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JPL Small-Body Database Browser
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(2021 RX9)
Classification: Apollo [NEO]          SPK-ID: 54195862
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 2459468.5 (2021-Sep-11.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5756876181528381 0.00745  
a 1.866738209557739 0.029795 au
q .7920801359825504 0.0013135 au
i 3.511341531066653 0.039714 deg
node 173.1859516671105 0.01154 deg
peri 251.7852687543501 0.075871 deg
M 338.8764210892018 0.58307 deg
tp 2459523.162382020313
(2021-Nov-04.66238202)
0.20019 TDB
period 931.5872850150976
2.55
22.304
0.06107
d
yr
n .3864372193467258 0.0092519 deg/d
Q 2.941396283132927 0.046948 au
  Orbit Determination Parameters
   # obs. used (total)      14  
   data-arc span      1 day  
   first obs. used      2021-09-10  
   last obs. used      2021-09-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .40566  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-12 08:12:03  

Additional Information
 Earth MOID = .00724133 au 
 Jupiter MOID = 2.4155 au 
 T_jup = 3.765 
[ 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 25.932   .26424 1 autocmod 2.9e

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