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181818 (1998 RX58)
Classification: Main-belt Asteroid          SPK-ID: 2181818
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2494368191428242 3.4638e-08  
a 2.418284580895325 9.5732e-09 au
q 1.815075367254657 8.4951e-08 au
i 1.68752613726559 3.4648e-06 deg
node 322.953468856817 0.00015806 deg
peri 26.8575824066923 0.00015827 deg
M 334.7600625432257 9.1851e-06 deg
tp 2459296.804218363038
(2021-Mar-23.30421836)
3.5345e-05 TDB
period 1373.597643420007
3.76
8.1564e-06
2.233e-08
d
yr
n .2620854816725411 1.5563e-09 deg/d
Q 3.021493794535993 1.1961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      7974 days (21.83 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:10  

Additional Information
 Earth MOID = .807395 au 
 Jupiter MOID = 2.41342 au 
 T_jup = 3.471 
[ 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 16.68   n/a E2021B55  

181818 (1998 RX58)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1998 RX58 = 2000 CK135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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