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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .320398111591463 3.8513e-08  
a 2.593437389729545 1.0539e-08 au
q 1.762504947529506 1.0488e-07 au
i 6.496286574155205 3.7933e-06 deg
node 58.13304716445694 3.2962e-05 deg
peri .01261494546306341 3.3602e-05 deg
M 283.6091938575954 6.5618e-06 deg
tp 2458924.205941592853
(2020-Mar-15.70594159)
2.9084e-05 TDB
period 1525.49953139896
4.18
9.2988e-06
2.546e-08
d
yr
n .2359882730805311 1.4385e-09 deg/d
Q 3.424369831929584 1.3916e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      18312 days (50.14 yr)  
   first obs. used      1969-10-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4726  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:14:38  

Additional Information
 Earth MOID = .774443 au 
 Jupiter MOID = 1.94366 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456817.5 (2014-Jun-09.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3179082848294107 3.8222e-08  
q 1.770897897533066 1.0399e-07 au
tp 2457393.365204934499
(2016-Jan-05.86520493)
2.4773e-05 TDB
node 58.22373121150076 3.3037e-05 deg
peri 359.4206905610365 3.3704e-05 deg
i 6.487985389782885 3.7912e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      18312 days (50.14 yr)  
   first obs. used      1969-10-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4726  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:14:38  

Additional Information
 Jupiter MOID = 1.94366 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.460891835837789E-15 -3.969631266094327E-15 -4.653257424244337E-13 1.141893029247902E-14 -9.785707972360316E-14 -4.432033670811002E-15
q -3.969631266094327E-15 1.081461240666806E-14 1.284874007547207E-12 -3.052223172010665E-14 2.682261331428779E-13 1.229826928102512E-14
tp -4.653257424244337E-13 1.284874007547207E-12 6.137014051807987E-10 -3.258041106224564E-12 1.761274868126843E-10 2.610311073507973E-12
node 1.141893029247902E-14 -3.052223172010665E-14 -3.258041106224564E-12 1.091472978933379E-9 -1.084950008047219E-9 -4.803979838115715E-11
peri -9.785707972360316E-14 2.682261331428779E-13 1.761274868126843E-10 -1.084950008047219E-9 1.13596495087594E-9 4.830893389341502E-11
i -4.432033670811002E-15 1.229826928102512E-14 2.610311073507973E-12 -4.803979838115715E-11 4.830893389341502E-11 1.437299902788006E-11

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 13.6   n/a MPO449010  

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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