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376913 (2002 AF31)
Classification: Main-belt Asteroid          SPK-ID: 2376913
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1729620321139616 8.9618e-08  
a 2.602427422417982 2.2866e-08 au
q 2.152306287007469 2.2861e-07 au
i 3.287819039957298 7.8534e-06 deg
node 275.2130995112116 0.00015921 deg
peri 236.4917546625816 0.00016052 deg
M 107.2642773397922 1.9267e-05 deg
tp 2458543.602294437952
(2019-Mar-01.10229444)
8.145e-05 TDB
period 1533.438513562971
4.20
2.021e-05
5.533e-08
d
yr
n .2347665046989942 3.0942e-09 deg/d
Q 3.052548557828496 2.6821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      6340 days (17.36 yr)  
   first obs. used      2001-12-19  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 02:49:37  

Additional Information
 Earth MOID = 1.16524 au 
 Jupiter MOID = 1.96477 au 
 T_jup = 3.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457221.5 (2015-Jul-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736005017478774 8.9407e-08  
q 2.148469908981922 2.2841e-07 au
tp 2457010.463148229193
(2014-Dec-18.96314823)
8.2062e-05 TDB
node 275.2434313312144 0.00015924 deg
peri 236.0316727565519 0.00016054 deg
i 3.288566829565487 7.8529e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      6340 days (17.36 yr)  
   first obs. used      2001-12-19  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 02:49:37  

Additional Information
 Jupiter MOID = 1.96477 au 
 T_jup = 3.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.993547591994516E-15 -2.035610250945278E-14 5.374836175608916E-13 5.009327940648124E-14 1.438901060047706E-13 -7.436687221289479E-15
q -2.035610250945278E-14 5.216984252785157E-14 -1.660482178410137E-12 -1.291774332442347E-13 -4.27498606843643E-13 1.937813050572223E-14
tp 5.374836175608916E-13 -1.660482178410137E-12 6.734155553689613E-9 3.974270105835878E-11 1.777068757308351E-9 -1.32364803602823E-12
node 5.009327940648124E-14 -1.291774332442347E-13 3.974270105835878E-11 2.535603477055942E-8 -2.530288275163722E-8 4.805225403221158E-10
peri 1.438901060047706E-13 -4.27498606843643E-13 1.777068757308351E-9 -2.530288275163722E-8 2.577274957217514E-8 -4.799924946957366E-10
i -7.436687221289479E-15 1.937813050572223E-14 -1.32364803602823E-12 4.805225403221158E-10 -4.799924946957366E-10 6.166833904741816E-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 17.2   n/a MPO418910  

376913 (2002 AF31)          Discovered 2002-Jan-09 by LINEAR at Socorro
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2002 AF31 = 2009 WN186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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