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JPL Small-Body Database Browser
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(2021 RR4)
Classification: Amor [NEO]          SPK-ID: 54193838
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3520622867106019 0.00070035  
a 1.578628379002332 0.0017702 au
q 1.02285286202452 4.1362e-05 au
i 5.844001953768307 0.0090488 deg
node 170.8271033001097 0.00036254 deg
peri 203.3003437420233 0.0039259 deg
M 312.4060978436497 0.083805 deg
tp 2459492.278294262338
(2021-Oct-04.77829426)
0.0075528 TDB
period 724.4664625558767
1.98
1.2185
0.003336
d
yr
n .4969174124775085 0.00083581 deg/d
Q 2.134403895980143 0.0023934 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      17 days  
   first obs. used      2021-08-30  
   last obs. used      2021-09-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33788  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-16 06:34:24  

Additional Information
 Earth MOID = .0318135 au 
 Jupiter MOID = 3.33106 au 
 T_jup = 4.322 
[ 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 26.891   .35376 4 autocmod 2.9e

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