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JPL Small-Body Database Browser
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(2018 WD2)
Classification: Apollo [NEO]          SPK-ID: 3836414
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5203663041938569 0.00030076  
a 2.047017238605931 0.0013384 au
q .9818184435314481 2.6303e-05 au
i 2.833112724008709 0.0012439 deg
node 250.8536525051544 0.0004367 deg
peri 199.5927950129554 7.6353e-05 deg
M 311.0611325072795 0.30171 deg
tp 2459541.922662294029
(2021-Nov-23.42266229)
1.0392 TDB
period 1069.746013914963
2.93
1.0492
0.002873
d
yr
n .3365284799543243 0.00033006 deg/d
Q 3.112216033680414 0.0020349 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      27 days  
   first obs. used      2018-11-08  
   last obs. used      2018-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .5287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:22  

Additional Information
 Earth MOID = .00794699 au 
 Jupiter MOID = 2.12772 au 
 T_jup = 3.612 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.2   .47461 E2018X27 autocmod 2.6q

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