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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785536154390878 3.8435e-08  
a 2.635683529096565 1.3452e-08 au
q 2.165072705823119 1.028e-07 au
i 15.41385451516117 8.2975e-06 deg
node 324.9030164571518 1.5423e-05 deg
peri 83.43227852011459 2.8791e-05 deg
M 174.8803484693359 2.3676e-05 deg
tp 2458241.263934395660
(2018-May-02.76393440)
0.00010092 TDB
period 1562.925657513133
4.28
1.1965e-05
3.276e-08
d
yr
n .2303372513397842 1.7633e-09 deg/d
Q 3.106294352370011 1.5853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      14323 days (39.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52185  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:34:08  

Additional Information
 Earth MOID = 1.23655 au 
 Jupiter MOID = 2.43268 au 
 T_jup = 3.324 
[ 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 14.9   n/a MPO468820  
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

[ show close-approach data ]
Alternate Designations
 1981 EU43 = 2000 QU90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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