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487985 (2015 TO322)
Classification: Main-belt Asteroid          SPK-ID: 2487985
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05519994022645027 8.4102e-08  
a 2.70862563565088 8.9629e-08 au
q 2.559109662467121 2.9249e-07 au
i 4.140565273411693 6.5575e-06 deg
node 69.08275812121917 0.00011139 deg
peri 22.53518281589901 0.00021082 deg
M 305.8557428710364 0.00019702 deg
tp 2459245.390423541397
(2021-Jan-30.89042354)
0.00090227 TDB
period 1628.25306227616
4.46
8.0819e-05
2.213e-07
d
yr
n .2210958531819068 1.0974e-08 deg/d
Q 2.85814160883464 9.4576e-08 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      4266 days (11.68 yr)  
   first obs. used      2008-01-20  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59558  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 18:49:17  

Additional Information
 Earth MOID = 1.57624 au 
 Jupiter MOID = 2.24185 au 
 T_jup = 3.358 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457601.5 (2016-Aug-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05334080791785317 8.6262e-08  
q 2.564487512770698 3.0028e-07 au
tp 2457609.123133962246
(2016-Aug-08.62313396)
0.00085398 TDB
node 69.10721174858833 0.00011147 deg
peri 20.97467008543588 0.00021564 deg
i 4.139849015919022 6.5565e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      4266 days (11.68 yr)  
   first obs. used      2008-01-20  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59558  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 18:49:17  

Additional Information
 Jupiter MOID = 2.24185 au 
 T_jup = 3.358 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.441091786919219E-15 -2.537048628622748E-14 -4.926266168978123E-11 -5.898711704790976E-14 -1.042609825093061E-11 -1.521202134837444E-14
q -2.537048628622748E-14 9.017038080922604E-14 1.994119800429706E-10 2.198461131623186E-13 4.244350121692444E-11 6.224381786483856E-14
tp -4.926266168978123E-11 1.994119800429706E-10 7.292842078214509E-7 6.058661202391994E-10 1.577071328011853E-7 2.209052441364751E-10
node -5.898711704790976E-14 2.198461131623186E-13 6.058661202391994E-10 1.242521583582092E-8 -1.226227924286034E-8 -1.875083171492352E-10
peri -1.042609825093061E-11 4.244350121692444E-11 1.577071328011853E-7 -1.226227924286034E-8 4.650171894042849E-8 2.349749116070211E-10
i -1.521202134837444E-14 6.224381786483856E-14 2.209052441364751E-10 -1.875083171492352E-10 2.349749116070211E-10 4.298756841611334E-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 17.1   n/a MPO450511  

487985 (2015 TO322)          Discovered 2008-Jan-20 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 TO322 = 2011 WJ127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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