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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1050298133282017 3.7466e-07  
a 2.551887680115521 3.3293e-08 au
q 2.28386339343845 9.7667e-07 au
i 14.1811057338238 1.2706e-05 deg
node 309.4540787062312 2.5627e-05 deg
peri 5.174589821395212 5.3368e-05 deg
M 344.6445095629308 3.6178e-05 deg
tp 2458664.011438713544
(2019-Jun-29.51143871)
0.0001495 TDB
period 1488.986498384994
4.08
2.9139e-05
7.978e-08
d
yr
n .2417751943288058 4.7315e-09 deg/d
Q 2.819911966792592 3.679e-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 = 1.26923 au 
 Jupiter MOID = 2.45145 au 
 T_jup = 3.389 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457746.5 (2016-Dec-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058872217316204 3.7337e-07  
q 2.281094518980948 9.745e-07 au
tp 2457176.636691620388
(2015-Jun-03.13669162)
0.00015385 TDB
node 309.5269850351524 2.5625e-05 deg
peri 5.459301156893549 5.33e-05 deg
i 14.17954601007893 1.2708e-05 deg
  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
 Jupiter MOID = 2.45145 au 
 T_jup = 3.389 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.394054906051746E-13 -3.637606330014315E-13 2.171712057498267E-12 -7.926801951212701E-14 -6.946526675132191E-12 -8.481897288402826E-13
q -3.637606330014315E-13 9.496588838550169E-13 -6.889523398424192E-12 2.115642902318093E-13 1.782756771866579E-11 2.220981293762264E-12
tp 2.171712057498267E-12 -6.889523398424192E-12 2.366942214907006E-8 -3.563241841454586E-11 6.511325906565496E-9 -8.137200913790793E-11
node -7.926801951212701E-14 2.115642902318093E-13 -3.563241841454586E-11 6.56627402427558E-10 -6.411245321639027E-10 1.989997263594583E-10
peri -6.946526675132191E-12 1.782756771866579E-11 6.511325906565496E-9 -6.411245321639027E-10 2.840939181595816E-9 -1.690015977316975E-10
i -8.481897288402826E-13 2.220981293762264E-12 -8.137200913790793E-11 1.989997263594583E-10 -1.690015977316975E-10 1.614810181290422E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a E2014D50  

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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