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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6976248569873523 3.5403e-08  
a 2.17223301164665 1.3707e-08 au
q .6568292675534501 7.586e-08 au
i 17.53957661106314 6.2272e-06 deg
node 224.1918393459427 3.9096e-05 deg
peri 353.4023762103661 4.3e-05 deg
M 127.2598906597972 1.0738e-05 deg
tp 2458983.122260543556
(2020-May-13.62226054)
3.2545e-05 TDB
period 1169.386406296297
3.20
1.1069e-05
3.031e-08
d
yr
n .3078537582288125 2.914e-09 deg/d
Q 3.68763675573985 2.327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      5895 days (16.14 yr)  
   first obs. used      2004-08-26  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5324  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-19 06:20:15  

Additional Information
 Earth MOID = .284954 au 
 Jupiter MOID = 1.30652 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458571.5 (2019-Mar-29.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6977198469676479 3.5034e-08  
q .6569961820920982 7.5924e-08 au
tp 2458983.102971603997
(2020-May-13.60297160)
3.2551e-05 TDB
node 224.2177463250602 3.9083e-05 deg
peri 353.4167814348596 4.3005e-05 deg
i 17.53941765290375 6.2132e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      5895 days (16.14 yr)  
   first obs. used      2004-08-26  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5324  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-19 06:20:15  

Additional Information
 Jupiter MOID = 1.30652 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.227388334448249E-15 -2.657233821479304E-15 3.593179339616831E-13 -2.758608721102916E-13 2.602583784738175E-13 -7.297656917771713E-15
q -2.657233821479304E-15 5.764420720835997E-15 -7.632774916961234E-13 5.889113735683551E-13 -5.536109880228208E-13 1.478340558014127E-14
tp 3.593179339616831E-13 -7.632774916961234E-13 1.059592363081501E-9 -6.135822297376746E-10 9.053096212104744E-10 -1.13856579384358E-10
node -2.758608721102916E-13 5.889113735683551E-13 -6.135822297376746E-10 1.527512415659489E-9 -1.63163270627633E-9 1.911817004015902E-11
peri 2.602583784738175E-13 -5.536109880228208E-13 9.053096212104744E-10 -1.63163270627633E-9 1.84938811133634E-9 -5.498746512317525E-11
i -7.297656917771713E-15 1.478340558014127E-14 -1.13856579384358E-10 1.911817004015902E-11 -5.498746512317525E-11 3.860380087161143E-11

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 18.12   n/a E2021B25  

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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