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11461 Wladimirneumann (1981 EM18)
Classification: Main-belt Asteroid          SPK-ID: 2011461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09988618938906406 5.3713e-08  
a 2.281081485125267 7.287e-09 au
q 2.053232947890157 1.217e-07 au
i 5.858062031182435 5.0588e-06 deg
node 337.5247587778932 3.7692e-05 deg
peri 202.3438500260485 4.1443e-05 deg
M 132.8085739887179 1.62e-05 deg
tp 2458536.269961107772
(2019-Feb-21.76996111)
5.6764e-05 TDB
period 1258.37368011646
3.45
6.0299e-06
1.651e-08
d
yr
n .286083542343863 1.3709e-09 deg/d
Q 2.508930022360377 8.0149e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1553  
   data-arc span      14846 days (40.65 yr)  
   first obs. used      1979-10-18  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:15:42  

Additional Information
 Earth MOID = 1.05826 au 
 Jupiter MOID = 2.46061 au 
 T_jup = 3.592 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO473921  
diameter diameter 3.480 km 0.719 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.440   0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11461 Wladimirneumann           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Wladimir Neumann (b. 1981) is a researcher at the German Aerospace Center (DLR-Berlin) who studies water-rock differentiation of icy bodies applicable to interpreting Ceres data from the Dawn mission.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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