Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 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 
[ 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 = 2.45464 au 
 T_jup = 3.390 
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 17.2   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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-20 15:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin