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213024 (1995 WX21)
Classification: Main-belt Asteroid          SPK-ID: 2213024
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09050712516662053 4.1639e-08  
a 2.464734888819162 1.6993e-08 au
q 2.24165881973427 1.0585e-07 au
i 5.555148757106209 4.4166e-06 deg
node 94.70124873969365 5.9083e-05 deg
peri 187.7144952034866 6.957e-05 deg
M 298.7481962882846 4.0142e-05 deg
tp 2459440.975107300324
(2021-Aug-14.47510730)
0.0001587 TDB
period 1413.363091078385
3.87
1.4617e-05
4.002e-08
d
yr
n .2547116181768428 2.6342e-09 deg/d
Q 2.687810957904054 1.8531e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      8892 days (24.34 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60645  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:41:02  

Additional Information
 Earth MOID = 1.22343 au 
 Jupiter MOID = 2.41077 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457249.5 (2015-Aug-15.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09148443453416159 4.1633e-08  
q 2.239068852313737 1.0595e-07 au
tp 2456611.573758157304
(2013-Nov-15.07375816)
0.00014622 TDB
node 94.76888861327008 5.9069e-05 deg
peri 187.1971545620587 6.9359e-05 deg
i 5.556042325200124 4.4173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      8892 days (24.34 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60645  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:41:02  

Additional Information
 Jupiter MOID = 2.41077 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.733291314340586E-15 -4.365020422382381E-15 6.70623236250268E-13 -2.384970131391016E-14 1.299948353723359E-13 -4.535535302049421E-17
q -4.365020422382381E-15 1.122556152191755E-14 -1.005163271045389E-12 5.905265513000204E-14 -1.382857405543964E-13 -5.747114576180489E-18
tp 6.70623236250268E-13 -1.005163271045389E-12 2.1379959627823E-8 -4.032128276573068E-11 5.352835082195345E-9 -1.485219701290302E-11
node -2.384970131391016E-14 5.905265513000204E-14 -4.032128276573068E-11 3.489203711756435E-9 -3.481775960182525E-9 -1.203979462099679E-11
peri 1.299948353723359E-13 -1.382857405543964E-13 5.352835082195345E-9 -3.481775960182525E-9 4.810676458909233E-9 8.304899802763794E-12
i -4.535535302049421E-17 -5.747114576180489E-18 -1.485219701290302E-11 -1.203979462099679E-11 8.304899802763794E-12 1.951239109020405E-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 16.96   n/a E2021B55  

213024 (1995 WX21)          Discovered 1995-Nov-17 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1995 WX21 = 2002 PN174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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