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20828 Linchen (2000 UO27)
Classification: Main-belt Asteroid          SPK-ID: 2020828
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189679494638795 3.0131e-08  
a 2.395699898165041 9.0126e-09 au
q 2.110688393749522 7.1648e-08 au
i 6.64227413665965 3.9463e-06 deg
node 135.4206555230278 2.7126e-05 deg
peri 144.4348520399219 3.1718e-05 deg
M 226.7692151822204 1.6538e-05 deg
tp 2459501.743938651586
(2021-Oct-14.24393865)		 6.317e-05 TDB
period 1354.400322428261
3.71		 7.6429e-06
2.093e-08		 d
yr
n .265800291124095 1.4999e-09 deg/d
Q 2.680711402580561 1.0085e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2124  
   data-arc span      10274 days (28.13 yr)  
   first obs. used      1992-09-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:38:59  

Additional Information
 Earth MOID = 1.09832 au 
 Jupiter MOID = 2.44947 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456792.5 (2014-May-15.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1197375560175901 3.0143e-08  
q 2.108722417648625 7.1738e-08 au
tp 2456793.572196134070
(2014-May-16.07219613)		 5.9086e-05 TDB
node 135.4691990599166 2.7113e-05 deg
peri 144.5201200883673 3.1659e-05 deg
i 6.643928111822165 3.9478e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2124  
   data-arc span      10274 days (28.13 yr)  
   first obs. used      1992-09-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:38:59  

Additional Information
 Jupiter MOID = 2.44947 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.086162635477568E-16 -2.149455978828084E-15 5.227773359117191E-13 -1.453147463038183E-15 1.461255626780382E-13 -3.017753575343761E-16
q -2.149455978828084E-15 5.146326029141248E-15 -1.197848848844568E-12 3.765253912135126E-15 -3.353212392099212E-13 9.67967592966915E-16
tp 5.227773359117191E-13 -1.197848848844568E-12 3.491197197771384E-9 -4.710673411649503E-12 9.739952615151475E-10 6.45288655267997E-13
node -1.453147463038183E-15 3.765253912135126E-15 -4.710673411649503E-12 7.351208391135174E-10 -7.310354191980203E-10 1.859645892017718E-11
peri 1.461255626780382E-13 -3.353212392099212E-13 9.739952615151475E-10 -7.310354191980203E-10 1.002294722825587E-9 -1.827158614288574E-11
i -3.017753575343761E-16 9.67967592966915E-16 6.45288655267997E-13 1.859645892017718E-11 -1.827158614288574E-11 1.558548682524163E-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 14.2   n/a MPO416929  
diameter diameter 3.691 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20828 Linchen           Discovered 2000 Oct. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Lin Chen (b. 1985) was awarded second place in the 2004 Intel International Science and Engineering Fair for his environmental science team project. He also received the Intel Foundation Achievement Award. He attends the Wusong High School, Shanghai, China.
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

[ show close-approach data ]
Alternate Designations
 2000 UO27 = 1998 BJ48 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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