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20846 Liyulin (2000 US103)
Classification: Main-belt Asteroid          SPK-ID: 2020846
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073829353949517 4.2775e-08  
a 2.261967126165133 6.3169e-09 au
q 2.019070456390638 9.7863e-08 au
i 6.322364328465431 4.2129e-06 deg
node 14.67495834445509 2.5045e-05 deg
peri 324.3756038136129 2.9053e-05 deg
M 36.31555178623223 1.3398e-05 deg
tp 2459075.151827448026
(2020-Aug-13.65182745)
4.6417e-05 TDB
period 1242.590017200797
3.40
5.2052e-06
1.425e-08
d
yr
n .2897174410035724 1.2136e-09 deg/d
Q 2.504863795939628 6.9952e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1956  
   data-arc span      10557 days (28.90 yr)  
   first obs. used      1992-04-06  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:32:48  

Additional Information
 Earth MOID = 1.01282 au 
 Jupiter MOID = 2.83426 au 
 T_jup = 3.603 
[ 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 14.86   n/a E2021B10  
diameter diameter 3.613 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20846 Liyulin           Discovered 2000 Oct. 25 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Li Yu-Lin (b. 1986) was awarded second place in the 2004 Intel International Science and Engineering Fair for his mathematics team project. He attends the Dominic High School, Kaoshung, Taiwan.
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 US103 = 1992 GU7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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