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392952 (2012 WT20)
Classification: Main-belt Asteroid          SPK-ID: 2392952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04235930129987573 8.7907e-08  
a 3.019847954508425 7.6286e-08 au
q 2.891929305123589 3.0305e-07 au
i 10.01932280087167 6.8837e-06 deg
node 46.20783373367927 5.1214e-05 deg
peri 84.55439714784215 9.8271e-05 deg
M 18.37316762539005 8.4808e-05 deg
tp 2458502.673260416522
(2019-Jan-19.17326042)
0.00045097 TDB
period 1916.796655215002
5.25
7.2632e-05
1.989e-07
d
yr
n .1878133494340952 7.1167e-09 deg/d
Q 3.147766603893261 7.9518e-08 au
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      5398 days (14.78 yr)  
   first obs. used      2004-05-24  
   last obs. used      2019-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67349  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:23:26  

Additional Information
 Earth MOID = 1.92949 au 
 Jupiter MOID = 1.90083 au 
 T_jup = 3.222 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457472.5 (2016-Mar-25.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04324115315605024 8.7843e-08  
q 2.889830654469291 3.0287e-07 au
tp 2456583.937413231517
(2013-Oct-18.43741323)
0.00043709 TDB
node 46.22066795986836 5.1216e-05 deg
peri 84.37498795221569 9.6867e-05 deg
i 10.01910973602838 6.8836e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      5398 days (14.78 yr)  
   first obs. used      2004-05-24  
   last obs. used      2019-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67349  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:23:26  

Additional Information
 Jupiter MOID = 1.90083 au 
 T_jup = 3.222 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.716426836407365E-15 -2.595867886141657E-14 8.954902522188784E-12 -2.446265758172836E-14 1.631343834953717E-12 -3.652920323201771E-15
q -2.595867886141657E-14 9.172737140822944E-14 -2.739706717277276E-11 8.635245621154803E-14 -4.604487850854081E-12 1.904628142111322E-14
tp 8.954902522188784E-12 -2.739706717277276E-11 1.91045110298589E-7 1.623943036311509E-10 3.599240364261552E-8 -1.254203918322725E-11
node -2.446265758172836E-14 8.635245621154803E-14 1.623943036311509E-10 2.623060599297507E-9 -2.551031419151917E-9 -6.873238895965589E-11
peri 1.631343834953717E-12 -4.604487850854081E-12 3.599240364261552E-8 -2.551031419151917E-9 9.383189449371264E-9 6.599395741508076E-11
i -3.652920323201771E-15 1.904628142111322E-14 -1.254203918322725E-11 -6.873238895965589E-11 6.599395741508076E-11 4.738332579247106E-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 16.0   n/a MPO427955  

392952 (2012 WT20)          Discovered 2009-Mar-18 by CSS at Catalina
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2012 WT20 = 2014 DB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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