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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 ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1688429413502439 8.1126e-08  
a 2.432533207477161 2.5392e-08 au
q 2.021817145794574 2.022e-07 au
i 4.545313807239466 9.6691e-06 deg
node 94.69728242794213 0.00010588 deg
peri 263.2887338106103 0.00011308 deg
M 104.9183222033784 3.2868e-05 deg
tp 2458796.635732847587
(2019-Nov-09.13573285)
0.00012659 TDB
period 1385.755444059008
3.79
2.1698e-05
5.941e-08
d
yr
n .2597860982927306 4.0676e-09 deg/d
Q 2.843249269159748 2.9679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      5484 days (15.01 yr)  
   first obs. used      2006-01-31  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50095  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:45:15  

Additional Information
 Earth MOID = 1.02229 au 
 Jupiter MOID = 2.60988 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458009.5 (2017-Sep-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1701189559748006 8.1332e-08  
q 2.017819675793589 2.0295e-07 au
tp 2457410.280175706261
(2016-Jan-22.78017571)
0.00012649 TDB
node 94.7391252809897 0.00010605 deg
peri 263.0278452274979 0.00011306 deg
i 4.54345446874229 9.6603e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      5484 days (15.01 yr)  
   first obs. used      2006-01-31  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50095  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:45:15  

Additional Information
 Jupiter MOID = 2.60988 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.614953841539409E-15 -1.642152344769707E-14 -4.846001597168891E-12 -1.116973200592073E-16 -1.3790846584343E-12 -2.398547203252329E-14
q -1.642152344769707E-14 4.119027677100434E-14 1.129937206573454E-11 2.432110992102522E-14 3.222202330077327E-12 6.209387527924205E-14
tp -4.846001597168891E-12 1.129937206573454E-11 1.599958797043618E-8 -1.224076263230163E-10 5.008933013146905E-9 1.993577219092875E-11
node -1.116973200592073E-16 2.432110992102522E-14 -1.224076263230163E-10 1.124739014211856E-8 -1.124900450766767E-8 5.628918671362939E-10
peri -1.3790846584343E-12 3.222202330077327E-12 5.008933013146905E-9 -1.124900450766767E-8 1.278176206339548E-8 -5.552673865915575E-10
i -2.398547203252329E-14 6.209387527924205E-14 1.993577219092875E-11 5.628918671362939E-10 -5.552673865915575E-10 9.332117276281102E-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 17.62   n/a MPCxxxxx  

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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