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9851 Sakamoto (1990 UG3)
Classification: Main-belt Asteroid          SPK-ID: 2009851
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3206704296529156 1.2414e-08  
a 2.593688059855563 7.2924e-09 au
q 1.761968995316042 3.3493e-08 au
i 6.495840751268451 8.7222e-07 deg
node 58.12591679638866 3.8969e-06 deg
peri .02467287602987588 8.0082e-06 deg
M 65.19399606307306 3.8118e-06 deg
tp 2458924.200472557528
(2020-Mar-15.70047256)
1.553e-05 TDB
period 1525.720708745294
4.18
6.4346e-06
1.762e-08
d
yr
n .2359540628481427 9.9512e-10 deg/d
Q 3.425407124395084 9.6309e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2107  
   data-arc span      18794 days (51.46 yr)  
   first obs. used      1969-10-09  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:24:50  

Additional Information
 Earth MOID = .773571 au 
 Jupiter MOID = 1.94467 au 
 T_jup = 3.335 
[ 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 13.72   n/a MPCxxxxx  

9851 Sakamoto           Discovered 1990 Oct. 24 by K. Endate and K. Watanabe at Kitami.
Makoto Sakamoto (b. 1967) is a research fellow of the Nishi-Harima Astronomical Observatory. He worked previously as an engineer at a telescope manufacturing firm from 1993 to 1995. He was also well known as a youthful astronomy educator during his days as a university student.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1990 UG3 = 1969 TO3 = 1983 CP = 1986 XG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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