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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579822704298026 4.5982e-08  
a 2.440671714568876 2.3618e-08 au
q 2.055088855727485 1.1831e-07 au
i 2.328846410475691 5.46e-06 deg
node 83.41170661997371 0.00020658 deg
peri 354.2882326525272 0.00020924 deg
M 56.02605467996491 3.6038e-05 deg
tp 2458983.754535225445
(2020-May-14.25453523)
0.00013798 TDB
period 1392.715724220773
3.81
2.0216e-05
5.535e-08
d
yr
n .2584877830696 3.752e-09 deg/d
Q 2.826254573410266 2.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      5526 days (15.13 yr)  
   first obs. used      2004-10-08  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:41:57  

Additional Information
 Earth MOID = 1.07011 au 
 Jupiter MOID = 2.41335 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457509.5 (2016-May-01.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563653774107354 4.5595e-08  
q 2.059221084690146 1.1722e-07 au
tp 2457589.067033162903
(2016-Jul-19.56703316)
0.00013288 TDB
node 83.43614955233501 0.00020683 deg
peri 353.8883328803561 0.00020959 deg
i 2.328350868803674 5.4495e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      5526 days (15.13 yr)  
   first obs. used      2004-10-08  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:41:57  

Additional Information
 Jupiter MOID = 2.41335 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.078944785033053E-15 -5.270644811481828E-15 1.72511597775789E-12 7.402217884512461E-14 4.181617972679387E-13 -3.629661605781856E-16
q -5.270644811481828E-15 1.374077378732164E-14 -3.335292304185258E-12 -1.504385698636725E-13 -8.077804053998115E-13 1.796687471631598E-15
tp 1.72511597775789E-12 -3.335292304185258E-12 1.765790350533023E-8 4.70204322431825E-10 4.627537055387992E-9 5.04555229664049E-12
node 7.402217884512461E-14 -1.504385698636725E-13 4.70204322431825E-10 4.277937068550274E-8 -4.260896656116153E-8 4.493406741114196E-10
peri 4.181617972679387E-13 -8.077804053998115E-13 4.627537055387992E-9 -4.260896656116153E-8 4.392876066809135E-8 -4.475633005480809E-10
i -3.629661605781856E-16 1.796687471631598E-15 5.04555229664049E-12 4.493406741114196E-10 -4.475633005480809E-10 2.969732155236316E-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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