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JPL Small-Body Database Browser
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305313 (2008 AU44)
Classification: Main-belt Asteroid          SPK-ID: 2305313
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07377748857248001 6.6158e-08  
a 3.053140561451386 4.0188e-08 au
q 2.827887518568732 2.1312e-07 au
i 9.655968995113174 9.945e-06 deg
node 142.3362515310498 3.9377e-05 deg
peri 267.8570985317716 8.4618e-05 deg
M 121.3896081881053 7.422e-05 deg
tp 2457943.451188347855
(2017-Jul-08.95118835)
0.0003974 TDB
period 1948.581725613889
5.33
3.8474e-05
1.053e-07
d
yr
n .1847497568451147 3.6478e-09 deg/d
Q 3.278393604334041 4.3153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      6785 days (18.58 yr)  
   first obs. used      2000-09-05  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63446  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:52:08  

Additional Information
 Earth MOID = 1.85882 au 
 Jupiter MOID = 2.01066 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456906.5 (2014-Sep-06.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07468033512409189 6.5481e-08  
q 2.825145923257035 2.1107e-07 au
tp 2455997.954426173643
(2012-Mar-11.45442617)
0.00038373 TDB
node 142.3542891262884 3.9386e-05 deg
peri 268.6071572438155 8.4125e-05 deg
i 9.655174571143343 9.9443e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      6785 days (18.58 yr)  
   first obs. used      2000-09-05  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63446  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:52:08  

Additional Information
 Jupiter MOID = 2.01066 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.287822194637227E-15 -1.361513896849825E-14 -1.287879138076589E-11 6.199339148008479E-15 -2.595195456390319E-12 1.412852483629195E-15
q -1.361513896849825E-14 4.454844869011205E-14 4.257251511444686E-11 -1.498742370709289E-14 8.659557244949108E-12 -8.497367212629445E-16
tp -1.287879138076589E-11 4.257251511444686E-11 1.472522483580812E-7 -1.452304552075167E-10 2.854786161916151E-8 -2.850624528397659E-11
node 6.199339148008479E-15 -1.498742370709289E-14 -1.452304552075167E-10 1.551253654666518E-9 -1.55564133154572E-9 1.5447238047354E-10
peri -2.595195456390319E-12 8.659557244949108E-12 2.854786161916151E-8 -1.55564133154572E-9 7.076990169940394E-9 -1.574647161973134E-10
i 1.412852483629195E-15 -8.497367212629445E-16 -2.850624528397659E-11 1.5447238047354E-10 -1.574647161973134E-10 9.8889325633326E-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 15.9   n/a MPO433967  

305313 (2008 AU44)          Discovered 2008-Jan-10 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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