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(2009 WP7)
Classification: Mars-crossing Asteroid          SPK-ID: 3478000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455155.5 (2009-Nov-20.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4910824584629811 0.031197  
a 2.82384841572292 0.1915 au
q 1.437105993402914 0.013481 au
i 15.74565834729569 0.47678 deg
node 47.62630181178126 0.10131 deg
peri 5.416042158210314 6.7942 deg
M 359.7889540526074 1.9852 deg
tp 2455156.516096635272
(2009-Nov-21.01609664)
9.6323 TDB
period 1733.247158816646
4.75
176.31
0.4827
d
yr
n .2077026338504347 0.021128 deg/d
Q 4.210590838042926 0.28554 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      1 day  
   first obs. used      2009-11-19  
   last obs. used      2009-11-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .42677  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:12:23  

Additional Information
 Earth MOID = .448072 au 
 Jupiter MOID = 1.20897 au 
 T_jup = 3.078 
[ 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 21.639   .40378 4 autocmod 2.9c

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