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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05958874457075389 5.0669e-08  
a 2.583370255748541 1.5006e-08 au
q 2.429430465447058 1.319e-07 au
i 14.61420150994207 5.1494e-06 deg
node 264.255709060768 2.2213e-05 deg
peri 160.4029960474903 4.9821e-05 deg
M 279.2276743154836 4.4943e-05 deg
tp 2459340.781623531382
(2021-May-06.28162353)
0.00018985 TDB
period 1516.625693678403
4.15
1.3215e-05
3.618e-08
d
yr
n .2373690499248111 2.0682e-09 deg/d
Q 2.737310046050025 1.5901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      7355 days (20.14 yr)  
   first obs. used      1999-07-12  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49937  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:59:49  

Additional Information
 Earth MOID = 1.44774 au 
 Jupiter MOID = 2.51074 au 
 T_jup = 3.375 
[ 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 13.9   n/a MPO302422  

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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