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469591 (2004 DU21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2469591
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3675429220312675 9.1881e-08  
a 3.210736412914083 1.5106e-07 au
q 2.030652969839451 3.5689e-07 au
i 20.2087476689481 1.1295e-05 deg
node 179.5099500319386 5.1373e-05 deg
peri 338.3227882910008 0.00014026 deg
M 301.3135834153142 0.00012627 deg
tp 2459343.063035515365
(2021-May-08.56303552)
0.00076094 TDB
period 2101.383931110768
5.75
0.0001483
4.06e-07
d
yr
n .1713156718628319 1.209e-08 deg/d
Q 4.390819855988716 2.0659e-07 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      4522 days (12.38 yr)  
   first obs. used      2004-02-17  
   last obs. used      2016-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63149  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:31:13  

Additional Information
 Earth MOID = 1.04975 au 
 Jupiter MOID = .720611 au 
 T_jup = 2.992 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO179262  
diameter diameter 1.678 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.091   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

469591 (2004 DU21)          Discovered 2004-Feb-17 by CSS at Catalina
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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