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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05071180052671172 3.2236e-08  
a 2.228746676396174 7.1991e-09 au
q 2.115722919518199 7.1374e-08 au
i 7.387497144069607 4.8405e-06 deg
node 213.313760583176 2.7231e-05 deg
peri 110.0867714298227 5.7401e-05 deg
M 199.8350090052412 5.1529e-05 deg
tp 2459741.197775168941
(2022-Jun-10.69777517)
0.00017461 TDB
period 1215.316767115408
3.33
5.8884e-06
1.612e-08
d
yr
n .2962190679344209 1.4352e-09 deg/d
Q 2.341770433274148 7.5642e-09 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      14659 days (40.13 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55173  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:39:09  

Additional Information
 Earth MOID = 1.11585 au 
 Jupiter MOID = 2.78039 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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