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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009036501016833093 6.0488e-08  
a 2.918349699255259 1.8272e-08 au
q 2.891978029230464 1.808e-07 au
i 2.223566432781303 8.7705e-06 deg
node 3.642987008706065 8.841e-05 deg
peri 54.17128287823164 0.00044911 deg
M 359.1610198227327 0.00043921 deg
tp 2459004.743787435927
(2020-Jun-04.24378744)
0.0022217 TDB
period 1820.976845853605
4.99
1.7102e-05
4.682e-08
d
yr
n .1976960886788462 1.8567e-09 deg/d
Q 2.944721369280054 1.8438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      10451 days (28.61 yr)  
   first obs. used      1992-03-30  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:14:17  

Additional Information
 Earth MOID = 1.90036 au 
 Jupiter MOID = 2.05645 au 
 T_jup = 3.280 
[ 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 14.7   n/a MPO449103  

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

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