+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102458 (1999 TH225) Classification: Main-belt Asteroid          SPK-ID: 2102458 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07511092878480634 4.3844e-08   a 3.088595689799086 2.8332e-08 au q 2.856608398897527 1.3665e-07 au i 9.23484364515301 6.876e-06 deg node 352.2565815902777 2.8966e-05 deg peri 105.9356294476725 5.7533e-05 deg M 236.7911875933344 5.2763e-05 deg tp 2459879.045991348133 (2022-Oct-26.54599135) 0.00029471 TDB period 1982.622444887007 5.43 2.728e-05 7.469e-08 d yr n .1815776881414842 2.4984e-09 deg/d Q 3.320582980700645 3.046e-08 au   Orbit Determination Parameters    # obs. used (total)      489      data-arc span      7654 days (20.96 yr)      first obs. used      1999-10-02      last obs. used      2020-09-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56303      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:42:05   Additional Information  Earth MOID = 1.89089 au   Jupiter MOID = 1.80134 au   T_jup = 3.201  [ 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 14.96   n/a E2021B55   102458 (1999 TH225)          Discovered 1999-Oct-02 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ 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 1950-Jul-07 19:58 00:03 Jupiter 1.8159171792179 1.81591655192575 1.81591780651017 3.66233263303669 3.53267513286653 2433470.331862673 2.54415406801518 105.584073085723 24.3248779649052 85.1967886156826 1708848.17127453 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2010-May-13 20:48 < 00:01 Jupiter 1.83016561750692 1.83016493427391 1.83016630073984 3.90399168230885 3.78358654761985 2455330.366822875 0.285808820847457 96.0764402424924 29.8678440416901 87.5934795566515 2149018.27980067 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2020-Mar-21 13:53 < 00:01 Jupiter 1.98448526323743 1.98448466221024 1.98448586426474 2.92450703120514 2.77472464025275 2458930.078759695 0.344097187052198 61.6244526030922 16.0642393645046 71.8517472691419 2603656.65180591 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2070-Mar-20 04:56 00:02 Jupiter 1.89605028912033 1.8960495677214 1.89605101051958 4.05956958551878 3.9479925602882 2477190.705738161 2.16116619368387 131.412320818432 30.8245853127583 84.5396401434252 2360278.6133931 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2080-Feb-08 00:03 00:03 Jupiter 1.88930304918338 1.88930199704768 1.88930410131982 3.19117543463962 3.04744973555968 2480802.502345996 2.63078832989317 97.2079741119295 30.5044879805263 60.3190390638714 2217031.30799449 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2130-Jan-27 18:13 00:05 Jupiter 1.99880316337935 1.99880147263728 1.99880485412267 4.1667866202609 4.06381360920642 2499053.258820759 4.52317046208327 130.923828115445 48.1878108186843 57.1890831321218 2304268.17470931 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2139-Dec-22 18:22 00:05 Jupiter 1.81935494055906 1.81935380807021 1.81935607304873 3.49114867414119 3.35514456916917 2502669.265456187 4.91148488939752 112.695321497581 44.5097133074295 65.3202699727558 2145451.56436021 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 2199-Oct-31 00:39 00:07 Jupiter 1.79691442428882 1.79691382229857 1.79691502627918 3.72259134566605 3.59373540056921 2524531.527371043 7.17665026550219 261.979049810262 26.8127603190596 -89.5841644354252 1851552.20710274 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:06 2021-Apr-13 15:42 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 00:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin