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18419 (1993 TS20)
Classification: Main-belt Asteroid          SPK-ID: 2018419
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124558514775229 3.0612e-08  
a 2.284495983621075 7.2373e-09 au
q 2.027591042585986 6.9096e-08 au
i 2.237541370489949 3.7451e-06 deg
node 146.9163823575664 8.7712e-05 deg
peri 118.9068676255181 8.9446e-05 deg
M 55.94353309328806 1.9621e-05 deg
tp 2459004.511127262558
(2020-Jun-04.01112726)
6.8363e-05 TDB
period 1261.200183188723
3.45
5.9932e-06
1.641e-08
d
yr
n .2854423943150748 1.3564e-09 deg/d
Q 2.541400924656165 8.0512e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1801  
   data-arc span      10478 days (28.69 yr)  
   first obs. used      1992-04-05  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:28:51  

Additional Information
 Earth MOID = 1.01109 au 
 Jupiter MOID = 2.51615 au 
 T_jup = 3.593 
[ 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 14.84   n/a E2021B10  
diameter diameter 6.203 km 0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18419 (1993 TS20)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 TS20 = 1992 GR6 = 1992 GS = 1996 PL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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