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226083 (2002 LW21)
Classification: Main-belt Asteroid          SPK-ID: 2226083
[ 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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2484997028094188 5.2816e-08  
a 3.194093131089978 3.463e-08 au
q 2.400361937268512 1.7735e-07 au
i 26.83811927408206 8.2417e-06 deg
node 63.26778586856877 1.0873e-05 deg
peri 288.624464052539 1.8749e-05 deg
M 15.78876935087112 1.3616e-05 deg
tp 2459109.053819903086
(2020-Sep-16.55381990)		 7.8998e-05 TDB
period 2085.065916367479
5.71		 3.3909e-05
9.284e-08		 d
yr
n .172656412046281 2.8079e-09 deg/d
Q 3.987824324911443 4.3236e-08 au
   Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      8057 days (22.06 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51061  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:08:04  

Additional Information
 Earth MOID = 1.53481 au 
 Jupiter MOID = 1.96471 au 
 T_jup = 2.983 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457904.5 (2017-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2522752314315589 5.3234e-08  
q 2.38447840555344 1.7944e-07 au
tp 2457028.204973198331
(2015-Jan-05.70497320)		 8.8609e-05 TDB
node 63.32118847556008 1.0876e-05 deg
peri 288.9958877981766 1.8605e-05 deg
i 26.86635435325931 8.2504e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      8057 days (22.06 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51061  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:08:04  

Additional Information
 Jupiter MOID = 1.96471 au 
 T_jup = 2.983 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.833814429093059E-15 -9.459705422610878E-15 2.210715311761497E-12 2.248319892714893E-15 4.310312431468941E-13 -3.951023227775505E-15
q -9.459705422610878E-15 3.219799419085932E-14 -8.222961489183969E-12 -1.025884588322078E-14 -1.526942703767672E-12 1.427611790278661E-14
tp 2.210715311761497E-12 -8.222961489183969E-12 7.851593557376908E-9 7.344202798185137E-12 1.340360945695238E-9 -3.98017928498787E-12
node 2.248319892714893E-15 -1.025884588322078E-14 7.344202798185137E-12 1.182954365713874E-10 -1.038798852663861E-10 -1.68226864493059E-11
peri 4.310312431468941E-13 -1.526942703767672E-12 1.340360945695238E-9 -1.038798852663861E-10 3.461502882939309E-10 1.418171096635564E-11
i -3.951023227775505E-15 1.427611790278661E-14 -3.98017928498787E-12 -1.68226864493059E-11 1.418171096635564E-11 6.80693399901821E-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 14.52   n/a E2021B55  
diameter diameter 7.977 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226083 (2002 LW21)          Discovered 2002-Jun-08 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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