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226257 (2002 YZ31)
Classification: Main-belt Asteroid          SPK-ID: 2226257
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2352431289958537 5.2557e-08  
a 2.34136813203938 1.0926e-08 au
q 1.790577366527259 1.21e-07 au
i 2.876962484817313 6.3436e-06 deg
node 326.1691120585659 0.00011473 deg
peri 87.9161603252454 0.00011601 deg
M 350.5296064543916 1.2903e-05 deg
tp 2459034.924568653587
(2020-Jul-04.42456865)
4.6896e-05 TDB
period 1308.588144263329
3.58
9.1594e-06
2.508e-08
d
yr
n .2751056561059266 1.9256e-09 deg/d
Q 2.8921588975515 1.3496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      440  
   data-arc span      7122 days (19.50 yr)  
   first obs. used      1998-09-26  
   last obs. used      2018-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-05 16:05:42  

Additional Information
 Earth MOID = .804746 au 
 Jupiter MOID = 2.48573 au 
 T_jup = 3.525 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456430.5 (2013-May-18.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .236049908976508 5.3188e-08  
q 1.788945023531883 1.2265e-07 au
tp 2456415.412681064443
(2013-May-02.91268106)
4.9739e-05 TDB
node 326.4571014216075 0.00011476 deg
peri 87.28491696729603 0.00011602 deg
i 2.876283330297737 6.3502e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      440  
   data-arc span      7122 days (19.50 yr)  
   first obs. used      1998-09-26  
   last obs. used      2018-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-05 16:05:42  

Additional Information
 Jupiter MOID = 2.48573 au 
 T_jup = 3.525 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.828997104862837E-15 -6.50969879856395E-15 -1.295700001654633E-12 -2.564427862511528E-14 -4.385056680972411E-13 -9.078150025615173E-15
q -6.50969879856395E-15 1.504237353536409E-14 2.887585951384054E-12 6.212385313490987E-14 9.735925617094631E-13 2.093404036696831E-14
tp -1.295700001654633E-12 2.887585951384054E-12 2.473977218237129E-9 -2.87006793439024E-12 8.719350511451334E-10 4.734298143412111E-12
node -2.564427862511528E-14 6.212385313490987E-14 -2.87006793439024E-12 1.317081614788472E-8 -1.31546318801715E-8 2.950935628234707E-10
peri -4.385056680972411E-13 9.735925617094631E-13 8.719350511451334E-10 -1.31546318801715E-8 1.345998996561418E-8 -2.93023977296295E-10
i -9.078150025615173E-15 2.093404036696831E-14 4.734298143412111E-12 2.950935628234707E-10 -2.93023977296295E-10 4.032538792138947E-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 16.5   n/a MPO433482  

226257 (2002 YZ31)          Discovered 2002-Dec-31 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2002 YZ31 = 1998 SF108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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