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13569 Oshu (1993 EJ)
Classification: Main-belt Asteroid          SPK-ID: 2013569
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07844964163092318 3.6536e-08  
a 2.414975035525088 9.2545e-09 au
q 2.225521109440519 8.5699e-08 au
i 7.04934969884119 3.7334e-06 deg
node 49.36599885995309 3.2514e-05 deg
peri 162.9463346083577 4.1415e-05 deg
M 116.886717822823 2.6862e-05 deg
tp 2458755.428220096635
(2019-Sep-28.92822010)
0.00010184 TDB
period 1370.778851093089
3.75
7.8795e-06
2.157e-08
d
yr
n .2626244194772396 1.5096e-09 deg/d
Q 2.604428961609657 9.9805e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1365  
   data-arc span      10587 days (28.99 yr)  
   first obs. used      1991-11-12  
   last obs. used      2020-11-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53051  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:01:59  

Additional Information
 Earth MOID = 1.21865 au 
 Jupiter MOID = 2.35832 au 
 T_jup = 3.503 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.87   n/a E2021B10  

13569 Oshu           Discovered 1993 Mar. 4 by T. Seki at Geisei.
Oshu City is situated in the southern inland region of Iwate prefecture. It was formed on 2006 Feb. 20 as an amalgamation of five Japanese cities and towns. The Mizusawa Astrogeodynamics Observatory is located in the new city.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1993 EJ = 1997 JV12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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