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135473 (2001 WD21)
Classification: Main-belt Asteroid          SPK-ID: 2135473
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08443534956803238 3.9295e-08  
a 2.779988109285586 1.8509e-08 au
q 2.545258841483084 1.1336e-07 au
i 1.930182035311384 5.155e-06 deg
node 353.2189688425765 0.000115 deg
peri 115.2351678367825 0.0001193 deg
M 352.0568721636004 3.042e-05 deg
tp 2459237.855270510666
(2021-Jan-23.35527051)
0.00014311 TDB
period 1693.022907451443
4.64
1.6908e-05
4.629e-08
d
yr
n .2126374063903946 2.1235e-09 deg/d
Q 3.014717377088088 2.0071e-08 au
  Orbit Determination Parameters
   # obs. used (total)      487  
   data-arc span      9804 days (26.84 yr)  
   first obs. used      1994-04-07  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:13:12  

Additional Information
 Earth MOID = 1.56262 au 
 Jupiter MOID = 2.06759 au 
 T_jup = 3.328 
[ 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 16.49   n/a MPCxxxxx  

135473 (2001 WD21)          Discovered 2001-Nov-18 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 2001 WD21 = 2003 EW47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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