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JPL Small-Body Database Browser
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268876 (2007 AU21)
Classification: Main-belt Asteroid          SPK-ID: 2268876
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418312902993195 5.6756e-08  
a 2.40167288960653 2.3358e-08 au
q 2.061040524796741 1.3421e-07 au
i 2.690308815309486 9.0025e-06 deg
node 12.26272180503217 0.00011965 deg
peri 104.0623530658567 0.00012698 deg
M 214.5798441191787 4.734e-05 deg
tp 2459549.650414235573
(2021-Dec-01.15041424)
0.00018472 TDB
period 1359.468692131138
3.72
1.9833e-05
5.43e-08
d
yr
n .2648093347671397 3.8632e-09 deg/d
Q 2.74230525441632 2.6671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      9053 days (24.79 yr)  
   first obs. used      1994-09-08  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:38:58  

Additional Information
 Earth MOID = 1.07928 au 
 Jupiter MOID = 2.34096 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456324.5 (2013-Feb-01.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414259997160785 5.6626e-08  
q 2.061739931011218 1.3409e-07 au
tp 2456828.656498921808
(2014-Jun-20.15649892)
0.00015756 TDB
node 12.45374795052203 0.00011953 deg
peri 103.5460065118958 0.00012698 deg
i 2.692142479258958 9.0075e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      9053 days (24.79 yr)  
   first obs. used      1994-09-08  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:38:58  

Additional Information
 Jupiter MOID = 2.34096 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.206492010683719E-15 -7.5108827835072E-15 4.942756580130998E-13 -2.094831966505217E-14 -3.812119706152463E-14 -2.468279757128979E-15
q -7.5108827835072E-15 1.798032981522754E-14 8.515625613692473E-13 4.723028157561118E-14 6.01593723410311E-13 5.725855953874557E-15
tp 4.942756580130998E-13 8.515625613692473E-13 2.482377756106056E-8 -4.435670522948525E-11 6.742498071348734E-9 -7.39091591014818E-12
node -2.094831966505217E-14 4.723028157561118E-14 -4.435670522948525E-11 1.428701267728386E-8 -1.428162610299011E-8 1.734244689381351E-10
peri -3.812119706152463E-14 6.01593723410311E-13 6.742498071348734E-9 -1.428162610299011E-8 1.612306260532819E-8 -1.751412656245938E-10
i -2.468279757128979E-15 5.725855953874557E-15 -7.39091591014818E-12 1.734244689381351E-10 -1.751412656245938E-10 8.113511926464777E-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 17.5   n/a MPO476136  

268876 (2007 AU21)          Discovered 2007-Jan-15 by LONEOS at Anderson Mesa
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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Alternate Designations
 2007 AU21 = 2000 GR181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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