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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2431797425526129 3.3619e-08  
a 2.570697757840148 1.4492e-08 au
q 1.945556138908001 8.752e-08 au
i 7.398037374919094 4.9978e-06 deg
node 263.5085129962577 3.3156e-05 deg
peri 61.59902940587525 3.5677e-05 deg
M 13.72692004562519 1.6153e-05 deg
tp 2458943.095550256757
(2020-Apr-03.59555026)
6.7275e-05 TDB
period 1505.479877414582
4.12
1.273e-05
3.485e-08
d
yr
n .2391264110538904 2.022e-09 deg/d
Q 3.195839376772294 1.8016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      8162 days (22.35 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 05:53:56  

Additional Information
 Earth MOID = .946319 au 
 Jupiter MOID = 2.18844 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457383.5 (2015-Dec-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2434479678007702 3.3543e-08  
q 1.944930624029292 8.7262e-08 au
tp 2457438.978341957936
(2016-Feb-20.47834196)
6.1393e-05 TDB
node 263.5226610874161 3.317e-05 deg
peri 61.90837233029146 3.5698e-05 deg
i 7.396557839832077 4.9982e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      8162 days (22.35 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 05:53:56  

Additional Information
 Jupiter MOID = 2.18844 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.125151999703882E-15 -2.904515959821217E-15 -2.061433799137647E-13 -2.344161925012288E-15 -3.833065962151864E-15 1.094311836148911E-15
q -2.904515959821217E-15 7.614590527910005E-15 7.871054901474429E-13 5.908990841543557E-15 6.210546263558881E-14 -2.552914035733331E-15
tp -2.061433799137647E-13 7.871054901474429E-13 3.769088137068186E-9 6.278845123777317E-12 8.260199169706552E-10 1.770754305203528E-12
node -2.344161925012288E-15 5.908990841543557E-15 6.278845123777317E-12 1.100225283101511E-9 -1.0895808230108E-9 -5.487609341242089E-11
peri -3.833065962151864E-15 6.210546263558881E-14 8.260199169706552E-10 -1.0895808230108E-9 1.274367225991384E-9 5.488542897805412E-11
i 1.094311836148911E-15 -2.552914035733331E-15 1.770754305203528E-12 -5.487609341242089E-11 5.488542897805412E-11 2.498162879554242E-11

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

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