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180718 (2004 JD20)
Classification: Main-belt Asteroid          SPK-ID: 2180718
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711736629216938 5.3318e-08  
a 2.629327595969725 1.7286e-08 au
q 2.179255960346496 1.4029e-07 au
i 5.5170507677229 5.9858e-06 deg
node 23.46028682252348 4.8952e-05 deg
peri 157.7554856684333 5.0792e-05 deg
M 359.0669061660757 1.5891e-05 deg
tp 2459204.536345141301
(2020-Dec-21.03634514)
6.8759e-05 TDB
period 1557.275590127082
4.26
1.5357e-05
4.205e-08
d
yr
n .2311729550519842 2.2797e-09 deg/d
Q 3.079399231592954 2.0245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      9977 days (27.32 yr)  
   first obs. used      1993-11-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:40  

Additional Information
 Earth MOID = 1.18255 au 
 Jupiter MOID = 1.87793 au 
 T_jup = 3.373 
[ 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 16.2   n/a MPO527376  

180718 (2004 JD20)          Discovered 2004-May-14 by CSS at Catalina
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 JD20 = 1997 VL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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