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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03324237686019169 6.4394e-08  
a 2.630592844335366 2.8231e-08 au
q 2.543145685638246 1.8564e-07 au
i 11.60725985449604 8.6786e-06 deg
node 335.8578256899533 2.0936e-05 deg
peri 248.707484641367 0.00012361 deg
M 282.223169799197 0.00012171 deg
tp 2459537.187208757602
(2021-Nov-18.68720876)
0.00052785 TDB
period 1558.399781011972
4.27
2.5087e-05
6.868e-08
d
yr
n .2310061926255073 3.7187e-09 deg/d
Q 2.718040003032486 2.917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      253  
   data-arc span      8641 days (23.66 yr)  
   first obs. used      1997-08-12  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:50:49  

Additional Information
 Earth MOID = 1.56203 au 
 Jupiter MOID = 2.30023 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457908.5 (2017-Jun-04.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03440977924746724 6.41e-08  
q 2.540621548283578 1.8536e-07 au
tp 2457980.241395513844
(2017-Aug-14.74139551)
0.0005083 TDB
node 335.9115625106484 2.0927e-05 deg
peri 248.9417317297379 0.00012008 deg
i 11.6089247888377 8.6804e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      253  
   data-arc span      8641 days (23.66 yr)  
   first obs. used      1997-08-12  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:50:49  

Additional Information
 Jupiter MOID = 2.30023 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.108754778760605E-15 -1.179108457611803E-14 -2.009277760031613E-11 2.35331576168576E-14 -4.647132533998006E-12 -3.557861577500394E-15
q -1.179108457611803E-14 3.435937836857512E-14 5.502995305914654E-11 -6.534519850098864E-14 1.271478146372948E-11 1.047700151804141E-14
tp -2.009277760031613E-11 5.502995305914654E-11 2.583655425344363E-7 -2.077271259946826E-10 6.011191955331443E-8 4.182451142968846E-11
node 2.35331576168576E-14 -6.534519850098864E-14 -2.077271259946826E-10 4.379279585922592E-10 -4.763688613189397E-10 5.075170457166535E-11
peri -4.647132533998006E-12 1.271478146372948E-11 6.011191955331443E-8 -4.763688613189397E-10 1.441854079496094E-8 -3.987563380893747E-11
i -3.557861577500394E-15 1.047700151804141E-14 4.182451142968846E-11 5.075170457166535E-11 -3.987563380893747E-11 7.534964845071777E-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 16.55   n/a MPCxxxxx  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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