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227469 (2005 WQ142)
Classification: Main-belt Asteroid          SPK-ID: 2227469
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06408061874993916 6.0519e-08  
a 2.621517443000247 2.7079e-08 au
q 2.453528983189032 1.5741e-07 au
i 1.26010381639646 7.5647e-06 deg
node 210.8545015731117 0.00027756 deg
peri 227.5171804684756 0.00028896 deg
M 179.18972251632 8.5824e-05 deg
tp 2458428.818389976499
(2018-Nov-06.31838998)
0.00036125 TDB
period 1550.34214969086
4.24
2.4021e-05
6.577e-08
d
yr
n .2322068067824799 3.5978e-09 deg/d
Q 2.789505902811461 2.8814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      8627 days (23.62 yr)  
   first obs. used      1996-09-15  
   last obs. used      2020-04-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57859  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:53  

Additional Information
 Earth MOID = 1.46871 au 
 Jupiter MOID = 2.35309 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457142.5 (2015-Apr-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06416705446128486 6.0357e-08  
q 2.454875174663496 1.5628e-07 au
tp 2456884.611046026785
(2014-Aug-15.11104603)
0.00034494 TDB
node 210.9276704245391 0.00027807 deg
peri 228.9723178725092 0.0002894 deg
i 1.258248289967606 7.5598e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      8627 days (23.62 yr)  
   first obs. used      1996-09-15  
   last obs. used      2020-04-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57859  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:53  

Additional Information
 Jupiter MOID = 2.35309 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.642988393351689E-15 -9.31411280170064E-15 -4.309102926461805E-13 8.139737430767854E-15 -2.775088599889329E-13 -1.147118586176547E-15
q -9.31411280170064E-15 2.44236840536647E-14 6.516832875901188E-12 -1.820724522681355E-14 1.977302816510902E-12 2.619300357633671E-15
tp -4.309102926461805E-13 6.516832875901188E-12 1.189806076751997E-7 6.768002389228482E-11 2.767575725564018E-8 -8.415305134400108E-12
node 8.139737430767854E-15 -1.820724522681355E-14 6.768002389228482E-11 7.732276656039567E-8 -7.728830326461118E-8 -4.699240627249651E-10
peri -2.775088599889329E-13 1.977302816510902E-12 2.767575725564018E-8 -7.728830326461118E-8 8.375273125668538E-8 4.679357728989545E-10
i -1.147118586176547E-15 2.619300357633671E-15 -8.415305134400108E-12 -4.699240627249651E-10 4.679357728989545E-10 5.715100959880726E-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 17.32   n/a E2021B55  

227469 (2005 WQ142)          Discovered 2005-Nov-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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