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JPL Small-Body Database Browser
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46531 (1981 EV11)
Classification: Main-belt Asteroid          SPK-ID: 2046531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05053101378366168 3.968e-08  
a 2.228380644379026 8.3629e-09 au
q 2.115778311322665 8.8965e-08 au
i 7.38828396253827 5.3957e-06 deg
node 213.3255426936904 3.4148e-05 deg
peri 109.718547785184 6.4367e-05 deg
M 22.47371053135042 5.3993e-05 deg
tp 2458524.650141467110
(2019-Feb-10.15014147)
0.00018219 TDB
period 1215.017388149987
3.33
6.8398e-06
1.873e-08
d
yr
n .2962920559911855 1.6679e-09 deg/d
Q 2.340982977435388 8.7855e-09 au
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      14150 days (38.74 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56339  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Earth MOID = 1.11693 au 
 Jupiter MOID = 2.78154 au 
 T_jup = 3.631 
[ show covariance matrix ]

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 16.1   n/a MPO449295  

46531 (1981 EV11)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EV11 = 1999 VW80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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