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55905 (1998 DD3)
Classification: Main-belt Asteroid          SPK-ID: 2055905
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2186349923259031 4.1108e-08  
a 3.033895473919166 2.0782e-08 au
q 2.370579760261257 1.2129e-07 au
i 7.843623651162311 5.8419e-06 deg
node 319.9117138316437 3.4229e-05 deg
peri 130.5314342418564 3.7286e-05 deg
M 148.4240426133736 1.3785e-05 deg
tp 2458404.705188150625
(2018-Oct-13.20518815)
7.1048e-05 TDB
period 1930.186829717582
5.28
1.9832e-05
5.43e-08
d
yr
n .1865104426459453 1.9163e-09 deg/d
Q 3.697211187577075 2.5325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      8651 days (23.69 yr)  
   first obs. used      1996-10-09  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:01:45  

Additional Information
 Earth MOID = 1.39578 au 
 Jupiter MOID = 1.54757 au 
 T_jup = 3.191 
[ show covariance matrix ]

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 14.84   n/a E2021B10  
diameter diameter 6.555 km 0.554 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

55905 (1998 DD3)          Discovered 1998-Feb-21 by Klet at Klet
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 DD3 = 2001 QG62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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