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18984 Olathe (2000 RA8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0297834857427383 4.007e-08  
a 3.251536973143611 2.2386e-08 au
q 3.154694868062002 1.3176e-07 au
i 14.05768098524077 5.0684e-06 deg
node 321.6049007036863 1.6277e-05 deg
peri 249.2565183273799 8.6942e-05 deg
M 282.1784784076999 8.711e-05 deg
tp 2459463.444244560850
(2021-Sep-05.94424456)
0.00051883 TDB
period 2141.566042810398
5.86
2.2116e-05
6.055e-08
d
yr
n .1681012832681865 1.736e-09 deg/d
Q 3.34837907822522 2.3053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1644  
   data-arc span      16591 days (45.42 yr)  
   first obs. used      1975-06-01  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48075  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:09:37  

Additional Information
 Earth MOID = 2.1857 au 
 Jupiter MOID = 1.72565 au 
 T_jup = 3.133 
[ 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 12.9   n/a MPO337418  
diameter diameter 17.629 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18984 Olathe           Discovered 2000 Sept. 2 by L. Robinson at the Sunflower Observatory.
O-Lay'-tha is the old Shawnee word for "Beautiful". The township of Olathe, Kansas, was established in 1857 and later became a stop along the Santa Fe Trail. It is the site of the Sunflower Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 2000 RA8 = 1975 LG1 = 1994 RS11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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