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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598791239039975 3.025e-08  
a 2.592262615247931 2.2118e-08 au
q 2.177813939393006 8.3216e-08 au
i 9.303165092009909 7.1712e-06 deg
node 312.9582179987142 2.1733e-05 deg
peri 277.6613600028106 3.4441e-05 deg
M 261.8505088619905 2.8402e-05 deg
tp 2459616.125775893152
(2022-Feb-05.62577589)
0.00012326 TDB
period 1524.46311831759
4.17
1.9511e-05
5.342e-08
d
yr
n .2361487107653342 3.0224e-09 deg/d
Q 3.006711291102855 2.5655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      9187 days (25.15 yr)  
   first obs. used      1995-12-26  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:20  

Additional Information
 Earth MOID = 1.18974 au 
 Jupiter MOID = 2.10224 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457707.5 (2016-Nov-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160685857363961 3.0213e-08  
q 2.174537039548255 8.3065e-08 au
tp 2458092.645488349828
(2017-Dec-05.14548835)
0.00011257 TDB
node 313.0149910817595 2.1732e-05 deg
peri 277.7920351661595 3.4364e-05 deg
i 9.305320460745641 7.173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      9187 days (25.15 yr)  
   first obs. used      1995-12-26  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:20  

Additional Information
 Jupiter MOID = 2.10224 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.128063952507682E-16 -2.448142852930297E-15 -3.82891552446151E-13 3.431579732860425E-15 -6.95802254965405E-14 9.646817877504342E-16
q -2.448142852930297E-15 6.899853093042097E-15 1.933782123539871E-12 -1.043419268773239E-14 3.798037060504683E-13 -1.279386532543651E-15
tp -3.82891552446151E-13 1.933782123539871E-12 1.267260176549182E-8 -2.579730856014717E-11 2.99901800341853E-9 8.021300331937921E-12
node 3.431579732860425E-15 -1.043419268773239E-14 -2.579730856014717E-11 4.722667615547915E-10 -4.716172100455431E-10 2.896075517176566E-11
peri -6.95802254965405E-14 3.798037060504683E-13 2.99901800341853E-9 -4.716172100455431E-10 1.180918410239693E-9 -2.668987213269599E-11
i 9.646817877504342E-16 -1.279386532543651E-15 8.021300331937921E-12 2.896075517176566E-11 -2.668987213269599E-11 5.145221161441899E-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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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