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100919 (1998 KU54)
Classification: Main-belt Asteroid          SPK-ID: 2100919
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .226505818290249 3.3776e-08  
a 2.414338551959244 7.7039e-09 au
q 1.867476822618021 8.2263e-08 au
i 10.63109123039141 4.3402e-06 deg
node 166.0903158373929 1.7779e-05 deg
peri 122.0536409506966 1.9563e-05 deg
M 339.5216439200119 8.6965e-06 deg
tp 2459278.445001585030
(2021-Mar-04.94500158)		 3.3277e-05 TDB
period 1370.236969266879
3.75		 6.5584e-06
1.796e-08		 d
yr
n .2627282784470569 1.2575e-09 deg/d
Q 2.961200281300468 9.4489e-09 au
   Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      8034 days (22.00 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:29  

Additional Information
 Earth MOID = .874745 au 
 Jupiter MOID = 2.31838 au 
 T_jup = 3.459 
[ 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 15.47   n/a E2021B55  
diameter diameter 4.267 km 0.759 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.074   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

100919 (1998 KU54)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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