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10280 Yequanzhi (1981 EA43)
Classification: Main-belt Asteroid          SPK-ID: 2010280
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966210442123217 2.8077e-08  
a 2.363387073291936 5.7557e-09 au
q 1.898695439063373 6.7673e-08 au
i 1.49290001015235 3.8157e-06 deg
node 329.5580144410329 0.00011527 deg
peri 78.84681609884549 0.00011575 deg
M 39.79088466042474 9.4855e-06 deg
tp 2458853.816317432445
(2020-Jan-05.31631743)
3.4887e-05 TDB
period 1327.091020342152
3.63
4.8479e-06
1.327e-08
d
yr
n .2712700142505557 9.9096e-10 deg/d
Q 2.8280787075205 6.8874e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1354  
   data-arc span      15697 days (42.98 yr)  
   first obs. used      1977-02-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5089  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:38:40  

Additional Information
 Earth MOID = .909445 au 
 Jupiter MOID = 2.55654 au 
 T_jup = 3.523 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO449014  

10280 Yequanzhi           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Quan-Zhi Ye (b. 1988) is a postdoctoral researcher at the California Institute of Technology who studies the transitions between asteroids and comets and associated meteor streams.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

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