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20609 (1999 RO225)
Classification: Main-belt Asteroid          SPK-ID: 2020609
[ 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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00927147440816424 4.9326e-08  
a 2.919019714141088 1.7093e-08 au
q 2.891956097564502 1.4455e-07 au
i 2.223491263514208 6.9384e-06 deg
node 3.63691885793307 8.7952e-05 deg
peri 54.17948645640332 0.00037415 deg
M 38.68268413014719 0.00036134 deg
tp 2459004.765189513210
(2020-Jun-04.26518951)		 0.0018287 TDB
period 1821.603990513373
4.99		 1.6e-05
4.381e-08		 d
yr
n .1976280255614411 1.7359e-09 deg/d
Q 2.946083330717674 1.7252e-08 au
   Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      10573 days (28.95 yr)  
   first obs. used      1992-03-30  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:57  

Additional Information
 Earth MOID = 1.89914 au 
 Jupiter MOID = 2.05517 au 
 T_jup = 3.279 
[ 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 14.73   n/a E2021B10  

20609 (1999 RO225)          Discovered 1999-Sep-03 by Spacewatch at Kitt Peak
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RO225 = 1999 SF24 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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