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180283 (2003 WH81)
Classification: Main-belt Asteroid          SPK-ID: 2180283
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04710053858148882 4.9444e-08  
a 2.192322527596975 8.5806e-09 au
q 2.089062955802827 1.0915e-07 au
i 2.489509458862765 4.4087e-06 deg
node 333.8627930486902 0.00010804 deg
peri 49.34255824045584 0.00011668 deg
M 127.5215950466614 4.2573e-05 deg
tp 2458780.512531508066
(2019-Oct-24.01253151)
0.0001403 TDB
period 1185.646153514409
3.25
6.9608e-06
1.906e-08
d
yr
n .303631904791251 1.7826e-09 deg/d
Q 2.295582099391124 8.9847e-09 au
  Orbit Determination Parameters
   # obs. used (total)      406  
   data-arc span      8418 days (23.05 yr)  
   first obs. used      1998-03-01  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:25:53  

Additional Information
 Earth MOID = 1.09068 au 
 Jupiter MOID = 2.86547 au 
 T_jup = 3.669 
[ 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 17.2   n/a MPO527373  

180283 (2003 WH81)          Discovered 2003-Nov-20 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2003 WH81 = 1998 ED5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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