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JPL Small-Body Database Browser
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(2021 RU1)
Classification: Apollo [NEO]          SPK-ID: 54192204
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .319408033308817 0.00040235  
a 1.493070767872569 0.00090405 au
q 1.016171970315506 1.4557e-05 au
i 4.016459821394979 0.0040423 deg
node 175.1244810643918 0.00097865 deg
peri 187.9410771731946 0.0033931 deg
M 314.0546274694842 0.044086 deg
tp 2459481.546861685196
(2021-Sep-24.04686169)
0.0043841 TDB
period 666.3754915978891
1.82
0.60523
0.001657
d
yr
n .5402359548619695 0.00049067 deg/d
Q 1.969969565429631 0.0011928 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      6 days  
   first obs. used      2021-09-06  
   last obs. used      2021-09-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .39141  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-13 05:49:16  

Additional Information
 Earth MOID = .0132241 au 
 Jupiter MOID = 3.48849 au 
 T_jup = 4.498 
[ 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 26.872   .29414 5 autocmod 2.9e

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