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312534 (2009 DH142)
Classification: Main-belt Asteroid          SPK-ID: 2312534
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598791218213929 3.0571e-08  
a 2.592262614818165 2.2651e-08 au
q 2.177813944430609 8.3539e-08 au
i 9.303165006591048 7.1981e-06 deg
node 312.9582173266979 2.2308e-05 deg
peri 277.6613613841138 3.4814e-05 deg
M 261.8505086545833 2.8404e-05 deg
tp 2459616.125776668084
(2022-Feb-05.62577667)		 0.00012329 TDB
period 1524.463117938484
4.17		 1.9981e-05
5.47e-08		 d
yr
n .2361487108240601 3.0952e-09 deg/d
Q 3.006711285205721 2.6273e-08 au
   Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      9155 days (25.07 yr)  
   first obs. used      1995-12-26  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:20:54  

Additional Information
 Earth MOID = 1.18974 au 
 Jupiter MOID = 2.10224 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457648.5 (2016-Sep-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606746182015462 3.053e-08  
q 2.174507119137487 8.3363e-08 au
tp 2458092.683346130225
(2017-Dec-05.18334613)		 0.0001126 TDB
node 313.0148497529148 2.2306e-05 deg
peri 277.8026992888324 3.4741e-05 deg
i 9.305406820885855 7.2e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      9155 days (25.07 yr)  
   first obs. used      1995-12-26  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:20:54  

Additional Information
 Jupiter MOID = 2.10224 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.320511987111311E-16 -2.479427734650312E-15 -3.898920543604116E-13 3.69247339511708E-15 -7.545269228202651E-14 1.046861902032121E-15
q -2.479427734650312E-15 6.949321952235482E-15 1.943459292407067E-12 -1.093884847736428E-14 3.89159983065539E-13 -1.431501801028847E-15
tp -3.898920543604116E-13 1.943459292407067E-12 1.267895474183831E-8 -2.449576957734938E-11 3.001024917411495E-9 8.16083954012281E-12
node 3.69247339511708E-15 -1.093884847736428E-14 -2.449576957734938E-11 4.975570304642639E-10 -4.962551977961749E-10 3.207916447934783E-11
peri -7.545269228202651E-14 3.89159983065539E-13 3.001024917411495E-9 -4.962551977961749E-10 1.206923151667855E-9 -2.974220579492324E-11
i 1.046861902032121E-15 -1.431501801028847E-15 8.16083954012281E-12 3.207916447934783E-11 -2.974220579492324E-11 5.183986345870276E-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 16.0   n/a MPO450244  
diameter diameter 3.673 km 0.590 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

312534 (2009 DH142)          Discovered 2009-Feb-27 by Siding Spring Survey at Siding Spring
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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