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129149 Richwitherspoon (2005 EP51)
Classification: Main-belt Asteroid          SPK-ID: 2129149
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06073706708686439 3.975e-08  
a 2.600629318555359 1.674e-08 au
q 2.442674721166195 9.9062e-08 au
i 1.664434166544943 4.5493e-06 deg
node 147.610814382489 0.00017342 deg
peri 138.1181670810029 0.00018054 deg
M 122.2496588222176 4.9388e-05 deg
tp 2458480.310881371159
(2018-Dec-27.81088137)
0.00021023 TDB
period 1531.849532428706
4.19
1.4791e-05
4.05e-08
d
yr
n .2350100270156623 2.2691e-09 deg/d
Q 2.758583915944522 1.7757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      6827 days (18.69 yr)  
   first obs. used      2001-03-17  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5541  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 10:34:50  

Additional Information
 Earth MOID = 1.42658 au 
 Jupiter MOID = 2.31791 au 
 T_jup = 3.412 
[ 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 16.1   n/a MPO348251  

129149 Richwitherspoon           Discovered 2005 Mar. 3 by the Catalina Sky Survey.
Richard A. Witherspoon (b. 1981) is the Lockheed Martin lead electrical test conductor for the OSIRIS-REx Asteroid Sample Return Mission. He also worked at Surrey Spacecraft Technologies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-08-18Last Updated: 2016-08-22

[ show close-approach data ]
Alternate Designations
 2005 EP51 = 2002 PS137 = 2003 XR37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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