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20818 Karmadiraju (2000 TQ54)
Classification: Main-belt Asteroid          SPK-ID: 2020818
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08041585596293274 4.8416e-08  
a 3.125726232463229 1.8883e-08 au
q 2.874368281973906 1.5339e-07 au
i 1.469705962837892 5.0251e-06 deg
node 48.84112859261466 0.00015861 deg
peri 171.7548163087869 0.00016117 deg
M 45.78518057285863 2.6427e-05 deg
tp 2458943.787353603879
(2020-Apr-04.28735360)		 0.0001491 TDB
period 2018.481778302475
5.53		 1.8291e-05
5.008e-08		 d
yr
n .1783518701381376 1.6162e-09 deg/d
Q 3.377084182952553 2.0402e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      10336 days (28.30 yr)  
   first obs. used      1992-04-03  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:32:07  

Additional Information
 Earth MOID = 1.86497 au 
 Jupiter MOID = 1.59232 au 
 T_jup = 3.209 
[ 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 14.34   n/a E2021B10  
diameter diameter 7.645 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20818 Karmadiraju           Discovered 2000 Oct. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kartik Madiraju (b. 1989) was awarded second place in the 2004 Intel International Science and Engineering Fair for his environmental science project. He attends the Centennial Regional High School, Greenfield Park, Quebec, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

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Alternate Designations
 2000 TQ54 = 1992 GF1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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