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85149 (1981 EU43)
Classification: Main-belt Asteroid          SPK-ID: 2085149
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1779746650913153 3.2501e-08  
a 2.637753815099676 1.2555e-08 au
q 2.168300463263972 8.8646e-08 au
i 15.41473106235112 7.0252e-06 deg
node 324.8948773680089 1.3977e-05 deg
peri 83.21123249171865 2.5281e-05 deg
M 266.2985559432605 2.1874e-05 deg
tp 2459803.780483723152
(2022-Aug-12.28048372)
9.6539e-05 TDB
period 1564.767497623094
4.28
1.1172e-05
3.059e-08
d
yr
n .2300661283844695 1.6426e-09 deg/d
Q 3.10720716693538 1.479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      14787 days (40.48 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51408  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:53:43  

Additional Information
 Earth MOID = 1.23902 au 
 Jupiter MOID = 2.43306 au 
 T_jup = 3.323 
[ 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 14.91   n/a MPO637169  
diameter diameter 4.563 km 0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.123   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85149 (1981 EU43)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1981 EU43 = 2000 QU90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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