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101722 Pursell (1999 EX4)
Classification: Main-belt Asteroid          SPK-ID: 2101722
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912911621565886 4.2264e-08  
a 3.130346236888679 2.1395e-08 au
q 2.531538667281739 1.3473e-07 au
i 21.17793683338106 6.4044e-06 deg
node 6.198076964982532 1.2601e-05 deg
peri 69.22967504225147 2.3598e-05 deg
M 23.85745326929234 1.6306e-05 deg
tp 2458866.437111633054
(2020-Jan-17.93711163)
9.1618e-05 TDB
period 2022.958581007505
5.54
2.074e-05
5.678e-08
d
yr
n .1779571778581385 1.8244e-09 deg/d
Q 3.729153806495618 2.5488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      7896 days (21.62 yr)  
   first obs. used      1999-03-10  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46389  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:51  

Additional Information
 Earth MOID = 1.62727 au 
 Jupiter MOID = 1.98941 au 
 T_jup = 3.082 
[ 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 13.9   n/a MPO270554  
diameter diameter 9.964 km 0.256 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101722 Pursell           Discovered 1999 Mar. 10 by W. R. Cooney Jr. at Baton Rouge.
Wallace Pursell (b. 1929) is a co-founder of the Baton Rouge Astronomical Society and a lifelong amateur astronomer. He is an Eagle Scout and earned his BA in Geology from Ohio Wesleyan University.
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 2013-07-22Last Updated: 2014-08-13

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Alternate Designations
 1999 EX4 = 2002 RU60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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