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212337 (2005 SD273)
Classification: Outer Main-belt Asteroid          SPK-ID: 2212337
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571897354246571 6.176e-08  
a 3.984351889474155 5.945e-08 au
q 3.35805267012898 2.427e-07 au
i .8610848367506908 6.3987e-06 deg
node 39.12078381523516 0.00048457 deg
peri 253.6225076859538 0.00048532 deg
M 32.04035174264716 2.511e-05 deg
tp 2458741.958816569446
(2019-Sep-15.45881657)
0.00020287 TDB
period 2904.925226245652
7.95
6.5016e-05
1.78e-07
d
yr
n .1239274583550182 2.7736e-09 deg/d
Q 4.610651108819329 6.8795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      6804 days (18.63 yr)  
   first obs. used      2002-03-16  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:01:41  

Additional Information
 Earth MOID = 2.34205 au 
 Jupiter MOID = .595546 au 
 T_jup = 3.034 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457789.5 (2017-Feb-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1628187937229212 6.0634e-08  
q 3.331832274054128 2.4375e-07 au
tp 2458753.687075714285
(2019-Sep-27.18707571)
0.00019681 TDB
node 39.26912723627321 0.00047584 deg
peri 255.8902129330795 0.00047648 deg
i .875553691358254 6.4501e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      6804 days (18.63 yr)  
   first obs. used      2002-03-16  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:01:41  

Additional Information
 Jupiter MOID = .595546 au 
 T_jup = 3.034 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.676480225153342E-15 -1.447259799596082E-14 6.980609648261835E-12 3.692268712246936E-16 7.57507736718446E-13 -3.457977016589393E-16
q -1.447259799596082E-14 5.941343111540879E-14 -2.946374878438552E-11 -4.950800389012253E-14 -3.293350185810355E-12 2.099042852600932E-15
tp 6.980609648261835E-12 -2.946374878438552E-11 3.873447677977747E-8 -3.017020717848678E-10 5.074495897914174E-9 5.674781456422947E-14
node 3.692268712246936E-16 -4.950800389012253E-14 -3.017020717848678E-10 2.264216643166179E-7 -2.264214480995337E-7 -1.531756939303846E-9
peri 7.57507736718446E-13 -3.293350185810355E-12 5.074495897914174E-9 -2.264214480995337E-7 2.270372922489056E-7 1.531514828910915E-9
i -3.457977016589393E-16 2.099042852600932E-15 5.674781456422947E-14 -1.531756939303846E-9 1.531514828910915E-9 4.160419332576474E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO440125  

212337 (2005 SD273)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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