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442747 (2012 WO15)
Classification: Main-belt Asteroid          SPK-ID: 2442747
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687521342477044 8.8165e-08  
a 2.432146131221112 3.4412e-08 au
q 2.021716280775252 2.2697e-07 au
i 4.545541529006329 9.7207e-06 deg
node 94.6975853642797 0.00010913 deg
peri 263.2431668659885 0.00012699 deg
M 53.01095085024019 4.6194e-05 deg
tp 2458796.492554375017
(2019-Nov-08.99255437)
0.0001799 TDB
period 1385.424695219577
3.79
2.9403e-05
8.05e-08
d
yr
n .2598481182284277 5.5148e-09 deg/d
Q 2.842575981666971 4.0219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5019 days (13.74 yr)  
   first obs. used      2006-01-31  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:42:51  

Additional Information
 Earth MOID = 1.02383 au 
 Jupiter MOID = 2.6097 au 
 T_jup = 3.483 
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Orbital Elements at Epoch 2457856.5 (2017-Apr-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1702468375514426 8.8383e-08  
q 2.017324099814374 2.2775e-07 au
tp 2457410.362817600952
(2016-Jan-22.86281760)
0.0001922 TDB
node 94.74215879978618 0.00010932 deg
peri 263.0198415017574 0.0001267 deg
i 4.54361373420315 9.7127e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5019 days (13.74 yr)  
   first obs. used      2006-01-31  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:42:51  

Additional Information
 Jupiter MOID = 2.6097 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.811574599396943E-15 -1.999540872528954E-14 1.687196271218752E-13 -3.642188657540591E-14 3.314276527520354E-13 -3.05876715692743E-14
q -1.999540872528954E-14 5.187001692391908E-14 -3.716162755361403E-12 1.529175544796391E-13 -1.919439796638233E-12 8.113905584655451E-14
tp 1.687196271218752E-13 -3.716162755361403E-12 3.694202020419163E-8 -4.862051111410604E-10 1.236523543373647E-8 4.100835250123435E-13
node -3.642188657540591E-14 1.529175544796391E-13 -4.862051111410604E-10 1.195060267977307E-8 -1.206946665249852E-8 5.374970024347912E-10
peri 3.314276527520354E-13 -1.919439796638233E-12 1.236523543373647E-8 -1.206946665249852E-8 1.605414500904627E-8 -5.365381490255587E-10
i -3.05876715692743E-14 8.113905584655451E-14 4.100835250123435E-13 5.374970024347912E-10 -5.365381490255587E-10 9.433679927791877E-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 17.5   n/a MPO343131  

442747 (2012 WO15)          Discovered 2008-Oct-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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