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31098 Frankhill (1997 LQ2)
Classification: Mars-crossing Asteroid          SPK-ID: 2031098
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2831801700054797 6.3418e-08  
a 2.292732569241148 1.557e-08 AU
q 1.643476170506339 1.4422e-07 AU
i 22.5207431629526 1.0825e-05 deg
node 249.13805161361 2.0192e-05 deg
peri 89.68658224428556 2.8681e-05 deg
M 318.1864485067856 2.0857e-05 deg
tp 2457147.779765216223
(2015-May-05.27976522)
7.4085e-05 JED
period 1268.027076973951
3.47
1.2916e-05
3.536e-08
d
yr
n .2839056093810807 2.8919e-09 deg/d
Q 2.941988967975956 1.9979e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      5773 days (15.81 yr)  
   first obs. used      1997-06-09  
   last obs. used      2013-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54504  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:45:47  

Additional Information
 Earth MOID = .807336 AU 
 T_jup = 3.446 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO259552  

31098 Frankhill           Discovered 1997 June 9 by R. Tucker at Goodricke-Pigott Observatory.
Frank Hill (b. 1951) is a U.S. astronomer, inventor of a method for probing beneath the solar surface, an expert on selection of observatory sites, and Data Scientist for the worldwide GONG network of helioseismic telescopes and the National Solar Observatory digital data archive.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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