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JPL Small-Body Database Browser
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442348 (2011 ST212)
Classification: Main-belt Asteroid          SPK-ID: 2442348
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104847628798855 3.7464e-07  
a 2.551668253101519 3.329e-08 au
q 2.284131887282508 9.7666e-07 au
i 14.18216589953389 1.2707e-05 deg
node 309.4519591729025 2.5624e-05 deg
peri 5.28662821876563 5.3571e-05 deg
M 81.27810100496889 3.6136e-05 deg
tp 2458664.371149938953
(2019-Jun-29.87114994)
0.00014993 TDB
period 1488.794454173814
4.08
2.9135e-05
7.977e-08
d
yr
n .2418063816605074 4.732e-09 deg/d
Q 2.81920461892053 3.678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      6849 days (18.75 yr)  
   first obs. used      2001-01-19  
   last obs. used      2019-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58233  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:24  

Additional Information
 Earth MOID = 1.27036 au 
 Jupiter MOID = 2.45464 au 
 T_jup = 3.390 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO495191  

442348 (2011 ST212)          Discovered 2009-Jan-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 ST212 = 2009 AR3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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