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120445 (1981 EU16)
Classification: Main-belt Asteroid          SPK-ID: 2120445
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827592084765798 3.2942e-08  
a 2.351483236931706 8.8412e-09 au
q 1.921728021804122 7.824e-08 au
i 4.625707425360091 4.5575e-06 deg
node 325.5880618119601 5.3546e-05 deg
peri 141.3752042713336 5.6007e-05 deg
M 6.646843201186667 1.5263e-05 deg
tp 2458976.182205130036
(2020-May-06.68220513)
5.5789e-05 TDB
period 1317.077278372384
3.61
7.428e-06
2.034e-08
d
yr
n .2733324808737724 1.5415e-09 deg/d
Q 2.78123845205929 1.0457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      14226 days (38.95 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5012  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:19:32  

Additional Information
 Earth MOID = .940978 au 
 Jupiter MOID = 2.34658 au 
 T_jup = 3.530 
[ 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 16.4   n/a MPO453675  
diameter diameter 3.036 km 0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120445 (1981 EU16)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1981 EU16 = 1999 FN59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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