Radar observations of Near-Earth Objects
Radar astronomy is one of the most effective techniques for determining the physical properties of near-Earth objects (NEOs). The size, shape, spin period and surface properties of NEOs can be obtained using radar observations. Radar observations require both transmitting and receiving antenna systems with highly sensitive equipment for recording echoes, as well as software for preparing observations and processing the data. Since 2015, the Institute of Applied Astronomy in cooperation with the Jet Propulsion Laboratory and Goldstone Deep Space Communications Complex conduct intercontinental bistatic radar observations of NEOs using 70-m antenna (DSS-14) to transmit and 32-m radio telescopes (RT-32) of “Quasar” VLBI network in Svetloe, Zelenchukskaya and Badary observatories to receive the echoes.
Parameters of NEOs detected at RT-32
|NEO||Epoch of observation||
|2003 SD220||2018 Dec 17||800||287.0||0.050||0.3||25||34|
|2017 VR12||2018 Mar 05||138||1.4||0.012||10||12||6|
|3200 Phaethon||2017 Dec 17||5100||3.6||0.069||140||69||3|
|3122 Florence||2017 Sep 04||4500||2.4||0.052||187||52||13|
|2003 BD44||2017 Apr 19||1400||80.0||0.057||5||57||8|
|2014 JO25||2017 Apr 18||650||4.5||0.024||14||24||14|
|2003 YT1||2016 Oct 31||1100||2.3||0.035||47||35||8|
|2003 TL4||2016 Oct 29||380||27.2||0.029||2||28||11|
|2011 UW158||2015 Jul 18||320||0.6||0.017||52||16||8|
List of Publications
We thank L. A. Benner, S. Naidu, M. Brozovic and the technical staff at Goldstone for the help with the radar observations. This work was supported by the Russian Scientific Foundation grant No. 16-12-00071.