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JPL Small-Body Database Browser
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66539 (1999 RX117)
Classification: Main-belt Asteroid          SPK-ID: 2066539
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2431797608879038 3.6636e-08  
a 2.570697745569286 1.6742e-08 au
q 1.945556082486674 9.7871e-08 au
i 7.398036184939034 5.1981e-06 deg
node 263.5085141833549 3.3173e-05 deg
peri 61.59901751649874 3.6508e-05 deg
M 13.72693632415674 1.9834e-05 deg
tp 2458943.095482592771
(2020-Apr-03.59548259)
8.2557e-05 TDB
period 1505.47986663529
4.12
1.4707e-05
4.027e-08
d
yr
n .2391264127660444 2.336e-09 deg/d
Q 3.195839408651899 2.0814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      7766 days (21.26 yr)  
   first obs. used      1998-03-31  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:58:49  

Additional Information
 Earth MOID = .946319 au 
 Jupiter MOID = 2.18844 au 
 T_jup = 3.376 
[ show covariance matrix ]

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 14.9   n/a MPO436246  

66539 (1999 RX117)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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