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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346149350491412 5.8004e-08  
a 2.206858833634427 1.8878e-08 AU
q 1.909782675082105 1.3364e-07 AU
i 5.526782036582615 7.4419e-06 deg
node 268.4097043692789 7.6445e-05 deg
peri 129.9348335334743 8.4595e-05 deg
M 40.06346516232172 4.0327e-05 deg
tp 2456867.238018730415
(2014-Jul-28.73801873)
0.00013326 JED
period 1197.457909910617
3.28
1.5365e-05
4.207e-08
d
yr
n .3006368716766601 3.8576e-09 deg/d
Q 2.503934992186749 2.1419e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      12050 days (32.99 yr)  
   first obs. used      1981-10-22  
   last obs. used      2014-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5529  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:58:15  

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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