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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04710053785802944 4.9375e-08  
a 2.192322528872043 8.1832e-09 au
q 2.089062958603895 1.0884e-07 au
i 2.489508867931607 4.3834e-06 deg
node 333.8628374868891 0.00010273 deg
peri 49.34250480492371 0.00011021 deg
M 127.5216030225387 3.9333e-05 deg
tp 2458780.512504873420
(2019-Oct-24.01250487)
0.00012933 TDB
period 1185.646154548778
3.25
6.6385e-06
1.818e-08
d
yr
n .3036319045263597 1.7e-09 deg/d
Q 2.295582099140192 8.5687e-09 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1998-03-01  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56406  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:08:31  

Additional Information
 Earth MOID = 1.09068 au 
 Jupiter MOID = 2.86547 au 
 T_jup = 3.669 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457612.5 (2016-Aug-12.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04736609151186195 4.9574e-08  
q 2.088403968952044 1.093e-07 au
tp 2457592.020465555428
(2016-Jul-22.52046556)
0.00012756 TDB
node 333.9515866253675 0.00010267 deg
peri 48.39606020283928 0.00010999 deg
i 2.490288285088458 4.3861e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1998-03-01  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56406  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:08:31  

Additional Information
 Jupiter MOID = 2.86547 au 
 T_jup = 3.669 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.45759187890445E-15 -5.404655306045959E-15 -6.608958690316919E-13 -2.192394082383993E-15 -2.629371559523158E-13 -2.160065371579067E-15
q -5.404655306045959E-15 1.194617104967585E-14 1.4879230800937E-12 5.295793083384483E-15 5.877246949003985E-13 4.860903209565173E-15
tp -6.608958690316919E-13 1.4879230800937E-12 1.62711716137061E-8 -1.716989232069327E-11 5.051462022562094E-9 -1.089176088617248E-12
node -2.192394082383993E-15 5.295793083384483E-15 -1.716989232069327E-11 1.05411123124705E-8 -1.053579224472084E-8 1.548117602985264E-10
peri -2.629371559523158E-13 5.877246949003985E-13 5.051462022562094E-9 -1.053579224472084E-8 1.209864617637287E-8 -1.549431025645798E-10
i -2.160065371579067E-15 4.860903209565173E-15 -1.089176088617248E-12 1.548117602985264E-10 -1.549431025645798E-10 1.923797698837365E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.23   n/a MPCxxxxx  

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

Alternate Designations
 2003 WH81 = 1998 ED5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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