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442744 (2012 WW13)
Classification: Main-belt Asteroid          SPK-ID: 2442744
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172942043366386 6.5206e-08  
a 2.311195573712292 2.4067e-08 au
q 1.808986170456119 1.4929e-07 au
i 3.153425329492643 7.3586e-06 deg
node 116.3394402134881 0.00010145 deg
peri 208.4517282088782 0.00010473 deg
M 122.9605433148685 2.1855e-05 deg
tp 2458562.154305479265
(2019-Mar-19.65430548)
7.4369e-05 TDB
period 1283.374697063352
3.51
2.0046e-05
5.488e-08
d
yr
n .2805104392534468 4.3815e-09 deg/d
Q 2.813404976968466 2.9297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      5130 days (14.05 yr)  
   first obs. used      2005-11-10  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:11:41  

Additional Information
 Earth MOID = .797638 au 
 Jupiter MOID = 2.52079 au 
 T_jup = 3.550 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457411.5 (2016-Jan-24.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2181637378180731 6.495e-08  
q 1.806481867557415 1.4868e-07 au
tp 2457279.519534206524
(2015-Sep-14.01953421)
6.6441e-05 TDB
node 116.3818848117767 0.0001015 deg
peri 208.4932892646968 0.00010475 deg
i 3.153148740245962 7.3576e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      5130 days (14.05 yr)  
   first obs. used      2005-11-10  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:11:41  

Additional Information
 Jupiter MOID = 2.52079 au 
 T_jup = 3.550 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.218477238632368E-15 -9.580907981985939E-15 -1.821477880819392E-12 9.151810718967261E-14 -7.510760897559757E-13 -1.02432111660943E-15
q -9.580907981985939E-15 2.21049354224527E-14 4.5021832800811E-12 -2.134837676824148E-13 1.854178206858079E-12 1.833017556423454E-15
tp -1.821477880819392E-12 4.5021832800811E-12 4.414379989418106E-9 -9.240276371005617E-11 1.744834009176079E-9 -1.366350032159818E-12
node 9.151810718967261E-14 -2.134837676824148E-13 -9.240276371005617E-11 1.030202318377731E-8 -1.03178472269797E-8 -2.61676799200647E-11
peri -7.510760897559757E-13 1.854178206858079E-12 1.744834009176079E-9 -1.03178472269797E-8 1.097356569641694E-8 2.553773141730525E-11
i -1.02432111660943E-15 1.833017556423454E-15 -1.366350032159818E-12 -2.61676799200647E-11 2.553773141730525E-11 5.413487103439284E-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 18.1   n/a MPO446756  

442744 (2012 WW13)          Discovered 2008-Jul-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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