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91175 (1998 RX18)
Classification: Main-belt Asteroid          SPK-ID: 2091175
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2417389516969868 5.2872e-08  
a 3.123721826386495 2.5597e-08 au
q 2.368596586682826 1.7339e-07 au
i 17.17083400386184 7.9998e-06 deg
node 351.8641185007678 1.6311e-05 deg
peri 307.3292589793548 2.3617e-05 deg
M 1.222696411585384 1.5439e-05 deg
tp 2458993.651064252540
(2020-May-24.15106425)
8.6497e-05 TDB
period 2016.540529376862
5.52
2.4787e-05
6.786e-08
d
yr
n .1785235628818454 2.1944e-09 deg/d
Q 3.878847066090163 3.1785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-01-27  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52651  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:16:16  

Additional Information
 Earth MOID = 1.39652 au 
 Jupiter MOID = 1.67979 au 
 T_jup = 3.102 
[ 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 14.5   n/a MPO436409  

91175 (1998 RX18)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 RX18 = 2002 CS103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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