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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05082367481007661 3.0645e-08  
a 2.228389818111911 6.7924e-09 au
q 2.115134858646105 6.8489e-08 au
i 7.388249994051992 4.6641e-06 deg
node 213.3106479382851 2.3267e-05 deg
peri 110.2300673194261 5.3809e-05 deg
M 257.7599681056855 5.0128e-05 deg
tp 2459741.567176712319
(2022-Jun-11.06717671)
0.00016974 TDB
period 1215.024891080289
3.33
5.5553e-06
1.521e-08
d
yr
n .2962902263507712 1.3547e-09 deg/d
Q 2.341644777577716 7.1376e-09 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      14737 days (40.35 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:24:10  

Additional Information
 Earth MOID = 1.11647 au 
 Jupiter MOID = 2.77991 au 
 T_jup = 3.631 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.11   n/a MPCxxxxx  

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

Alternate Designations
 1981 EV11 = 1999 VW80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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