object can be determined using the positions of known stars. If we have a series of positions at different times, a path can be laid through these positions. The more observations we get over a longer period of time, the more accurate the calculated path is.
Observations are coordinated by the MPC – Minor Planet Center (Small Planet Center) located in Cambridge, Massachusetts, USA. In April 2015, when we began these observations, we observed several known objects, and based on the sufficient accuracy of our positions, the MPC assigned us the observatory code K62 under which we can publish our observations.

Technical equipment of the observatory

Observations are made with the Planewave CDK17 telescope, which is located in the southeast dome on the 2EL DDF2-EQ-600 fork mount. At an aperture of f/6.8, the binoculars have a focal length of 2939 mm, which is usually shortened to 1980 mm with a 0.66× focus reducer, thus achieving an aperture of f/4.6. A CCD camera is used for imaging. We are currently able to observe small bodies up to the 20th magnitude.

Dalekohled SHOT na montáži 2EL DDF2-EQ-600.

Results

In 2017 and 2018, the observatory was renovated. Outside the reconstruction time, the program for ESA was prioritized.
Discovery image of asteroid 2016 QW, which was discovered at the Teplice observatory by astronomers Z. Moravec and R. Neuvirt on the night of August 24-25, 2016. In the image, the entire field of the CCD camera SBIG STL6306 (48ˊ×32ˊ). Image exposure 240 seconds. The planet is a very faint body completely at the limit of our detection capabilities for these bodies (around 19.5m). The coordinates of the center of the star field (J2000.0) are: right ascension 22h 15.0m, declination −03° 00ˊ.