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19801 Karenlemmon (2000 RZ64)
Classification: Main-belt Asteroid          SPK-ID: 2019801
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07471293689733462 3.1558e-08  
a 2.869086260976806 1.4434e-08 au
q 2.654728400207437 8.9633e-08 au
i 1.419294816404857 3.887e-06 deg
node 211.5678434331049 0.00013468 deg
peri 113.359021610967 0.0001373 deg
M 92.4382902134993 2.6587e-05 deg
tp 2458744.711630724727
(2019-Sep-18.21163072)
0.00013103 TDB
period 1775.063261773056
4.86
1.3395e-05
3.667e-08
d
yr
n .2028096731833698 1.5305e-09 deg/d
Q 3.083444121746176 1.5512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1465  
   data-arc span      14346 days (39.28 yr)  
   first obs. used      1981-10-30  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49238  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:07:21  

Additional Information
 Earth MOID = 1.64106 au 
 Jupiter MOID = 2.14862 au 
 T_jup = 3.294 
[ 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 14.54   n/a MPCxxxxx  
diameter diameter 4.125 km 1.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19801 Karenlemmon           Discovered 2000 Sept. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Karen Lemmon mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, a middle school science competition. She teaches at the St. Olafs Catholic School, Bountiful, Utah.
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 RZ64 = 1981 UC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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