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442508 (2011 WA42)
Classification: Main-belt Asteroid          SPK-ID: 2442508
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778877167056623 6.9691e-08  
a 2.588787443764964 2.6071e-08 au
q 2.128273956357327 1.9267e-07 au
i 13.68695919012965 6.7526e-06 deg
node 200.1599144356215 1.5683e-05 deg
peri 184.2105730562 2.0217e-05 deg
M 41.25936583540982 1.0862e-05 deg
tp 2458826.133494111561
(2019-Dec-08.63349411)
4.5446e-05 TDB
period 1521.398616989055
4.17
2.2982e-05
6.292e-08
d
yr
n .2366243770567262 3.5744e-09 deg/d
Q 3.049300931172602 3.0708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      5410 days (14.81 yr)  
   first obs. used      2005-04-04  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:35  

Additional Information
 Earth MOID = 1.13201 au 
 Jupiter MOID = 2.40545 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457778.5 (2017-Jan-25.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785853130413354 6.9857e-08  
q 2.12617814035672 1.9295e-07 au
tp 2457300.575250113823
(2015-Oct-05.07525011)
4.7155e-05 TDB
node 200.2109455180494 1.5654e-05 deg
peri 183.392415982328 2.0147e-05 deg
i 13.69970221647809 6.7603e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      5410 days (14.81 yr)  
   first obs. used      2005-04-04  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:35  

Additional Information
 Jupiter MOID = 2.40545 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.880016773894117E-15 -1.341960516435152E-14 4.830307279145587E-13 6.135272973577144E-15 1.159077235462411E-13 -7.228004373716886E-15
q -1.341960516435152E-14 3.722989179000148E-14 -1.585764661370905E-12 -1.79448808837679E-14 -3.56690917112703E-13 2.11350064138597E-14
tp 4.830307279145587E-13 -1.585764661370905E-12 2.223593602968475E-9 -1.612243016180304E-12 5.990769189779443E-10 -6.817715161082545E-13
node 6.135272973577144E-15 -1.79448808837679E-14 -1.612243016180304E-12 2.450378017666209E-10 -2.380123238142468E-10 2.678629796093099E-12
peri 1.159077235462411E-13 -3.56690917112703E-13 5.990769189779443E-10 -2.380123238142468E-10 4.05888066021871E-10 -2.715414460296956E-12
i -7.228004373716886E-15 2.11350064138597E-14 -6.817715161082545E-13 2.678629796093099E-12 -2.715414460296956E-12 4.570132827589372E-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 16.6   n/a MPO495192  

442508 (2011 WA42)          Discovered 2011-Oct-27 by CSS at Catalina
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 WA42 = 2014 KK77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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