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17889 Liechty (1999 DH3)
Classification: Main-belt Asteroid          SPK-ID: 2017889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057502647461556 3.1841e-08  
a 2.406618127908219 8.5592e-09 au
q 2.152117623739027 7.5442e-08 au
i 4.646187954826205 3.6495e-06 deg
node 161.05093550335 4.3504e-05 deg
peri 57.62812292752943 4.7047e-05 deg
M 141.9966703657086 1.8997e-05 deg
tp 2458062.620660950080
(2017-Nov-05.12066095)
7.0902e-05 TDB
period 1363.669736475266
3.73
7.2749e-06
1.992e-08
d
yr
n .263993539176507 1.4083e-09 deg/d
Q 2.661118632077411 9.4643e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1901  
   data-arc span      15393 days (42.14 yr)  
   first obs. used      1977-09-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52542  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:10:44  

Additional Information
 Earth MOID = 1.14923 au 
 Jupiter MOID = 2.31144 au 
 T_jup = 3.510 
[ 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 14.0   n/a MPO350945  
diameter diameter 3.488 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.458   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17889 Liechty           Discovered 1999 Feb. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Anthony David Liechty (b. 1984) was awarded third place in the 2003 Intel International Science and Engineering Fair for his engineering project. He attends the Leo Junior-Senior High School, Leo, Indiana, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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