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31105 Oguniyamagata (1997 OW2)
Classification: Main-belt Asteroid          SPK-ID: 2031105
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346149345306661 5.8237e-08  
a 2.20685883386549 1.9068e-08 AU
q 1.909782676426265 1.3435e-07 AU
i 5.526781991088273 7.452e-06 deg
node 268.4097034782981 7.6764e-05 deg
peri 129.934834758813 8.4921e-05 deg
M 40.06346468594832 4.0671e-05 deg
tp 2456867.238020294033
(2014-Jul-28.73802029)
0.00013438 JED
period 1197.457910098682
3.28
1.552e-05
4.249e-08
d
yr
n .3006368716294441 3.8965e-09 deg/d
Q 2.503934991304715 2.1635e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      11190 days (30.64 yr)  
   first obs. used      1981-10-22  
   last obs. used      2012-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55391  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:45:53  

Additional Information
 Earth MOID = .922981 AU 
 T_jup = 3.642 
[ 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 14.3 mag n/a MPO244457  

31105 Oguniyamagata           Discovered 1997 July 27 by T. Okuni at Nanyo.
Oguni town, situated in the southwestern part of Yamagata prefecture Japan, has a population of 8900 and is surrounded by the Asahi and Iide mountain ranges of the Bandai-Asahi National Park.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1997 OW2 = 1981 UF12 = 1989 EG3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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