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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01105798305550323 4.022e-08  
a 3.080428624899328 2.0339e-08 au
q 3.046365297361504 1.1805e-07 au
i 5.989893904013032 4.8861e-06 deg
node 20.44520440099716 4.2397e-05 deg
peri 83.44161069787971 0.00023652 deg
M 186.8363043137095 0.00023328 deg
tp 2460150.381649531430
(2023-Jul-24.88164953)
0.0012816 TDB
period 1974.763777569271
5.41
1.9558e-05
5.355e-08
d
yr
n .1823002852741823 1.8055e-09 deg/d
Q 3.114491952437152 2.0564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      8560 days (23.44 yr)  
   first obs. used      1997-03-04  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:07:26  

Additional Information
 Earth MOID = 2.07047 au 
 Jupiter MOID = 1.8705 au 
 T_jup = 3.220 
[ 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 13.8   n/a MPO319332  
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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