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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1913579448128568 3.9294e-08  
a 3.130275507624329 1.9348e-08 au
q 2.531272419787316 1.2247e-07 au
i 21.17952444796101 6.1615e-06 deg
node 6.192000736414006 1.1402e-05 deg
peri 69.20267458423653 2.2612e-05 deg
M 59.46938068936301 1.6224e-05 deg
tp 2458866.333287106473
(2020-Jan-17.83328711)
9.096e-05 TDB
period 2022.890019152113
5.54
1.8755e-05
5.135e-08
d
yr
n .177963209364636 1.65e-09 deg/d
Q 3.729278595461343 2.3051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1999-03-10  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45583  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:14  

Additional Information
 Earth MOID = 1.62635 au 
 Jupiter MOID = 1.9891 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 13.98   n/a E2021B55  
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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