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12365 Yoshitoki (1993 YD)
Classification: Main-belt Asteroid          SPK-ID: 2012365
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03197161712033157 4.4885e-08  
a 3.176140646480321 2.2609e-08 au
q 3.07459429381073 1.4753e-07 au
i 14.82574503942198 4.3828e-06 deg
node 100.0609033072476 1.8504e-05 deg
peri 76.97507219730727 7.2568e-05 deg
M 91.90915962542522 7.0345e-05 deg
tp 2458072.657555130004
(2017-Nov-15.15755513)
0.00040347 TDB
period 2067.511888125584
5.66
2.2076e-05
6.044e-08
d
yr
n .174122336160484 1.8592e-09 deg/d
Q 3.277686999149912 2.3332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1561  
   data-arc span      9391 days (25.71 yr)  
   first obs. used      1993-12-17  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:12:01  

Additional Information
 Earth MOID = 2.12446 au 
 Jupiter MOID = 1.89476 au 
 T_jup = 3.148 
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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 12.9   n/a MPO452344  
diameter diameter 27.53 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0194   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

12365 Yoshitoki           Discovered 1993 Dec. 17 by T. Kobayashi at Oizumi.
Takahashi Yoshitoki (1764-1804) was chief of the Edo National Astronomical Observatory at Edo, Japan, from 1795 to 1804. He mainly studied positional astronomy, devising a new calendar computation method, "Kansei reki", with Hazama Shigetomi.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

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