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442523 (2011 WU95)
Classification: Apollo [NEO, PHA]          SPK-ID: 2442523
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .424746155272788 2.5946e-08  
a 1.666541588165729 3.6974e-08 au
q .9586844559901293 4.0269e-08 au
i 6.71616126831932 6.8061e-06 deg
node 67.70252738933448 3.4407e-05 deg
peri 242.3552444276856 3.6177e-05 deg
M 62.61058374242143 4.0755e-05 deg
tp 2458863.831662092417
(2020-Jan-15.33166209)
8.4502e-05 TDB
period 785.8192450199789
2.15
2.6151e-05
7.16e-08
d
yr
n .4581206203353384 1.5246e-08 deg/d
Q 2.374398720341328 5.2678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      1913 days (5.24 yr)  
   first obs. used      2011-11-30  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44642  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:20:28  

Additional Information
 Earth MOID = .0473078 au 
 Jupiter MOID = 2.93208 au 
 T_jup = 4.140 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456566.5 (2013-Oct-01.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4247117495275211 2.5908e-08  
q .9587896377023971 4.0204e-08 au
tp 2456505.935913310092
(2013-Aug-01.43591331)
1.7463e-05 TDB
node 67.78320075455616 3.4365e-05 deg
peri 242.2124887904643 3.6143e-05 deg
i 6.719682822152944 6.8082e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      1913 days (5.24 yr)  
   first obs. used      2011-11-30  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44642  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:20:28  

Additional Information
 Jupiter MOID = 2.93208 au 
 T_jup = 4.140 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.712159080095205E-16 -9.062324767204651E-16 2.763246028132401E-14 -3.652644331574341E-14 9.660321769828726E-14 1.542504907980588E-14
q -9.062324767204651E-16 1.616399475640981E-15 3.740888643329011E-14 5.139293832966184E-14 -1.026074711708777E-13 -1.917340121406291E-14
tp 2.763246028132401E-14 3.740888643329011E-14 3.049561136201919E-10 -1.872341086898254E-11 2.000075460867778E-10 6.442007191647038E-12
node -3.652644331574341E-14 5.139293832966184E-14 -1.872341086898254E-11 1.180941841077528E-9 -1.184246789523207E-9 -1.535733748852332E-10
peri 9.660321769828726E-14 -1.026074711708777E-13 2.000075460867778E-10 -1.184246789523207E-9 1.306327534481949E-9 1.575137481395316E-10
i 1.542504907980588E-14 -1.917340121406291E-14 6.442007191647038E-12 -1.535733748852332E-10 1.575137481395316E-10 4.635203163174782E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.5   n/a MPO402747  

442523 (2011 WU95)          Discovered 2011-Nov-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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