+ View the NASA Portal + Center for Near-Earth Object Studies 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3205873528757225 3.8019e-08   a 2.593614968128643 1.0354e-08 au q 1.76213481111743 1.0358e-07 au i 6.496017746282279 3.7587e-06 deg node 58.13114200382513 3.2664e-05 deg peri .03141847809940396 3.3315e-05 deg M 18.00135090040188 6.8485e-06 deg tp 2458924.211464194557 (2020-Mar-15.71146419) 2.8718e-05 TDB period 1525.65621557582 4.18 9.1356e-06 2.501e-08 d yr n .2359640371957107 1.4129e-09 deg/d Q 3.425095125139856 1.3673e-08 au   Orbit Determination Parameters    # obs. used (total)      1861      data-arc span      18650 days (51.06 yr)      first obs. used      1969-10-09      last obs. used      2020-10-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46295      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:10:38   Additional Information  Earth MOID = .774446 au   Jupiter MOID = 1.94404 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 13.7   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.arc Last Updated: 2003-10-02 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1959-Sep-24 11:03 < 00:01 Jupiter 1.94091497782983 1.94091473768094 1.94091521798181 1.36494660899825 0.995124015466045 2436835.960573217 0.863954758876348 203.771489411202 175.346702556775 37.659278098581 1705091.01118078 T 25 CATAB v2.0f-lin.ifort 2020-Nov-13 03:10:43 2020-Nov-13 03:10 2030-Sep-28 09:18 < 00:01 Jupiter 1.93993468026898 1.93993442610289 1.93993493444223 1.37038670557398 1.00235284810553 2462772.887703899 0.292428065483779 257.387843903944 190.700492712392 84.8847039963869 1696878.25238413 T 25 CATAB v2.0f-lin.ifort 2020-Nov-13 03:10:43 2020-Nov-13 03:10 2101-Oct-04 00:40 00:01 Jupiter 1.95557667368192 1.95557640643077 1.95557694093374 1.39366550886228 1.0373234200952 2488710.527852961 1.34008860687419 289.470239909727 168.408800357425 80.8272702932893 1756735.64200799 T 25 CATAB v2.0f-lin.ifort 2020-Nov-13 03:10:43 2020-Nov-13 03:10 2172-Oct-08 23:10 00:02 Jupiter 1.98305428797998 1.98305361265935 1.98305496330039 1.43277694385634 1.09480099948191 2514648.465176814 2.34881883236332 251.20165481438 136.970910583023 74.8524834250749 1653300.08666622 T 25 CATAB v2.0f-lin.ifort 2020-Nov-13 03:10:43 2020-Nov-13 03:10 Alternate Designations  1990 UG3 = 1969 TO3 = 1983 CP = 1986 XG3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-29 14:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin