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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457198.5 (2015-Jun-25.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07747669049306026 3.1511e-08  
q 2.646406746253781 8.985e-08 au
tp 2456970.798752427477
(2014-Nov-09.29875243)
0.00012669 TDB
node 211.5964404381503 0.00013477 deg
peri 113.6031618760463 0.0001372 deg
i 1.417503549602597 3.8898e-06 deg
  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
 Jupiter MOID = 2.14862 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.929116811786281E-16 -2.800236969542072E-15 8.959885688103041E-14 4.09830684537939E-16 -1.496319650244692E-14 -1.51647045266301E-16
q -2.800236969542072E-15 8.072960877389239E-15 -4.244567651525468E-13 5.003098251972404E-16 9.571443719606449E-15 5.07044138817189E-16
tp 8.959885688103041E-14 -4.244567651525468E-13 1.605069163723828E-8 1.941172828070014E-11 3.266128694872772E-9 -2.232708659016109E-13
node 4.09830684537939E-16 5.003098251972404E-16 1.941172828070014E-11 1.816335223901238E-8 -1.815349856930188E-8 5.006916613803333E-11
peri -1.496319650244692E-14 9.571443719606449E-15 3.266128694872772E-9 -1.815349856930188E-8 1.882403044353374E-8 -5.009398213986017E-11
i -1.51647045266301E-16 5.07044138817189E-16 -2.232708659016109E-13 5.006916613803333E-11 -5.009398213986017E-11 1.513079387560766E-11

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2009-Apr-27 22:33 00:01 Iris 0.0392310887929819 0.0392294958043766 0.039232681810959 3.13008216061402 3.13008211379881 2454949.439559169 1.11555719373193 108.038594397485 54.2627014091218 -51.6802136174558 91214.4868922243 T 33 CATAB v2.0f-lin.ifort 2021-Apr-13 03:07:25 2021-Apr-13 03:07
2031-Oct-07 07:54 00:01 Psych 0.0458048753731953 0.0458025910585342 0.0458071599501688 2.14661880300652 2.14661867995513 2463146.829222878 1.05209581489991 235.249869657119 62.1382203998935 65.1853907286308 100523.941019895 T 33 CATAB v2.0f-lin.ifort 2021-Apr-13 03:07:25 2021-Apr-13 03:07

Alternate Designations
 2000 RZ64 = 1981 UC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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