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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2264133867294597 3.3995e-08  
a 2.414254786255473 7.7959e-09 au
q 1.867635183671563 8.27e-08 au
i 10.6309307556659 4.3564e-06 deg
node 166.0912859940776 1.7992e-05 deg
peri 122.0419409702778 1.9745e-05 deg
M 286.9752547104454 8.5793e-06 deg
tp 2459278.433328507671
(2021-Mar-04.93332851)
3.328e-05 TDB
period 1370.16565913409
3.75
6.6366e-06
1.817e-08
d
yr
n .262741952113667 1.2726e-09 deg/d
Q 2.960874388839383 9.561e-09 au
  Orbit Determination Parameters
   # obs. used (total)      947  
   data-arc span      8005 days (21.92 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56871  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:57:30  

Additional Information
 Earth MOID = .876775 au 
 Jupiter MOID = 2.31927 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 15.5   n/a MPO366383  
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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