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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600470542181183 3.3003e-08  
a 2.591986009501015 2.6527e-08 au
q 2.177146284105802 8.6026e-08 au
i 9.302964594611284 7.6527e-06 deg
node 312.9594103793671 2.5257e-05 deg
peri 277.6691275975105 3.7198e-05 deg
M 214.6219256974136 2.8063e-05 deg
tp 2459616.022336491633
(2022-Feb-05.52233649)		 0.00012335 TDB
period 1524.219124513783
4.17		 2.3399e-05
6.406e-08		 d
yr
n .236186512956159 3.6258e-09 deg/d
Q 3.006825734896228 3.0772e-08 au
   Orbit Determination Parameters
   # obs. used (total)      301  
   data-arc span      9087 days (24.88 yr)  
   first obs. used      1995-12-26  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:11:03  

Additional Information
 Earth MOID = 1.19032 au 
 Jupiter MOID = 2.10326 au 
 T_jup = 3.383 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457351.5 (2015-Nov-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160469943830213 3.2931e-08  
q 2.175349119597471 8.5778e-08 au
tp 2458092.856653597165
(2017-Dec-05.35665360)		 0.00011307 TDB
node 313.0192001061098 2.525e-05 deg
peri 277.7960102797183 3.7184e-05 deg
i 9.304947449989665 7.6553e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      301  
   data-arc span      9087 days (24.88 yr)  
   first obs. used      1995-12-26  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:11:03  

Additional Information
 Jupiter MOID = 2.10326 au 
 T_jup = 3.383 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.084483098576944E-15 -2.72943887110669E-15 -4.735215314928202E-13 6.736216448199525E-15 -1.299719416937073E-13 2.139703522240344E-15
q -2.72943887110669E-15 7.357780124861207E-15 2.076657570896418E-12 -2.068842071550708E-14 4.823009825078606E-13 -4.383368088847306E-15
tp -4.735215314928202E-13 2.076657570896418E-12 1.278460452049407E-8 -6.416289258437086E-11 3.082252259180307E-9 -9.211021895080993E-13
node 6.736216448199525E-15 -2.068842071550708E-14 -6.416289258437086E-11 6.3756916220338E-10 -6.439351668602019E-10 6.247991838551819E-11
peri -1.299719416937073E-13 4.823009825078606E-13 3.082252259180307E-9 -6.439351668602019E-10 1.382652531653839E-9 -6.199878401295386E-11
i 2.139703522240344E-15 -4.383368088847306E-15 -9.211021895080993E-13 6.247991838551819E-11 -6.199878401295386E-11 5.860344770892633E-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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