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19810 Partridge (2000 SP112)
Classification: Main-belt Asteroid          SPK-ID: 2019810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0100908993241451 4.0532e-08  
a 3.082136901932608 2.1876e-08 au
q 3.051035368751974 1.1844e-07 au
i 5.994556840415482 4.8832e-06 deg
node 20.31061029018013 4.2302e-05 deg
peri 87.97753797210163 0.00025575 deg
M 218.0218576957905 0.00025273 deg
tp 2460175.962638704940
(2023-Aug-19.46263871)
0.0013887 TDB
period 1976.406687534598
5.41
2.1042e-05
5.761e-08
d
yr
n .1821487461414482 1.9393e-09 deg/d
Q 3.113238435113242 2.2097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      8889 days (24.34 yr)  
   first obs. used      1997-03-04  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:01:39  

Additional Information
 Earth MOID = 2.07552 au 
 Jupiter MOID = 1.86593 au 
 T_jup = 3.219 
[ 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 13.81   n/a MPCxxxxx  
diameter diameter 9.365 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19810 Partridge           Discovered 2000 Sept. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Mary Partridge mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, a middle school science competition. She teaches at the St. Joseph School, Athens, Georgia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031010/MPCPages.arcLast Updated: 2003-10-10

[ show close-approach data ]
Alternate Designations
 2000 SP112 = 1997 EC33 = 1998 HV153 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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