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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120863919186545 3.7702e-08  
a 2.758911627725912 1.2189e-08 au
q 2.425458755709628 1.0241e-07 au
i 1.567962378591732 3.8884e-06 deg
node 289.6139450920722 0.00015035 deg
peri 211.7855143793371 0.00015118 deg
M 214.4469238123209 1.7189e-05 deg
tp 2459677.243353163573
(2022-Apr-07.74335316)
8.1676e-05 TDB
period 1673.805964944004
4.58
1.1092e-05
3.037e-08
d
yr
n .2150786934326904 1.4253e-09 deg/d
Q 3.092364499742196 1.3662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1748  
   data-arc span      11619 days (31.81 yr)  
   first obs. used      1988-10-07  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:55:17  

Additional Information
 Earth MOID = 1.43851 au 
 Jupiter MOID = 1.92679 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 13.8   n/a MPO435775  
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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