Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3205873459265306 3.8425e-08  
a 2.593614969859854 1.0463e-08 au
q 1.762134830317165 1.0472e-07 au
i 6.49601784069268 3.7695e-06 deg
node 58.13114190857882 3.2712e-05 deg
peri .0314185829236518 3.3362e-05 deg
M 18.00135016582057 6.8876e-06 deg
tp 2458924.211467231281
(2020-Mar-15.71146723)
2.8878e-05 TDB
period 1525.656217103359
4.18
9.2318e-06
2.528e-08
d
yr
n .2359640369594554 1.4278e-09 deg/d
Q 3.425095109402543 1.3817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1810  
   data-arc span      18378 days (50.32 yr)  
   first obs. used      1969-10-09  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:29:15  

Additional Information
 Earth MOID = .774446 au 
 Jupiter MOID = 1.94404 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456924.5 (2014-Sep-24.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3178460892842904 3.815e-08  
q 1.771098437590275 1.0382e-07 au
tp 2457393.416114357161
(2016-Jan-05.91611436)
2.4687e-05 TDB
node 58.22136973942612 3.2786e-05 deg
peri 359.4242746474437 3.3466e-05 deg
i 6.487566943937931 3.7677e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1810  
   data-arc span      18378 days (50.32 yr)  
   first obs. used      1969-10-09  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:29:15  

Additional Information
 Jupiter MOID = 1.94404 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.455399227073828E-15 -3.955887442710351E-15 -4.652495043229957E-13 1.314573547968032E-14 -9.907302870219095E-14 -4.281438810193867E-15
q -3.955887442710351E-15 1.077937004196311E-14 1.282541187271455E-12 -3.536745667954559E-14 2.714585838004117E-13 1.186549219540577E-14
tp -4.652495043229957E-13 1.282541187271455E-12 6.094278180107681E-10 -4.37379988330704E-12 1.767142493511884E-10 2.48249944996652E-12
node 1.314573547968032E-14 -3.536745667954559E-14 -4.37379988330704E-12 1.074904382124227E-9 -1.068737038585854E-9 -4.946073080306148E-11
peri -9.907302870219095E-14 2.714585838004117E-13 1.767142493511884E-10 -1.068737038585854E-9 1.119977350027763E-9 4.969463558998082E-11
i -4.281438810193867E-15 1.186549219540577E-14 2.48249944996652E-12 -4.946073080306148E-11 4.969463558998082E-11 1.419524479152227E-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 13.7   n/a MPO502243  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-11 13:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin