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308095 (2004 VD21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2308095
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02719645797721017 6.431e-08  
a 3.238898473224923 5.6925e-08 au
q 3.150811907005411 1.985e-07 au
i 16.02410633823255 7.0699e-06 deg
node 51.94915154267461 2.4177e-05 deg
peri 17.58431255813854 0.00015411 deg
M 224.8982047077416 0.00015836 deg
tp 2459799.511533822801
(2022-Aug-08.01153382)
0.00094609 TDB
period 2129.09200469145
5.83
5.613e-05
1.537e-07
d
yr
n .1690861640580776 4.4577e-09 deg/d
Q 3.326985039444434 5.8473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      7003 days (19.17 yr)  
   first obs. used      2000-04-06  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:14:59  

Additional Information
 Earth MOID = 2.16537 au 
 Jupiter MOID = 1.82232 au 
 T_jup = 3.123 
[ 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 15.1   n/a MPO476376  

308095 (2004 VD21)          Discovered 2004-Oct-18 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2004 VD21 = 2010 WW41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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