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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345740324806065 6.1772e-08  
a 2.206709592040256 1.9711e-08 AU
q 1.909743783725765 1.4192e-07 AU
i 5.526926630042034 7.4219e-06 deg
node 268.4095382557371 7.8522e-05 deg
peri 129.892173645338 8.6267e-05 deg
M 339.9668729612999 3.955e-05 deg
tp 2456867.128869617230
(2014-Jul-28.62886962)
0.000132 JED
period 1197.336442576625
3.28
1.6042e-05
4.392e-08
d
yr
n .3006673706726013 4.0284e-09 deg/d
Q 2.503675400354747 2.2363e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      719  
   data-arc span      8502 days (23.28 yr)  
   first obs. used      1989-03-02  
   last obs. used      2012-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58653  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 22:51:01  

Additional Information
 Earth MOID = .921986 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 14.3 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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