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7955 Ogiwara (1993 WE)
Classification: Main-belt Asteroid          SPK-ID: 2007955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210014588954592 3.4034e-08  
a 2.758854919243889 1.0823e-08 au
q 2.425029449134465 9.4298e-08 au
i 1.567977076209684 3.2105e-06 deg
node 289.6144460941081 0.00014954 deg
peri 211.7517990201189 0.00015034 deg
M 257.5150456805029 1.7264e-05 deg
tp 2459676.985108243373
(2022-Apr-07.48510824)
8.1538e-05 TDB
period 1673.754358448117
4.58
9.8496e-06
2.697e-08
d
yr
n .215085324906211 1.2657e-09 deg/d
Q 3.092680389353315 1.2133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2083  
   data-arc span      11839 days (32.41 yr)  
   first obs. used      1988-10-07  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51378  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:11:15  

Additional Information
 Earth MOID = 1.43797 au 
 Jupiter MOID = 1.92583 au 
 T_jup = 3.331 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.89   n/a E2021B10  
diameter diameter 5.979 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.164   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7955 Ogiwara           Discovered 1993 Nov. 18 by T. Urata at the Nihondaira Observatory.
Tetsuo Ogiwara (b. 1950) is a Japanese amateur astronomer who since 1972 calculated circular and elliptical orbits of about 100 minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1993 WE = 1990 CN = 1995 GL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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