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213553 (2002 KW4)
Classification: Main-belt Asteroid          SPK-ID: 2213553
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774312609426754 2.9466e-08  
a 2.323348813214494 9.663e-09 au
q 1.911114103676178 6.6248e-08 au
i 2.163564381632146 4.4133e-06 deg
node 141.5012222363615 8.5004e-05 deg
peri 103.8594988439302 8.6191e-05 deg
M 88.03885308390444 1.3206e-05 deg
tp 2458884.168873617415
(2020-Feb-04.66887362)
4.6874e-05 TDB
period 1293.510779714488
3.54
8.0697e-06
2.209e-08
d
yr
n .278312330786653 1.7363e-09 deg/d
Q 2.73558352275281 1.1378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      8265 days (22.63 yr)  
   first obs. used      1998-03-05  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:10  

Additional Information
 Earth MOID = .897667 au 
 Jupiter MOID = 2.28567 au 
 T_jup = 3.554 
[ 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 17.12   n/a E2021B55  

213553 (2002 KW4)          Discovered 2002-May-16 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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