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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964198160153648 2.8104e-08  
a 2.363009328313382 5.8775e-09 au
q 1.898867470803477 6.7711e-08 au
i 1.492864045192169 4.0601e-06 deg
node 329.5630705845848 0.0001155 deg
peri 78.84062099704536 0.00011601 deg
M 291.2643456871971 9.8787e-06 deg
tp 2458853.823891773731
(2020-Jan-05.32389177)
3.6575e-05 TDB
period 1326.772865557148
3.63
4.9501e-06
1.355e-08
d
yr
n .2713350637064968 1.0123e-09 deg/d
Q 2.827151185823287 7.0319e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1252  
   data-arc span      15629 days (42.79 yr)  
   first obs. used      1977-02-11  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51973  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:19:59  

Additional Information
 Earth MOID = .909123 au 
 Jupiter MOID = 2.55647 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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