1. Agricultural University of Athens, Lab of Ecology and Environmental Sciences, 75 Iera Odos Str., TK 11855, Athens, Greece;2. Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China;1. Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamilnadu, India;2. Department of Physics, Anna University Regional Campus, Tirunelveli, India;3. Green Processing, Bioremediation and Alternative Energies Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, PR China;1. Institute of New Energy and Low-Carbon Technology & Healthy Food Evaluation Research Center, Sichuan University, Chengdu, Sichuan, 610065, China;2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, China;3. Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY, 14642, United States;4. Center for Air Resources Engineering and Science, Clarkson University, Potsdam, NY, 13699, United States;5. Department of Civil Engineering, Texas A&M University, College Station, TX, 77843, United States;6. Department of Environment, College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610065, China
Abstract:
The definitive orbit of Ariel 2 (1964-15A) has been computed from Minitrack observations. The orbit is described by a model with eight orbital parameters determined by differential correction. From observations accurate to about 1 min of arc the computed orbital eccentricity is accurate to about 10−5 and the inclination to about 2 sec of arc.Ephemerides computed from the orbital parameters should be accurate to about 12km role=presentation style=font-size: 90%; display: inline-block; position: relative;>, the accuracy required by the Ariel 2 experimenters. Limitations which prevent the accuracy from being better than this are discussed.
