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37990 (1998 KN4)
Classification: Main-belt Asteroid          SPK-ID: 2037990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1763652000067377 3.7981e-08  
a 2.664578740111533 1.5009e-08 au
q 2.194639777678061 1.0052e-07 au
i 10.97827974449972 4.3811e-06 deg
node 83.79072219123177 2.7162e-05 deg
peri 175.6503826181307 3.1305e-05 deg
M 9.814943583623783 1.8271e-05 deg
tp 2458957.186171620647
(2020-Apr-17.68617162)
8.0423e-05 TDB
period 1588.697691811908
4.35
1.3423e-05
3.675e-08
d
yr
n .2266006943016455 1.9145e-09 deg/d
Q 3.134517702545004 1.7656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      25237 days (69.10 yr)  
   first obs. used      1950-04-22  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60085  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:41:59  

Additional Information
 Earth MOID = 1.17944 au 
 Jupiter MOID = 1.93927 au 
 T_jup = 3.336 
[ 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 14.6   n/a MPO436034  
diameter diameter 3.628 km 0.874 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.256   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37990 (1998 KN4)          Discovered 1998-May-22 by LONEOS at Anderson Mesa
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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