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312349 (2008 DE4)
Classification: Main-belt Asteroid          SPK-ID: 2312349
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03324237801120299 6.4577e-08  
a 2.630592845021551 2.8499e-08 au
q 2.543145683273778 1.8587e-07 au
i 11.60725995473111 8.6892e-06 deg
node 335.8578242441529 2.1356e-05 deg
peri 248.7074856060103 0.00012364 deg
M 282.2231699875545 0.00012173 deg
tp 2459537.187208073960
(2021-Nov-18.68720807)
0.00052794 TDB
period 1558.399781621731
4.27
2.5324e-05
6.933e-08
d
yr
n .2310061925351209 3.7539e-09 deg/d
Q 2.718040006769324 2.9446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      8616 days (23.59 yr)  
   first obs. used      1997-08-12  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:29:37  

Additional Information
 Earth MOID = 1.56203 au 
 Jupiter MOID = 2.30023 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457848.5 (2017-Apr-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03447031553031323 6.4167e-08  
q 2.540513034775756 1.8528e-07 au
tp 2457980.847454936434
(2017-Aug-15.34745494)
0.00050845 TDB
node 335.9197774635817 2.1341e-05 deg
peri 249.0849771136201 0.00012012 deg
i 11.61064355022032 8.6919e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      8616 days (23.59 yr)  
   first obs. used      1997-08-12  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:29:37  

Additional Information
 Jupiter MOID = 2.30023 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.11737986376534E-15 -1.179380797663477E-14 -2.006405593030261E-11 1.981336322762999E-14 -4.640372157465393E-12 -3.125706558150141E-15
q -1.179380797663477E-14 3.432828227128748E-14 5.493367102742608E-11 -5.383926160623802E-14 1.268789234532965E-11 9.483004461119632E-15
tp -2.006405593030261E-11 5.493367102742608E-11 2.585200066224012E-7 -1.74982849724548E-10 6.011332713923332E-8 3.778718238009745E-11
node 1.981336322762999E-14 -5.383926160623802E-14 -1.74982849724548E-10 4.554411979667504E-10 -4.85977371869573E-10 4.902991324766459E-11
peri -4.640372157465393E-12 1.268789234532965E-11 6.011332713923332E-8 -4.85977371869573E-10 1.44283751489115E-8 -3.914465610268785E-11
i -3.125706558150141E-15 9.483004461119632E-15 3.778718238009745E-11 4.902991324766459E-11 -3.914465610268785E-11 7.554890678023814E-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 16.4   n/a MPO455302  
diameter diameter 3.270 km 1.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

312349 (2008 DE4)          Discovered 2008-Feb-26 by Sarneczky, K. at Piszkesteto
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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