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JPL Small-Body Database Browser
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390817 (2004 KW18)
Classification: Main-belt Asteroid          SPK-ID: 2390817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04128178266461675 7.3537e-08  
a 2.978974842456763 3.6485e-08 au
q 2.855997450447101 2.2287e-07 au
i 24.50427396960847 8.2397e-06 deg
node 157.0420126066903 1.8696e-05 deg
peri 110.7175940513675 0.00010528 deg
M 298.4483153895089 0.00010214 deg
tp 2458921.596907705995
(2020-Mar-13.09690771)
0.00053366 TDB
period 1878.013372106079
5.14
3.4501e-05
9.446e-08
d
yr
n .1916919258121584 3.5216e-09 deg/d
Q 3.101952234466424 3.7991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      98  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2000-09-05  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51102  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:07:24  

Additional Information
 Earth MOID = 1.89755 au 
 Jupiter MOID = 2.03685 au 
 T_jup = 3.123 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO455776  

390817 (2004 KW18)          Discovered 2004-May-22 by Sloan Digital Sky Survey at Apache Point
Reference: Last Updated: 2014-04-17

Alternate Designations
 2004 KW18 = 2010 KJ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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