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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2829943048348263 5.6052e-08  
a 2.29251143283616 1.3193e-08 au
q 1.6437437535748 1.2381e-07 au
i 22.52026035951354 1.0474e-05 deg
node 249.1312257844045 1.4855e-05 deg
peri 89.66719432251479 2.4894e-05 deg
M 128.5782130181335 1.8949e-05 deg
tp 2457147.674811035217
(2015-May-05.17481104)
6.5639e-05 JED
period 1267.843627631779
3.47
1.0944e-05
2.996e-08
d
yr
n .2839466888140207 2.451e-09 deg/d
Q 2.941279112097521 1.6926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      6839 days (18.72 yr)  
   first obs. used      1997-06-09  
   last obs. used      2016-02-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52437  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 17:05:43  

Additional Information
 Earth MOID = .806582 au 
 Jupiter MOID = 2.77109 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 14.7 mag n/a MPO358919  

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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