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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816379741602459 5.3863e-08  
a 2.397847329742315 2.2056e-08 au
q 1.962307198422366 1.3709e-07 au
i 2.431743434822126 6.1275e-06 deg
node 157.4973058530328 0.0001511 deg
peri 299.3100602907521 0.00015393 deg
M 337.3401200289927 3.7663e-05 deg
tp 2459481.866175217218
(2021-Sep-24.36617522)
0.00014287 TDB
period 1356.221794533737
3.71
1.8712e-05
5.123e-08
d
yr
n .2654433083519105 3.6624e-09 deg/d
Q 2.833387461062264 2.6062e-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 = .98064 au 
 Jupiter MOID = 2.33818 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 18.13   n/a MPCxxxxx  

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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