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18238 Frankshu (1241 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018238
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09027501906831124 5.7903e-08  
a 3.058095241190673 3.5208e-08 AU
q 2.782025634979473 1.8432e-07 AU
i 8.783302997427249 8.586e-06 deg
node 4.614630564325193 4.0447e-05 deg
peri 286.6560776345205 6.7029e-05 deg
M 274.8352795890665 5.6735e-05 deg
tp 2457262.595949265886
(2015-Aug-28.09594927)
0.0003099 JED
period 1953.326928486719
5.35
3.3733e-05
9.236e-08
d
yr
n .1843009456071437 3.1828e-09 deg/d
Q 3.334164847401873 3.8386e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      14864 days (40.70 yr)  
   first obs. used      1973-09-19  
   last obs. used      2014-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64203  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:02:58  

Additional Information
 Earth MOID = 1.78214 AU 
 T_jup = 3.211 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a PDS3 (MPO 4284)  

18238 Frankshu           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Frank Shu (b. 1943), president of National Tsinghua University in Taiwan and former professor at the University of California in Berkeley, is well known for his fundamental contributions to the theory of star formation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Alternate Designations
 1241 T-2 = 1998 FP142 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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