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JPL Small-Body Database Browser
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312494 (2009 AJ13)
Classification: Main-belt Asteroid          SPK-ID: 2312494
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1246617177423927 1.3822e-07  
a 2.270550417394352 3.8229e-08 au
q 1.987499702141265 3.1091e-07 au
i 6.701695272478759 8.9203e-06 deg
node 269.5456074260612 7.855e-05 deg
peri 29.55133632744816 8.7809e-05 deg
M 173.1223602647409 4.5383e-05 deg
tp 2457999.539655437122
(2017-Sep-03.03965544)
0.00015335 TDB
period 1249.669446002223
3.42
3.1561e-05
8.641e-08
d
yr
n .2880761797863141 7.2755e-09 deg/d
Q 2.553601132647439 4.2995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      5161 days (14.13 yr)  
   first obs. used      2004-11-09  
   last obs. used      2018-12-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59969  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:43:32  

Additional Information
 Earth MOID = .973952 au 
 Jupiter MOID = 2.62103 au 
 T_jup = 3.594 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456583.5 (2013-Oct-18.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1254473762885059 1.3855e-07  
q 1.985519378748351 3.1204e-07 au
tp 2456749.479930643470
(2014-Apr-01.97993064)
0.00014842 TDB
node 269.6358787254002 7.8535e-05 deg
peri 29.37963658615986 8.7674e-05 deg
i 6.702739029850423 8.9229e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      5161 days (14.13 yr)  
   first obs. used      2004-11-09  
   last obs. used      2018-12-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59969  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:43:32  

Additional Information
 Jupiter MOID = 2.62103 au 
 T_jup = 3.594 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.919505811088249E-14 -4.298912507206065E-14 1.036610326728353E-11 -6.847664638069237E-14 1.809651980580256E-12 -4.093216644385955E-14
q -4.298912507206065E-14 9.736616336984085E-14 -2.34293571814143E-11 1.716912612726678E-13 -4.173726156097157E-12 9.495470098266177E-14
tp 1.036610326728353E-11 -2.34293571814143E-11 2.202985468783889E-8 -1.513839142548345E-10 5.759852709385644E-9 -6.227831363331293E-11
node -6.847664638069237E-14 1.716912612726678E-13 -1.513839142548345E-10 6.167725407281021E-9 -6.162780430399094E-9 9.813899178558698E-11
peri 1.809651980580256E-12 -4.173726156097157E-12 5.759852709385644E-9 -6.162780430399094E-9 7.686742381633502E-9 -1.123900992987893E-10
i -4.093216644385955E-14 9.495470098266177E-14 -6.227831363331293E-11 9.813899178558698E-11 -1.123900992987893E-10 7.961845693553544E-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 17.1   n/a MPO471271  

312494 (2009 AJ13)          Discovered 2009-Jan-02 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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