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19685 (1999 RB197)
Classification: Main-belt Asteroid          SPK-ID: 2019685
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08094035569614026 2.3461e-08  
a 2.969342247815049 1.5725e-08 au
q 2.729002630093322 7.2429e-08 au
i 12.32406143333712 8.3407e-07 deg
node 322.1992544161245 7.6773e-06 deg
peri 215.4403225570757 2.0047e-05 deg
M 268.5419924749267 2.0681e-05 deg
tp 2459871.297089484829
(2022-Oct-18.79708948)		 0.00010913 TDB
period 1868.91183002952
5.12		 1.4846e-05
4.065e-08		 d
yr
n .1926254594869324 1.5301e-09 deg/d
Q 3.209681865536776 1.6997e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2340  
   data-arc span      18308 days (50.12 yr)  
   first obs. used      1971-02-18  
   last obs. used      2021-04-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:14:30  

Additional Information
 Earth MOID = 1.74562 au 
 Jupiter MOID = 1.82442 au 
 T_jup = 3.224 
[ 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 12.90   n/a E2021B10  

19685 (1999 RB197)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RB197 = 1971 DG = 1981 AQ3 = 1989 SU12 = 2000 AR228 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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