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66609 (1999 RW198)
Classification: Main-belt Asteroid          SPK-ID: 2066609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05965089457180287 4.5974e-08  
a 2.583063251618638 1.1378e-08 au
q 2.428981217924037 1.2355e-07 au
i 14.61418327300552 3.4747e-06 deg
node 264.2541652663148 2.1634e-05 deg
peri 160.5694495145928 4.8768e-05 deg
M 326.5561269487002 4.3165e-05 deg
tp 2459341.368877403947
(2021-May-06.86887740)
0.00018184 TDB
period 1516.355351176949
4.15
1.0019e-05
2.743e-08
d
yr
n .2374113691230614 1.5686e-09 deg/d
Q 2.73714528531324 1.2056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1739  
   data-arc span      7909 days (21.65 yr)  
   first obs. used      1999-07-12  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43616  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:44  

Additional Information
 Earth MOID = 1.44676 au 
 Jupiter MOID = 2.5108 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 14.05   n/a E2021B10  

66609 (1999 RW198)          Discovered 1999-Sep-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RW198 = 2000 ST160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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