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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346149142924265 5.3499e-08  
a 2.206858843854542 1.527e-08 AU
q 1.90978272973358 1.1988e-07 AU
i 5.526782222365782 7.3994e-06 deg
node 268.4096946305478 7.0274e-05 deg
peri 129.9348491184584 7.7993e-05 deg
M 40.06345458429635 3.4627e-05 deg
tp 2456867.238052990086
(2014-Jul-28.73805299)
0.00011476 JED
period 1197.457918228883
3.28
1.2428e-05
3.403e-08
d
yr
n .3006368695882551 3.1202e-09 deg/d
Q 2.503934957975505 1.7325e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      752  
   data-arc span      12123 days (33.19 yr)  
   first obs. used      1981-10-22  
   last obs. used      2014-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53737  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:23:12  

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 14.4 mag n/a MPO319467  

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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