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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352430720370593 5.2254e-08  
a 2.2068411526963 1.441e-08 au
q 1.908381175707847 1.1612e-07 au
i 5.524779534123293 7.3614e-06 deg
node 268.3561199741165 6.6784e-05 deg
peri 130.0344484815131 7.4589e-05 deg
M 160.2010752102912 3.3273e-05 deg
tp 2456867.634057544696
(2014-Jul-29.13405754)
0.00010946 JED
period 1197.44351922793
3.28
1.1728e-05
3.211e-08
d
yr
n .3006404846819962 2.9446e-09 deg/d
Q 2.505301129684753 1.6359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      12250 days (33.54 yr)  
   first obs. used      1981-10-22  
   last obs. used      2015-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51269  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:03:51  

Additional Information
 Earth MOID = .920546 au 
 Jupiter MOID = 2.88599 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 14.5 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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