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154345 (2002 WS18)
Classification: Main-belt Asteroid          SPK-ID: 2154345
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925783569190464 4.5263e-08  
a 2.274837623907886 1.0445e-08 au
q 1.836753132038078 9.9773e-08 au
i 2.979532122061653 5.2145e-06 deg
node 147.8275871922679 0.00013322 deg
peri 176.0069225425669 0.00013451 deg
M 117.9029958135547 2.1215e-05 deg
tp 2458590.063127038099
(2019-Apr-16.56312704)
7.2353e-05 TDB
period 1253.210516380259
3.43
8.6315e-06
2.363e-08
d
yr
n .2872621920216683 1.9785e-09 deg/d
Q 2.712922115777695 1.2457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      6830 days (18.70 yr)  
   first obs. used      2001-05-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58628  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:31:58  

Additional Information
 Earth MOID = .824564 au 
 Jupiter MOID = 2.61057 au 
 T_jup = 3.583 
[ 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 16.8   n/a MPO502912  

154345 (2002 WS18)          Discovered 2002-Nov-29 by Ball, L. at Emerald Lane
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2002 WS18 = 2005 NX72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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