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(2009 WH25)
Classification: Main-belt Asteroid          SPK-ID: 3478338
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260788868535569 5.9755e-08  
a 3.003487297835373 5.0888e-08 au
q 2.624810962645491 1.9856e-07 au
i 10.21803570282262 6.0201e-06 deg
node 87.87106448306677 4.2261e-05 deg
peri 10.21594868043052 5.3728e-05 deg
M 339.8590547708839 3.5144e-05 deg
tp 2459106.868852455642
(2020-Sep-14.36885246)
0.00018685 TDB
period 1901.240803171167
5.21
4.8319e-05
1.323e-07
d
yr
n .1893500283601843 4.8122e-09 deg/d
Q 3.382163633025254 5.7304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      5462 days (14.95 yr)  
   first obs. used      2004-12-15  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59396  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-06 03:45:31  

Additional Information
 Earth MOID = 1.6423 au 
 Jupiter MOID = 1.80773 au 
 T_jup = 3.216 
[ 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 16.4   n/a E2019-WI7  
diameter diameter 2.758 km 0.645 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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