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243433 (2009 DY44)
Classification: Main-belt Asteroid          SPK-ID: 2243433
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06051902749502168 4.788e-08  
a 2.721934331912386 2.7496e-08 au
q 2.557205513239737 1.2822e-07 au
i 12.75237190157214 5.8618e-06 deg
node 90.14331943428728 2.4568e-05 deg
peri 34.85617819677003 5.7713e-05 deg
M 200.4561405721402 5.4031e-05 deg
tp 2459727.429820056123
(2022-May-27.92982006)
0.00025032 TDB
period 1640.268300883955
4.49
2.4854e-05
6.805e-08
d
yr
n .2194762892180461 3.3256e-09 deg/d
Q 2.886663150585035 2.916e-08 au
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      6554 days (17.94 yr)  
   first obs. used      2002-08-20  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:44:48  

Additional Information
 Earth MOID = 1.58277 au 
 Jupiter MOID = 2.24522 au 
 T_jup = 3.320 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457723.5 (2016-Dec-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05930193349967373 4.7506e-08  
q 2.56098701279549 1.2732e-07 au
tp 2458077.683941851930
(2017-Nov-20.18394185)
0.00024833 TDB
node 90.16784202512858 2.458e-05 deg
peri 32.95392523316183 5.9056e-05 deg
i 12.74881200549435 5.8611e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      6554 days (17.94 yr)  
   first obs. used      2002-08-20  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:44:48  

Additional Information
 Jupiter MOID = 2.24522 au 
 T_jup = 3.320 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.256829119186194E-15 -5.926436612832052E-15 3.006030491162991E-13 5.904794059569436E-15 3.674910039507204E-14 7.160298659095226E-16
q -5.926436612832052E-15 1.620917914111088E-14 1.297503929310425E-12 -1.529839489105174E-14 3.237733983250692E-13 -6.959479103431846E-16
tp 3.006030491162991E-13 1.297503929310425E-12 6.166748765063728E-8 -5.692669317537756E-12 1.336094728697821E-8 2.411708931085483E-11
node 5.904794059569436E-15 -1.529839489105174E-14 -5.692669317537756E-12 6.041707257872164E-10 -5.904396292610068E-10 -1.356642382133791E-11
peri 3.674910039507204E-14 3.237733983250692E-13 1.336094728697821E-8 -5.904396292610068E-10 3.48766345798512E-9 1.842520034887927E-11
i 7.160298659095226E-16 -6.959479103431846E-16 2.411708931085483E-11 -1.356642382133791E-11 1.842520034887927E-11 3.435221489093065E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO494332  
diameter diameter 3.337 km 1.497 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.091   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243433 (2009 DY44)          Discovered 2009-Feb-27 by Lowe, A. at Mayhill
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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