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20583 Richthammer (1999 RK158)
Classification: Main-belt Asteroid          SPK-ID: 2020583
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06225841501704498 3.07e-08  
a 2.875120055450999 1.5243e-08 au
q 2.696119637814901 8.7358e-08 au
i 3.123755000684102 3.4709e-06 deg
node 111.8891757443664 8.276e-05 deg
peri 163.2125860341877 9.3408e-05 deg
M 193.0708896537456 4.5083e-05 deg
tp 2460026.180410674194
(2023-Mar-22.68041067)
0.00022436 TDB
period 1780.665740242348
4.88
1.4161e-05
3.877e-08
d
yr
n .2021715765424925 1.6078e-09 deg/d
Q 3.054120473087096 1.6192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      11068 days (30.30 yr)  
   first obs. used      1990-11-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54534  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:31  

Additional Information
 Earth MOID = 1.67807 au 
 Jupiter MOID = 2.00751 au 
 T_jup = 3.291 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.56   n/a E2021B10  

20583 Richthammer           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
James Richthammer mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the Aquinas Academy of Pittsburgh, Gibsonia, Pennsylvania.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RK158 = 1997 ED35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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