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270984 (2002 WF28)
Classification: Main-belt Asteroid          SPK-ID: 2270984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815567386554527 5.3883e-08  
a 2.39784998399284 2.2274e-08 au
q 1.962504161114071 1.3717e-07 au
i 2.431716745768401 6.1274e-06 deg
node 157.4973461459292 0.0001511 deg
peri 299.2892207230843 0.00015393 deg
M 285.3232166659855 3.7056e-05 deg
tp 2459481.829025737083
(2021-Sep-24.32902574)
0.00014286 TDB
period 1356.224046399417
3.71
1.8897e-05
5.174e-08
d
yr
n .2654428676115492 3.6986e-09 deg/d
Q 2.833195806871609 2.6318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      6503 days (17.80 yr)  
   first obs. used      2002-11-23  
   last obs. used      2020-09-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:34:25  

Additional Information
 Earth MOID = .98047 au 
 Jupiter MOID = 2.3382 au 
 T_jup = 3.504 
[ 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 17.9   n/a MPO433756  

270984 (2002 WF28)          Discovered 2002-Nov-24 by NEAT at Palomar
Reference: 20110418/Numbers.arcLast Updated: 2011-04-22

[ show close-approach data ]
Alternate Designations
 2002 WF28 = 2007 BT38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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