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JPL Small-Body Database Browser
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(2021 RQ9)
Classification: Apollo [NEO]          SPK-ID: 54195855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4625700177152086 0.00045904  
a 1.397108542308845 0.00089935 au
q .7508480191429736 0.000158 au
i 7.9334615679079 0.007245 deg
node 175.0461783335449 0.00015394 deg
peri 257.4324370119651 0.0027263 deg
M 281.7685428462642 0.086653 deg
tp 2459527.575815307960
(2021-Nov-09.07581531)
0.018622 TDB
period 603.1754389814824
1.65
0.58241
0.001595
d
yr
n .5968412782322392 0.0005763 deg/d
Q 2.043369065474717 0.0013154 au
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      8 days  
   first obs. used      2021-09-07  
   last obs. used      2021-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .32827  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-16 06:34:27  

Additional Information
 Earth MOID = .00242579 au 
 Jupiter MOID = 3.28886 au 
 T_jup = 4.634 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.431   .28834 3 autocmod 2.9e

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