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497135 (2004 QD20)
Classification: Apollo [NEO]          SPK-ID: 2497135
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 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6976176828156124 3.5466e-08  
a 2.173350105748026 1.4162e-08 au
q .6571826410290219 7.5965e-08 au
i 17.5362085767532 6.2252e-06 deg
node 224.2083504275355 3.9136e-05 deg
peri 353.4154917997382 4.3072e-05 deg
M 5.338254063217227 1.008e-05 deg
tp 2458983.146395142777
(2020-May-13.64639514)
3.2666e-05 TDB
period 1170.288576492968
3.20
1.1438e-05
3.132e-08
d
yr
n .3076164351521065 3.0067e-09 deg/d
Q 3.68951757046703 2.4041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      5895 days (16.14 yr)  
   first obs. used      2004-08-26  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53419  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-17 08:42:32  

Additional Information
 Earth MOID = .28466 au 
 Jupiter MOID = 1.30694 au 
 T_jup = 3.277 
[ 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 18.1   n/a E2016-UA7  

497135 (2004 QD20)          Discovered 2004-Aug-26 by LINEAR at Socorro
Reference: Last Updated: 2017-10-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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