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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354456063532126 5.1547e-08  
a 2.206465859083914 1.3456e-08 au
q 1.907609752902631 1.142e-07 au
i 5.52548109083784 7.0967e-06 deg
node 268.347749255031 6.3639e-05 deg
peri 130.0200090848686 7.0714e-05 deg
M 220.3696302262684 3.1587e-05 deg
tp 2458064.824534651318
(2017-Nov-07.32453465)
0.00010646 JED
period 1197.138077807494
3.28
1.0951e-05
2.998e-08
d
yr
n .3007171910021643 2.7509e-09 deg/d
Q 2.505321965265197 1.5279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      12591 days (34.47 yr)  
   first obs. used      1981-10-22  
   last obs. used      2016-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50126  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:57:23  

Additional Information
 Earth MOID = .91963 au 
 Jupiter MOID = 2.88465 au 
 T_jup = 3.643 
[ 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 14.5 mag n/a MPO337517  

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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