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442829 (2013 AU81)
Classification: Main-belt Asteroid          SPK-ID: 2442829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578955829217197 4.6865e-08  
a 2.440544925848883 2.3899e-08 au
q 2.055193662135328 1.1971e-07 au
i 2.328937202249433 5.6719e-06 deg
node 83.41368733979525 0.00021275 deg
peri 354.3124147158031 0.00021537 deg
M 4.31185665117021 3.6308e-05 deg
tp 2458983.820214928654
(2020-May-14.32021493)
0.00014034 TDB
period 1392.607201831436
3.81
2.0456e-05
5.601e-08
d
yr
n .2585079263747591 3.7972e-09 deg/d
Q 2.825896189562437 2.7673e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      5497 days (15.05 yr)  
   first obs. used      2004-10-08  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6156  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:02:17  

Additional Information
 Earth MOID = 1.07065 au 
 Jupiter MOID = 2.41342 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457442.5 (2016-Feb-24.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564015751957549 4.6432e-08  
q 2.059221445991863 1.1856e-07 au
tp 2457589.052403131745
(2016-Jul-19.55240313)
0.00013466 TDB
node 83.43702998089748 0.00021304 deg
peri 353.8829416848881 0.00021574 deg
i 2.328319891916357 5.6604e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      5497 days (15.05 yr)  
   first obs. used      2004-10-08  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6156  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:02:17  

Additional Information
 Jupiter MOID = 2.41342 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.155929464182021E-15 -5.426184617448478E-15 1.917330734626095E-12 8.173101671616732E-14 4.582120240853387E-13 -2.515914048450599E-16
q -5.426184617448478E-15 1.405533241513706E-14 -3.723323824946997E-12 -1.654253718273266E-13 -8.891946299700821E-13 1.587189631698047E-15
tp 1.917330734626095E-12 -3.723323824946997E-12 1.81340252105514E-8 4.97331026499224E-10 4.718454422366208E-9 5.561256188562311E-12
node 8.173101671616732E-14 -1.654253718273266E-13 4.97331026499224E-10 4.538573244820858E-8 -4.52059873491854E-8 5.274847958571603E-10
peri 4.582120240853387E-13 -8.891946299700821E-13 4.718454422366208E-9 -4.52059873491854E-8 4.654568541429001E-8 -5.255011824493144E-10
i -2.515914048450599E-16 1.587189631698047E-15 5.561256188562311E-12 5.274847958571603E-10 -5.255011824493144E-10 3.203966480849698E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8   n/a MPO495194  

442829 (2013 AU81)          Discovered 2008-Nov-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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