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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0506424015958762 3.4173e-08  
a 2.228844191577922 7.6971e-09 au
q 2.115970168933397 7.4876e-08 au
i 7.387349284246952 5.2024e-06 deg
node 213.3219020249463 2.9795e-05 deg
peri 109.9773401072023 6.1543e-05 deg
M 140.7065372988149 5.3847e-05 deg
tp 2458525.460452548864
(2019-Feb-10.96045255)
0.00018154 TDB
period 1215.396529297218
3.33
6.2959e-06
1.724e-08
d
yr
n .2961996281231474 1.5343e-09 deg/d
Q 2.341718214222447 8.0869e-09 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      14238 days (38.98 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55744  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:29:58  

Additional Information
 Earth MOID = 1.11799 au 
 Jupiter MOID = 2.78119 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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