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JPL Small-Body Database Browser
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65653 (1981 EP44)
Classification: Main-belt Asteroid          SPK-ID: 2065653
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124204038504852 4.0542e-08  
a 2.314984253103543 9.452e-09 au
q 2.054732788462129 9.4931e-08 au
i 5.951475591641071 4.9609e-06 deg
node 178.718196925609 3.9058e-05 deg
peri 63.21806912475813 4.468e-05 deg
M 350.4254345903149 2.0615e-05 deg
tp 2459034.716616193965
(2020-Jul-04.21661619)		 7.3668e-05 TDB
period 1286.531691283581
3.52		 7.8793e-06
2.157e-08		 d
yr
n .2798221003330478 1.7137e-09 deg/d
Q 2.575235717744958 1.0515e-08 au
   Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      14296 days (39.14 yr)  
   first obs. used      1981-03-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 12:53:10  

Additional Information
 Earth MOID = 1.0507 au 
 Jupiter MOID = 2.43328 au 
 T_jup = 3.566 
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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 16.4   n/a MPO422120  

65653 (1981 EP44)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 EP44 = 1999 LM9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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