YANG Wanling,GAO Wutong,LIU Lu,et al.Orbit Determination and Accuracy Analysis for Comet 311P Based on Space-Based and Ground-Based Optical Data[J].Geomatics and Information Science of Wuhan University,2025,50(5):874-880.
YANG Wanling,GAO Wutong,LIU Lu,et al.Orbit Determination and Accuracy Analysis for Comet 311P Based on Space-Based and Ground-Based Optical Data[J].Geomatics and Information Science of Wuhan University,2025,50(5):874-880.DOI:10.13203/j.whugis20220710
Orbit Determination and Accuracy Analysis for Comet 311P Based on Space-Based and Ground-Based Optical Data
China has formulated plans to undertake a proximity exploration of comet 311P/PANSTARRS ( previously known as P/2013 P5) around 2034. However
the successful execution of this mission is contingent upon obtaining an accurate determination of the orbit of comet 311P.
Methods
2
The small body precise orbit determination toolkit (SPOT) developed by the planetary radio science team of Wuhan University is used to perform a study of the precise orbit determination for comet 311P in the context of China's small body exploration mission. We used the optical observations of ground-based and space-based telescopes released from October 17
2005 to January 18
2021
.
Results
2
The position and velocity uncertainties of comet 311P obtained by SPOT are about 129.5 km and 5.034×10
-3
m/s respectively
which are in close agreement with the position and velocity uncertainties (135.8 km and 5.270×10
-3
m/s) calculated by the well-known OrbFit.
Conclusions
2
This experimental outcome not only validated the dependability of the optical data-based orbit determination module of the SPOT software
but also highlighted that the current positional uncertainty of comet 311P's orbit is on the order of hundreds of meters. Furthermore
this study investigates the influence of the mechanical model utilized in the orbit determination process on the calculation results. The findings indicate that the gravitational field of the 16 large main-belt asteroids
as well as the perturbations caused by general relativity and solar light pressure
can be neglected in the current orbit determination process of 311P. Additionally
this paper evaluates the potential impact of ground-based optical observations conducted before the mission on the orbit determination of comet 311P.
Conclusions
2
The results suggest that such observations have the potential to reduce the orbital uncertainty of the comet
but the uncertainty in the position of the orbit still remains significant
LI Chunlai , LIU Jianjun , YAN Wei , et al . Overview of Scientific Objectives for Minor Planets Exploration [J]. Journal of Deep Space Exploration , 2019 , 6 ( 5 ): 424 - 436 .
SUN Zezhou , MENG Linzhi . Current Situation and Sustainable Development Trend of Deep Space Exploration in China [J]. Journal of Nanjing University of Aeronautics & Astronautics , 2015 , 47 ( 6 ): 785 - 791 .
WANG Bo , LIU Lu , YAN Jianguo , et al . Development of Asteroid Optical Determination Software and Data Processing Analysis [J]. Geomatics and Information Science of Wuhan University , 2023 , 48 ( 2 ): 277 - 284 .
ZHONG Jiageng , YAN Jianguo , LI Ming . Exploration Mission and Shape Modeling of Small Celestial Bodies: A Review [J]. Progress in Geophysics , 2022 , 37 ( 1 ): 142 - 151 .
HAND E . Dawn Probe to Look for a Habitable Ocean on Ceres [J]. Science , 2015 , 347 ( 6224 ): 813 - 814 .
PARKER E T , CHAN Q H S , GLAVIN D P , et al . Non-Protein Amino Acids Identified in Carbon-Rich Hayabusa Particles [J]. Meteoritics & Planetary Science , 2022 , 57 ( 4 ): 776 - 793 .
LIU Yan , WANG Lei . China's Small Celestial Body Exploration Has Entered the Stage of Engineering Development [J]. Space Exploration , 2021 ( 5 ): 14 - 15 .
HU Shoucun , JI Jianghui , ZHAO Yuhui , et al . Determination and Accuracy Analysis of Tutatis Orbit in Chang'e-2 Flying over Asteroids Test [J]. Scientia Sinica (Technologica) , 2013 , 43 ( 5 ): 506 - 511 .
YOSHIKAWA M , IKEDA H , YANO H , et al . Astrodynamics Science About Itokawa, Gravity and Ephemeris [C]//AIAA/AAS A strodynamics Specialist Conference and Exhibit , Keystone, Colorado , 2006 .
SCHEERES D J , MCMAHON J W , FRENCH A S , et al . The Dynamic Geophysical Environment of (101955) Bennu Based on OSIRIS-REx Measurements [J]. Nature Astronomy , 2019 , 3 ( 4 ): 352 - 361 .
YU Houman , ZHANG He , HUANG Xiaofeng , et al . Tentative Idea of Small Celestial Body Exploration Mission in China [J]. Space International , 2021 ( 9 ): 4 - 9 .
JEWITT D , AGARWAL J , WEAVER H , et al . Episodic Ejection from Active Asteroid 311P/PANSTARRS [J]. The Astrophysical Journal , 2015 , 798 ( 2 ): 109 .
MARSDEN B G . The Minor Planet Center [J]. Celestial Mechanics , 1980 , 22 : 63 - 71 .
GAO W T , YAN J G , JIN W T , et al . A Simulated Gravity Field Estimation for the Main Belt Comet 133P/Elst-Pizarro [J]. Astrophysics and Space Science , 2021 , 366 ( 6 ): 57 .
GAO W T , YAN J G , WANG B , et al . A Lander Radio Science Experiment for the Estimation of the Gravity Field and Rotation of Comet 133P/Elst-Pizarro [J]. Monthly Notices of the Royal Astronomical Society , 2021 , 505 ( 1 ): 103 - 115 .
WANG B , YAN J G , GAO W T , et al . The Neptunian Gravity Estimated from the Motion of Triton Based on Astrometric Observations [J]. Astronomy & Astrophysics , 2023 , 671 : A70 .
HOHENKERK C . Standards of Fundamental Astronomy [J]. Scholarpedia , 2011 , 6 ( 1 ): 11404 .
VEREŠ P , FARNOCCHIA D , CHESLEY S R , et al . Statistical Analysis of Astrometric Errors for the most Productive Asteroid Surveys [J]. Icarus , 2017 , 296 : 139 - 149 .
PARK R S , FOLKNER W M , WILLIAMS J G , et al . The JPL Planetary and Lunar Ephemerides DE440 and DE441 [J]. The Astronomical Journal , 2021 , 161 ( 3 ): 105 .
JEWITT D , WEAVER H , MUTCHLER M , et al . The Nucleus of Active Asteroid 311P/(2013 P5) PANSTARRS [J]. The Astronomical Journal , 2018 , 155 ( 6 ): 231 .
DEL VIGNA A , ROA J , FARNOCCHIA D , et al . Yarkovsky Effect Detection and Updated Impact Hazard Assessment for Near-Earth Asteroid (410777) 2009 FD [J]. Astronomy & Astrophysics , 2019 , 627 : L11 .